Answer:hi
Step-by-step explanation:
PLEASE HELP 50 BRAINLY POINTS IF YOU ANSWER THIS QUESTION CORRECTLY
A probability value is listed at the top of each column. Determine the probability for each situation, then drag and drop each situation into the column under its correct probability.
The list of all probabilities from first to last are 0.5, 0.5, 0.2, 0.4, 0.5,
and 0.2.
What is probability?Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.
There are a total of 6 possibilities when rolling a die and of which three are even numbers.
P(rolling an even number is) = 3/6 = 1/2 0.5.
There are two possibilities when flipping a coin,
∴ The probability of getting a head is (1/2) = 0.5.
There are a total of (1 + 1 + 3) = 5 possibilities of choosing a block out of which one is red, therefore the probability of choosing a red is = (1/5) = 0.2.
Total 10 marbles and 4 blue marbles, hence the probability of choosing a blue marble is (4/10) = 2/5 = 0.4.
There are a total of 8 balls out of which 4 are soccer balls, hence the probability of choosing a soccer ball is = 4/8 = 1/2 = 0.5.
Total 15 balls out of which 3 tennis balls hence the probability of choosing a tennis ball is = 3/15 = 0.2.
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Explain why a selection of 10 students from your class can have marks that aren’t normally distributed when the marks of entire class are normally distributed.
The equation of a line perpendicular to y=3x-1 and goes through (0,2)
Answer:
y = [tex]-\frac{1}{3}[/tex]x + 2
Step-by-step explanation:
Find the reciprocal change the sign of the gradient (m=3):
[tex]-\frac{1}{3}[/tex]
so
y = [tex]-\frac{1}{3}[/tex]x + c
The intersect is 2, so c = 2
Final answer: y = [tex]-\frac{1}{3}[/tex]x + 2
IX.
A sorting machine at an orange processing plant has to sort 720 tons of oranges to meet a
deadline. The machine can process 360 tons of oranges in 50 minutes. Determine how
long it will take the machine to sort 720 tons of oranges.
Proportionately, the sorting machine will take 100 minutes (1 hour and 40 minutes) to process 720 tons if it takes 50 minutes to process 360 tons.
What is proportion?Proportion is the ratio or numerical relationship that one quantity bears to another.
Proportions are equated to each other to find missing variables.
Proportions are fractional values, usually depicted as fractions, decimals, or percentages.
The total number of oranges to sort = 720 tons
Machine processing speed = 360 tons per 50 minutes
Proportionately, the machine can process 7.2 tons per minute (360/50).
The time to sort 720 tons = 100 minutes (720/360 x 50) or (720/7.2)
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How many real solutions are there to 5x^2+6x+4=0?
The given quadratic equation 5x^2+6x+4=0 has no real roots or 0 real roots.
What is a quadratic equation?A quadratic equation is any algebraic expression that can be expressed in a standard form where x represents an unknown number, a, b, and c represent known values, and where a 0 is true.
So, we have the equation:
5x^2+6x+4=0
Discriminant (D): b² - 4ac
Insert values in the given formula as follows:
b² - 4ac is 6² - 4(5)(4).
= 36 - 80
= - 44 and it is less than zero.
No real roots
Therefore, the given quadratic equation 5x^2+6x+4=0 has no real roots or 0 real roots.
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An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on the number of engines made. If
x engines are made, then the unit cost is given by the function C(x)-0.3x²-192x+47,470. How many engines must be made to minimize the unit cost?
Do not round your answer.
There are 320 engines must be made to minimize the unit cost.
What is an expression?Expression in math's is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Given that;
The unit cost is given by the function,
⇒ C(x)= 0.3x²- 192x + 47,470
Now,
Since, The unit cost is given by the function,
⇒ C(x)= 0.3x²- 192x + 47,470
Hence, We get;
⇒ dC/dx = 0.6x - 192
Put dC/dx = 0
⇒ 0 = 0.6x - 192
⇒ 0.6x = 192
⇒ x = 320
And, d²C/dx² = - 192 < 0
Hence, This gives the maximum value.
