The predicted value and residual for y is 9.4 and -0.4 respectively.
In statistics, a regression equation is used to determine whether or not there is a relationship between two sets of data. If you measure a child's height every year, you might discover that they grow about 3 inches per year. A regression equation can be used to model that trend (growing three inches per year). In fact, most things in the real world (from gas prices to hurricanes) can be modelled mathematically, allowing us to forecast future events.
Regression equations can assist you in determining whether your data can be fit to an equation. This is extremely useful if you want to make predictions based on your data, whether they are future predictions or indications of past behaviour.
Given,
Regression equation is y=11-038x
Observed value of y = 9
predicted value of y can be determined by substituting x=2 in the equation
y=11-0.8(2)=11-1.6=9.4
The residual can be calculated by formula,
residual = observed value - predicted value
residual = 9 - 9.4
residual = -0.4
Thus, the predicted value is 9.4 and residual is -0.4.
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Your question is incomplete, here is the complete question.
suppose the estimated regression equation is given by y=11-0.8x . what are the predicted value of y and the residual when x is 2 and y is observed to be 9?
A scale on a map shows that 2. 5 2. 52, point, 5 centimeters represents 15 1515 kilometers. What number of actual kilometers are represented by 17. 5 17. 517, point, 5 centimeters on the map?.
A map's scale reveals that 2. 5 2. 15.1515 kilometers are represented by 52, point, 5 centimeters, while 17 symbolizes 105 kilometers. 5 17. On the map, 517, point, 5 centimeters.
The ratio between a distance on a map and its corresponding distance on the ground is referred to as the "map scale." One kilometer on the ground is equal to one centimeter on a map with a scale of 1:100,000. There are three primary scale types found on maps: fractional scales, graphic scales, and written or verbal scales.
The link between the map's landscape and the one it shows is expressed using words in a written or verbal scale, for example, one inch equals one mile. To calculate distances and regions on a map, we can utilize the scale. Calculating distance is easy compared to converting scale types. Since we must square the integers, area computations are more difficult.
If d stands for the desired distance, then the percentage...
d/(17.5 cm) = (15 km)/ (2.5 cm)
can be applied to locate it.
Add 17.5 cm to the result to get...
d = (17.5/2.5)·(15 km) = 105 km
The exact distance is 105 kilometers.
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Correct Question:
A scale on a map having a reading which is 2. 5, 2.52, point, 5 centimeters represents 15.1515 kilometers. What number of actual kilometers are represented by 17. 5, 17.517, point, 5 centimeters on the map?
Calculate the median for the set of data in Q3.
Group of answer choices
6.5
4.5
3.5
5.5
2.5
Answer:
4.5.
Step-by-step explanation:
To find the median of a set of data, we need to first arrange the data in numerical order. Once the data is arranged in order, the median is the middle value in the set. In this case, the data arranged in numerical order is: 2.5, 3.5, 4.5, 5.5, 6.5. The median is the middle value, which is 4.5.
Need help please . Anyone
The linear equation [tex]\frac{17}{3} - \frac{3}{4}x = \frac{1}{2}x + 5[/tex] has been solved
Value of x is [tex]\frac{8}{15}[/tex]
What is linear equation?
Equation shows the equality between two algebraic expressions by connecting the two algebraic expressions by an equal to sign
A one degree equation is known as linear equation.
The linear equation is [tex]\frac{17}{3} - \frac{3}{4}x = \frac{1}{2}x + 5[/tex]
Now,
[tex]\frac{17}{3} - \frac{3}{4}x = \frac{1}{2}x + 5[/tex] [ Given]
[tex]\frac{17}{3} - \frac{3}{4}x-\frac{17}{3} = \frac{1}{2}x + 5-\frac{17}{3}[/tex] [Subtraction property of equality]
[tex]- \frac{3}{4}x = \frac{1}{2}x -\frac{2}{3}[/tex] [Simplification]
[tex]- \frac{3}{4}x - \frac{1}{2}x = \frac{1}{2}x -\frac{2}{3} - \frac{1}{2}x[/tex] [Subtraction property of equality]
[tex]-\frac{5}{4}x = -\frac{2}{3}[/tex] [Simplification]
[tex]-\frac{5}{4}x. -\frac{4}{5}= -\frac{2}{3}.-\frac{4}{5}[/tex] [Division property of equality]
[tex]x = \frac{8}{15}[/tex] [Simplification]
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What are the ways to convert 13 inches into yards.