So, The number of engines which must be made to minimize the unit cost = 320
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A salon wants to conduct a survey in order to study the consumption pattern of its consumers. The population mean spending on visiting salon per month is unknown with the population standard deviation is assumed to be $200. A random sample of 55 customers is selected and the sample mean spending on visiting salon per month is $800.
(a) Construct a 95% confidence interval estimate for the population mean spending by a customer on visiting salon per month. (3 marks)
(b) It is suggested to do the second round inspection. This time, the sample size is 120. What is the sampling error at 95% confidence level? (2 marks)
a) The 95% confidence interval estimate for the population mean spending by a customer on visiting salon per month is given as follows: (747, 853).
b) The sampling error at 95% confidence level is of: $35.78.
What is a z-distribution confidence interval?The bounds of the confidence interval are given as follows:
[tex]\overline{x} \pm z\frac{\sigma}{\sqrt{n}}[/tex]
In which:
[tex]\overline{x}[/tex] is the sample mean.z is the critical value.n is the sample size.[tex]\sigma[/tex] is the standard deviation for the population.The parameters for this problem are given as follows:
[tex]\overline{x} = 800, \mu = 200, n = 55, z = 1.96[/tex]
Hence the lower bound of the interval is of:
800 - 200 x 1.96/square root of 55 = 747.
The upper bound of the interval is of:
800 + 200 x 1.96/square root of 55 = 853.
The sampling error for a sample size of 120 is calculated as follows:
200 x 1.96/square root of 120 = $35.78.
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Sine, Cosine, Tangent question below
Answer:False
Its just simply incorrect
1.
For a birthday party, Marissa bought three cartons of ice cream at $4.59 each and two packages of plastic
bowls at $3.00 each. If food is not taxed and non-emergency grocery items are taxed at the rate of 5%, what
was her total bill?
Answer:
$20.07
Step-by-step explanation:
You want Marissa's total bill when she bought three cartons of ice cream at $4.59 each and two packages of plastic bowls at $3.00 each, with the plastic being taxed at 5%.
Extended amountsThe amount for each item will be the product of the cost per unit and the number of units.
ice cream total = 3 × $4.59 = $13.77
plastic total = 2 × $3.00 = $6.00
TaxThe tax is applied only to the plastic, so the amount of tax is ...
5% × $6.00 = $0.30
Total billThe total bill is the sum of the item costs and the tax:
$13.77 +6.00 +0.30 = $20.07
Marissa's total bill was $20.07.
Could the average person lift the weight of $150 in quarters? HINT: The average quarter weighs 0.2 oz.
The solution is 120 ounces
An average man can lift the weight of $ 150 in quarters
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the total weight an average man can lift be = A
Now , the weight of an average quarter = 0.2 ounces
Now , Number of quarters in $ 1 = 4 quarters
Let the total amount be = $ 150
So , the number of quarters in $ 150 is given by the equation
Number of quarters in $ 150 = 150 x 4
Substituting the values in the equation , we get
Number of quarters in $ 150 = 600 quarters
And , the weight of 600 quarters = 600 x weight of an average quarter
Substituting the values in the equation , we get
Number of quarters in $ 150 = 600 quarters
The weight of 600 quarters = 600 x 0.2
The weight of 600 quarters = 120 ounces
Therefore , the value of A is 120 ounces
Hence , an average man can lift the weight of $ 150 in quarters
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2)
Earings (in dollars)
SALESPERSON'S EARNINGS
500
400
300
200
100
y
0 1 2 3 4 5 6 7 8
Sales (Thousands of dollars)
2a) Explain what x represents. Sales
2 b) Explain what y represents earnings
2 c) Find the slope of the line. Make sure to include units
2 d) Explain what the slope represents for this example.
Use the numbers in your explanation.
The solution is
a) The x represents the number of sales
b) The y represents the total earnings in dollars
c) The slope of the line m = 50 earnings (in dollars) per sale
d ) The slope represents the total earnings per sales and it is $ 50 per sale
What is an Equation of a line?
The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept
And y - y₁ = m ( x - x₁ )
y = y-coordinate of second point
y₁ = y-coordinate of point one
m = slope
x = x-coordinate of second point
x₁ = x-coordinate of point one
The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given data ,
Let the equation of line be represented as A
Now , the value of A is given by the equation
Let the number of sales be = x
Let the total earnings be = y
Now , let the two points on the graph be A and B
where the value of A = A ( 3 , 200 )
And , the value of B = B ( 5 , 300 )
Now , the slope of the line between the points A and B is given by
Slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Substituting the values in the equation , we get
Slope m = ( 300 - 200 ) / ( 5 - 3 )
Slope m = 100 / 2
Slope m = 50
So , the slope of the line is given by m = 50 earnings per sales
And , Slope m = $ 50 per sales
The equation of line is y - y₁ = m ( x - x₁ )
Substituting the values in the equation , we get
y - 200 = 50 ( x - 3 )
y - 200 = 50x - 150
Adding 200 on both sides of the equation , we get
y = 50x + 50
Therefore , the equation of line is y = 50x + 50
Hence ,
a) The x represents the number of sales
b) The y represents the total earnings in dollars
c) The slope of the line m = 50 earnings (in dollars) per sale
d ) The slope represents the total earnings per sales and it is $ 50 per sale
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How do i say uwu please tell me right now now right now
Answer: look it up how to pronounce the word
Step-by-step explanation: go to goggle translate or an app.
what is an equation of the line that passes through the points (2,7) and (8,4)
Answer:
y = - 0.5x + 8
Step-by-step explanation:
[tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
[tex]\frac{7-4}{2-8}[/tex]
[tex]\frac{3}{-6}[/tex]
[tex]-\frac{1}{2}[/tex]
m = - 1/2
y = - 1/2x + b
4 = - 0.5(8) + b
4 = - 4 + b
b = 8
y = - 0.5x + 8
Pls someone help I’ll give 100 points pls
Answer:
ST and RQ
Step-by-step explanation:
The 'arrows' on the line segments mean they are parallel
A group of researchers wants to develop an experiment to determine whether a new drug effectively treats high blood pressure. The researchers want to inject the drug in monkeys first to determine whether there are any potential serious side effects.
Part A: What are some possible ethical issues to this type of testing? (5 points)
Part B: While conducting the experiment, the researchers find that blood pressure levels return to normal, and they declare the drug is the cause of the change. Is this a good assumption? Explain. (5 points) (10 points)
The possible ethical issues of testing are given below.
What is drug?
Any chemical that, when consumed, alters the physiology or psychology of an organism qualifies as a drug. Usually, foods and other substances that support nutrition are distinguished from drugs.
(A)
Possible ethical problems: Since animals are able to perceive their surroundings, they have the right to exist free from human interference.
Therefore, animal research should not be done by humans. It is wrong to use animals only as stools to advance scientific understanding.
The right for an animal to live a full life without pain or suffering should be equal to that of humans.
Part B:
For the following reason, this is a bad assumption.
It does not follow that just because a drug causes the blood pressure levels in monkeys to return to normal after consumption that the drug will do the same for humans. This is because how humans and monkeys react to drugs differ.
Furthermore, it's unclear whether the drug's return to normal blood pressure was caused by it or by some other confounding variables that the researcher neglected to take into account.
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I need this answer asap
Answer:
x=-8
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Answer:
x= -8
Step-by-step explanation:
-------------------------
Andrew buys 8 bottles of cranberry juice at the corner store for a total cost of $5.68. If each bottle costs the same amount, how much is 6 bottles of juice?
Answer:
it is y=kx
Step-by-step explanation:
The cost of 6 bottle juice is $4.26.