Answer:
So to convert from a value in inches to one in yards, we need to divide by 36. To convert a value in yards to inches, we need to multiply by 36.
Answer:
To convert 13 inches into yards, you can use the conversion factor that 1 yard is equal to 36 inches. Since there are 36 inches in 1 yard, to convert 13 inches into yards, you would simply need to divide 13 by 36. This would give you a result of 0.36 yards.
ABCDEF is a regular hexagon with side 1 cm.
What is the area of the square shown above with BD as a side? (approximate to the nearest integer
Considering the given figure the area of the square is calculated to be
1 squared centimeters units
How to find the area of the squareThe area of the square is calculated using the formula
= length * length
The regular hexagon have a side 1 cm, angles in a regular hexagon is also 60 at the vertex
dropping a perpendicular angle bisector to divide BD at point say m, a right triangle is formed
hypotenuse BC = 1
opposite = BM
adjacent = CM
sin 30 = BM / BC
BM = sin 30 * 1
BM = 0.5 cm
side of the square BD = BM + DM = 0.5 + 0.5 = 1 cm
Area of the square
= 1 * 1
= 1 centimeter square
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Can an equation have 3 roots?
Yes, an equation can have three roots. An equation with three roots is known as a cubic equation expression.
An equation is represented by two expressions being separated by the equals sign ("="). The phrases on either side of the equals sign are referred to as the "left-hand side" and "right-hand side," respectively. The right side of an equation is frequently considered to be zero. An equation is an expression that contains an equal sign and can be solved to find the value of a variable. An equation can have one, two, three, or even more roots, which are the values of the variable that make the equation true. A cubic equation is an equation with three roots and can be written in the form ax^3 + bx^2 + cx + d = 0.
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Which equation would reflect the function over the Y-AXIS
f(x) = x + 1|-2
Og(x) = |-x-1|-2
g(x) = -x + 1|-2
g(x) = |-x-1| + 2
g(x) = -x + 1|-2
Answer:
g(x) = -x + 1|-2
Step-by-step explanation:
Negating the x-values flips everything over the y-axis. See attached for example
a student and professor both choose a number between 1 and 10, inclusive. what is the probability they choose the same number?
The probability they choose the same number is 0.1 or 1/10.
What is probability?
Mathematical descriptions of the likelihood that an event will occur or that a statement is true are referred to as probabilities. A number between zero and one represents the likelihood of an event, with 0 roughly denoting impossibility and 1 denoting certainty. It is more likely that an event will occur if its probability is higher. The flip of a fair (impartial) coin serves as a straightforward illustration. Given that the coin is fair, the outcomes "heads" and "tails" are equally likely; therefore, the likelihood of "heads" equals the possibility of "tails"; since no other outcomes seem to be possible, the likelihood of either "heads" as well as "tails" is 1/2 (also known as 0.5 or 50%).
Whichever number the professor picks doesn't matter. The only thing that matters is that the student matches the predetermined number.
That probability is one-tenth(1/10) for any given number.
Hence, the probability they choose the same number is 0.1 or 1/10.
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In a board game, players take turns spinning a wheel with 4 spaces and values of $20, $60, $80, and $120. The probability of landing on $20 is 4/9. The probability of landing on $60 is 2/9. The probability of landing on $80 is 2/9. The probability of landing on $120 is 1/9. What is the expected value of spinning the wheel once?
Answer:
The expected value of spinning the wheel once is $61.11.
Step-by-step explanation:
To calculate the expected value, we need to multiply the value of each outcome by its probability, and then add all of these products together. In this case, we have:
Expected value = ($20 * 4/9) + ($60 * 2/9) + ($80 * 2/9) + ($120 * 1/9)
Expected value = $71.11
Therefore, the expected value of spinning the wheel once is $61.11. This is the average value we would expect to get if we spun the wheel many times.
Answer: this would be 20$
Step-by-step explanation: Hope it helps, please mark brainliest!
The measures of the angles of the triangle are 32°, 53°, 95°. based on the side lengths, what are the measures of each angle? manglea = 95°, mangleb = 53°, manglec = 32° manglea = 32°, mangleb = 53°, manglec = 95° manglea = 43°, mangleb = 32°, manglec = 95° manglea = 53°, mangleb = 95°, manglec = 32°
The side that is opposite the 95-degree angle should be the longest, followed by the 53-degree angle and finally the 32-degree angle, which will be the shortest. The answer is (b).
How do you tell which angle is larger: The largest angle is located across from the longest side, just like with the sides. Theorem: If and only if angle A (= angle CAB) is greater than angle B (= angle ABC), then side BC of a triangle ABC will be longer than side CA. To put it another way, larger sides are in opposition to larger angles.
If you have an angle and its opposite side, you may calculate the hypotenuse by dividing the length of the opposing side by sin(). To find the length of the side next to the angle, you can also divide the length by tan(). Less than 90 degrees is the acute angle measurement. Right angles are 90 degrees in length. Angles that are obtuse are more than 90 degrees. Hint: There are two fundamental units used to measure angles from one of the two fundamental units, radians () or degrees ().
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Correct Question:
-2/9 = 4/m How do you solve by using mental math?
Answer: m=-18
Step-by-step
9*-2=-18 to get m, as 4/-2 = -2
Marie purchased b burritos for $5.50 each and paid $7 extra for a service fee. The total cost of Marie's purchase was $62. How many burritos did Marie buy?
Answer: 10 burritos
Step-by-step explanation:
Let y be the total cost, and b is the number of burritos
So we have the equation is
y= 5.50b + 7
Now we put a total cost of $62 in the y spot
62 = 5.50b + 7
Subtract 7 from both sides
55 = 5.50b
Divide 5.50 from both sides
b = 10 burritos
Answer: 10 burritos
Step-by-step explanation:
This is a worded question. The first step would be to extract the essential information and represent it as an easily understandable equation:
b is the number of burritos
$5.50 is the cost for each burrito
$7 is additionally charged for a service fee
We have to find the number of burritos (b)
Therefore, we can write the equation like this:
(5.50 * b) + 7 = 62
We can then rearrange the equation to get b on one side. Remember to follow the BIDMAS rules backwards!
(5.50 * b) + 7 = 62
5.50*b = 62-7
5.50*b = 55
b = 55/5.50
b = 10
Finally, always write a worded answer because it is a worded equation. For example, you could write:
Marie bought 10 burritos
Hoped this helped!
Please help ill give 5 stars or whatever just please answer
Answer:
x=43
2x=86
x+8=51
Step-by-step explanation:
2x+x+(x+8)=180
2x+x+x+8=180
4x+8=180
4x=172
x=43
2x=86
x+8=51
43+86+51
part 2: suppose that a simple random sample of tanks is selected and the sample mean capacity is found to be 8550 gallons. what is the z-score corresponding to this sample mean?
A simple random sample of tanks is selected and the sample mean capacity is found to be 8550 gallons. Therefore, The z score corresponding to a tank with a capacity of 8550 gallons is z = 0.50.
We can see that the actual capacity of the tank is normally distributed with a mean of 8544 gallons and a standard deviation of 12 gallons.
The actual capacity of the tank is normally distributed.
Let X = the actual volume of the tank
SO, X ~ Normal(μ = 8544 , σ² = (12)²)
The normal z-score probability distribution is given by:
Z = ~ N(0,1)
where μ = average capacity = 8544 gallons
σ = standard deviation = 12 gallons
Z score measures how many standard deviations the measurements are from the mean To do. Once you have determined the Z-score, look at the Z-score table to find the p-value (area) associated with that Z-score. This p-value is the probability that the value of the measure is less than X. which means that Percentile of X.
Now,
The probability of a randomly selected tank having a capacity of less than 8550 gallons is given by = P(X < 8550 gallons)
P(X < 8550 gallons) = P ( X - μ /σ < 8550 - 8544/12 )
= P(Z < 0.50)
= 0.6915
The above probabilities are calculated considering the value of x = 0.50 in a z-table with an area of 0.6915.
Therefore, The Z value corresponding to a tank with a capacity of 8550 gallons is z=0.
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Yolanda's assignment is to read at least 45 pages of a novel. Yolanda has read 28 pages. How many pages p does Yolanda have left to read? Write an inequality that represents this situation. Then solve the inequality.
Answer:17
Step-by-step explanation:
answer p+ 28 > 45
p>17
What is 3log₂x-(log₂3-log₂ (x+4)) written as a single logarithm?
If the equation be 3log₂x-(log₂3-log₂ (x+4)) then we get[tex]$\log _2\left(\frac{x^2(x+4)}{3}\right)[/tex].
What is meant by logarithmic identities?An exponential function has an opposite called a logarithmic function. In both exponential and log functions, the basis is the same.
An exponent and a number (the base) are inputs into a logarithmic function, which yields a result (the logarithm). The base that must be raised in order to obtain a number is represented by the number's logarithm.
The features of exponential functions can be investigated and exponential equations can be solved using logarithms. In calculus, where they are used to determine the slope of specific functions and the region enclosed by specific curves, they also become incredibly useful.
Let the given equation be 3log₂x-(log₂3-log₂ (x+4))
[tex]$$& \log _a(x)-\log _a(y)=\log _a\left(\frac{x}{y}\right) \\[/tex]
[tex]$$& {alog}(x)=\log \left(x^a\right)[/tex]
3 log₂ x - (log₂3 - log₂ (x+4))
simplifying the above equation, we get
log₂(x²) - log₂(3/x+4)
[tex]$& \left.\log _2 \left(\frac{\frac{x^2}{3}}{\frac{3}{x+4}}\right)=\log _2\left(\frac{x^2(x+4)}{3}\right)[/tex]
Therefore, by simplifying the equation 3log₂x-(log₂3-log₂ (x+4)) we get[tex]$\log _2\left(\frac{x^2(x+4)}{3}\right)[/tex].
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Do you always need three congruent corresponding parts to prove triangles congruent?
Yes, to prove triangles to be congruent it is compulsory to have at least three congruent corresponding parts.
Explanation:
Minimum congruent corresponding parts required to prove triangles to be congruent are as follow:
Triangle have three angles and three sides to be used for congruency.Types of congruency used to prove any two triangles to be congruent are SSS ( Side-Side- Side) , SAS( Side angel side) , ASA( Angle-side angle), AAS( angle angle side) and RHS( right angle- hypotenuse- side).Minimum three congruent corresponding parts are required to prove any triangles are congruent.Either all three sides, two angles and one side, two side one angle, or Right angle hypotenuse and one of the corresponding side.Therefore, minimum three congruent corresponding parts are required to prove any two triangles to be congruent.
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What is the formula of raw score?
The formula for raw score is simply the number of correct answers given by an individual on a test. It is calculated by subtracting the number of incorrect answers from the number of correct answers.
The formula for raw score is calculated by subtracting the number of incorrect answers given by an individual on a test from the number of correct answers given. This can be expressed as Raw Score = Number of Correct Answers - Number of Incorrect Answers.To calculate a raw score, start by counting the number of correct answers given by the individual on the test. Then, count the number of incorrect answers given. Subtract the number of incorrect answers from the number of correct answers. The result is the individual's raw score. This can be expressed as: Raw Score = Number of Correct Answers - Number of Incorrect Answers.
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Ver en español
Darrell's family is making 4 pizzas for dinner. They have
1
2
of a pound of shredded cheese and put an equal amount on each pizza. How many pounds of cheese do they put on each pizza?
Write your answer as a fraction or a whole number.
Answer:
1/4 pound of cheese on each pizza.
Step-by-step explanation:
To find the amount of cheese that goes on each pizza, we first need to find the total amount of cheese the family has. They have 1/2 + 1/2 = 1 pound of cheese in total. Since they are making 4 pizzas, they will put 1 / 4 = 1/4 pound of cheese on each pizza. Therefore, they will put 1/4 pound of cheese on each pizza.
Haru bikes to his friend’s house. After visiting for a while, Haru heads home. On the way, he stops at the market to buy a bottle of water. d(t) represents Haru’s distance from his house, in kilometers, after t hours.
Which answer option describes the range of d(t)?
(Answer and receive 20 points!)
The option that correctly describes the domain of d(t) is given as follows:
0 ≤ t ≤ 2.1.
How to obtain the domain of the function?The domain of a function is composed by the set that contains all possible input values of a function.
Hence, from the graph of a function, the domain is composed by the values assumed by the horizontal axis of the graph.
In this problem, the input and the output variables are defined as follows:
Input variable: t.Output variable: d(t).The values assumed by the horizontal axis of the graph are given as follows:
Between 0 and 2.1.
Hence the interval that gives the domain of d(t) is given as follows:
0 ≤ t ≤ 2.1.
As the input variable is t.
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1 1/3 x 3/8
fraction work
Answer:
1/2
Step-by-step explanation:
I first turned 1 1/3 into 4/3 because it's easier to work with.
[tex]\frac{4}{3} * \frac{3}{8}[/tex]
You can cancel out the threes, so all that's left is:
[tex]\frac{4}{8}[/tex]
which can then be simplified into 1/2
Answer: Shoot sorry I thought it was 11/3 x 3/8 I'm so sorry! But its 1/2
What is the meaning of the scale 1?
The scale 1 : 1 means that the size of the image and the pre-image will be same
The given scale = 1 : 1
The scaling is the process of changing the size of the figure using the scale factor. The scaling is also the transformation of figure.
The scale is 1 : 1, that is the ratio of the actual size of the figure and the size of the figure after transformation.
Here the scale 1 : 1 means the actual size and new size will be same. If we consider the figure the image and the preimage will be same
The image is the figure after the transformation and the pre-image is the figure before transformation
Therefore, the scale 1:1 means actual size and new size will be same
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scores on a 100-point final exam administered to all applied calculus classes at a large university are normally distributed with a mean of 69.5 and a standard deviation of 28.55. (a) what percentage of students taking the test had scores between 60 and 80? (round your answer to one decimal place.) % (b) what percentage of students taking the test had scores of at least 90? (round your answer to one decimal place.) % (c) what percentage of students taking the test had scores that were more than one standard deviation away from the mean? (round your answer to one decimal place.) % (d) at what score was the rate of change of the probability density function for the scores a maximum?
a) 0.7 % percentage of students taking the test had scores between 60 and 80.
b) 73.8% percentage of students taking the test had scores of at least 90.
c) 68% percentage of students taking the test had scores that were more than one standard deviation away from the mean.
d) The terms "probability distribution function" and "probability function" are also sometimes used to denote probability density functions. Probability Distribution Function can be used when the probability distribution is defined as a function over a general set of values. Alternatively, you can refer to the cumulative distribution function.
Let us assume that distribution is normal. As mean is 69.5
and standard deviation is 28.55,
z−score for 60 is (60-80)/ 28.55 = -0.7, and
z−score for 80 is (80-80)/28.55 = 0
Therefore, the area under the curve of the z result is −2 is 0.7. This is
z = +2 to z
=0.7 (4 or z = 0 to z = −2).
So the percentage of values between 60 and 80 is 0.7%.
b) (x > 90) = 1 - P( z < 90 - 69.5/ 28.55)
= 1 - (z < 0.71)
= 0.738
= 73.8%
Therefore, the percentage of students taking the test had scores of at least 90 is 73.8%.
c) The rule of thumb, or the 68-95-99.7% rule, falls within 1 standard deviation (68%), 2 standard deviations (95%), and 3 standard deviations (99.7%) of the mean Shows approximate percentage of data.
d) In probability theory, the probability density function (PDF) or continuous random variable density describes the value at a particular pattern (or point) in the pattern space (the set of possible values taken by a random variable) as is a function that can be interpreted as Relative probability that the value of the random variable is close to this sample. Probability density is the probability per unit length. That is, the absolute probability that a continuous random variable will take on a particular value is 0 (because there is an infinite set of possible values after all), but given the PDFs of two different samples, any random variable For a plot of , we can derive how much more likely the random variable is to be close to one sample than the other.
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based on data from a statistical abstract, only about 17% of senior citizens (65 years old or older) get the flu each year. however, about 23% of the people under 65 years old get the flu each year. in the general population, there are 10% senior citizens (65 years old or older). (round your answers to three decimal places.) (a) what is the probability that a person selected at random from the general population is senior citizen who will get the flu this season? (b) what is the probability that a person selected at random from the general population is a person under age 65 who will get the flu this year? (c) repeat parts (a) and (b) for a community that has 91% senior citizens. (a) (b) (d) repeat parts (a) and (b) for a community that has 52% senior citizens. (a) (b) g
A) The probability that a person selected at random from the general population is senior citizen who will get the flu this season is 0.017.
B) The probability that a person selected at random from the general population is a person under age 65 who will get the flu this year is 0.207.
C) a) 0.1547 community has 91% senior citizens.
b) 0.0207 community has 91% senior citizens.
D) a) 0.0884 community has 52% senior citizens.
b) 0.1104 community has 52% senior citizens.
Probability:Probability is a measure of the uncertainty of various phenomena. For example, if you roll a die, the possible outcomes are defined by probabilities. This distribution can be defined using random experiments with uncertain or unpredictable outcomes.
A) (a) The probability that a person selected at random from the general population is senior citizen who will get the flu this season is
0.10 x 0.17 = 0.017
(b) The probability that a person selected randomly from the general population is a person under age 65 who will get the flu this year is
(1 - 0.10) x 0.23 = 0.9 x 0.23 = 0.207
(c) (a) 0.91 x 0.17 = 0.1547
(b) (1 - 0.91) x 0.23 = 0.09 x 0.23 = 0.0207
Therefore, 91% senior citizens has 0.1547 flu
and b) 0.0207 senior citizens are there.
(d) (a) 0.52 x 0.17 = 0.0884
(b) (1 - 0.52) x 0.23 = 0.48 x 0.23 = 0.1104
Therefore, 52% senior citizens has 0.0884 probability of getting flu.
b) 0.1104 community has flu.
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the product of five and w is the same as w to the third power
Answer:
Step-by-step explanation:
5 x w=w^3?
(I don't know but that's how I would put it based on that...)
What is the recursive formula for this geometric sequence? -2, -16, -128, -1024,...
A. a1=-2 {an=an-1•14
B. a1=-8 {an=an-1•2
C. a1=8 {an=an-1•(-2)
D. a1=-2 {an=an-1•8
The recursive formula of geometric sequence is aₙ = -2 x [tex]8^{n-1}[/tex].
What is geometric sequence?A unique kind of sequence called a geometric sequence has a constant ratio between every two succeeding terms. This ratio is regarded as one of the geometric sequence's common ratios.
We have geometric sequence;
-2, -16, -128, -1024 ,......
The terms;
a₁ = -2
a₂ = -16
a₃ = -128
a₄ = -1024
The common ratio;
a₂ = -16 = -2 x 8
a₃ = -128 = -16 x 8
a₄ = -1024 = -128 x 8
So, the common ratio is 8.
Therefore, the recursive formula is aₙ = -2 x [tex]8^{n-1}[/tex].
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What is the limit of f/x )= x?
The value of the function f(x) = x when the limit x approaches to 0 is equal to 0.
As given in the function,
Given function is equal to:
f(x) = x
Value for the limit x approaches to zero
When x approaches to zero means x approaches to right hand side limit to zero or left hand side limit to zero
When limit x→0+ then the function f(x) = x is equal to 0
When limit x → 0- then the function f(x) = x is equal to 0.
[tex]\lim_{x \to 0} f(x)[/tex]
= [tex]\lim_{x \to 0} ( x )[/tex]
= 0
Therefore, the value of the function f(x) when limit x approaches to zero is equal to 0.
The complete question is:
What is the limit of f(x) = x when x approaches to 0?
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Question 2 of 5
Find the surface area of a cube with side lengths of 3 meters.
Use the formula SA = 6s² where s = side length.
A. 324 square meters
B. 81 square meters
OC. 15 square meters
D. 54 square meters
Answer:
option D is the right answer
What equation could be used to solve for X in this triangle?
Answer:
[tex](x+10)+(2x+5)+35=180[/tex]
Step-by-step explanation:
Angles in a triangle add to [tex]180^{\circ}[/tex].
What value of b makes 6.8x + b equivalent to 3.4(2x - 8)
Answer: b = -27.2
Step-by-step explanation:
6.8x + b = 3.4(2x - 8)
6.8x + b = 6.8x - 27.2
b = -27.2