What is cost?
A cost is the value of money that has been expended to produce something or provide a service and is therefore no longer available for use in production, research, retail, and accounting. In the case of an acquisition cost, the money spent on the acquisition is considered the cost.
Given:
Andrew buys 8 bottles of cranberry juice at the corner store for a total cost of $5.68.
So, the cost of each bottle is,
$5.68/8 = $0.71
Now to find the cost of 6 bottle of juice.
6 x $0.71 = $4.26
Hence, the cost of 6 bottle juice is $4.26.
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Determine the x-intercept of the line whose equation is given: y = 4 x + 2 a. (0, 2) b. (negative 2, 0) c. (0, negative one-half) d. (Negative one-half, 0) Please select the best answer from the choices provided A B C D
Answer:
D
Step-by-step explanation:
the x- intercept is the point where the line crosses the x- axis.
any point on the x- axis has a y- coordinate of zero.
let y = 0 in the equation and solve for x , that is
4x + 2 = 0 ( subtract 2 from both sides )
4x = - 2 ( divide both sides by 4 )
x = [tex]\frac{-2}{4}[/tex] = - [tex]\frac{1}{2}[/tex] ← x- intercept
coordinates of x- intercept = (- [tex]\frac{1}{2}[/tex], 0 )
Please factor the following questions
Factor the following questions is.6 m(x+2 n+2),
What is factor?
In mathematics, an integer m that can be multiplied by another integer to create n is known as a divisor of an integer n, also known as a factor of n. One can also state that n is a multiple of m in this situation.
[tex]6 x m+12 m+12 m n[/tex]
Factor out common term[tex]$6 m$ : $6 m(x+2+2 n)$[/tex]
[tex]\begin{aligned}& =6 m(x+2+2 n) \\& =6 m(x+2 n+2)\end{aligned}[/tex]
[tex]13 r+r+9 x r[/tex]
Add similar elements: [tex]$13 r+r=14 r$[/tex]
[tex]=14 r+9 x r[/tex]
[tex]15 x y+45 y+3 m y[/tex]
Factor out common term [tex]3y: $\quad 3 y(5 x+15+m)$[/tex]
[tex]\begin{aligned}& =3 y(5 x+15+m) \\& =3 y(5 x+m+15)\end{aligned}[/tex]
[tex]$7 m n+13 m n+8 m n$[/tex]
Add similar elements: [tex]$7 m n+13 m n+8 m n=28 m n$[/tex][tex]$=28 \mathrm{mn}$[/tex]
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Determine the type of basic curve the set of parametric equations represents.
x(t)=3cos(t)
y(t)=3sin(t)
Select the correct answer below:
ellipse
circle
hyperbola
line
parabola
Answer:
Then it is a circle!
Suppose you roll a six-sided die. What is the probability that a 2 or 5 is NOT rolled? (in fraction form)
A) 1/6
B)2/6
C) 3/6
D)4/6
On solving the provided question, we can say that the probability that a 2 or 5 is NOT rolled is - 1- 1/3 = 2/3
What is probability?A branch of mathematics called probability describes the likelihood that an event will occur or that a proposition is true. The probability of an event ranges from 1 to 1, with 1 indicating certainty and numbers in between indicating the difficulty of the event.
to determine the likelihood of rolling a die with a 2 or a 5 on it. The probability formula can be used to do this.
[tex]P(E) = (Number of times event occurs)/(Total number of trials)[/tex]
S = 1, 2, 3, 4, 5, 6 is a sample space of potential results when rolling a dice.
If the likelihood of rolling a die and having a result of 2 or 5 is event E.
Number of occurrences [n(E)] = 2
[n(S)] = 6 trials in all
[tex]P(E) = 2/6 = \frac{1}{3}[/tex]
So, the probability that a 2 or 5 is NOT rolled is - \
1- 1/3 = 2/3
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Two parallel lines are cut by a transversal, as shown. If m 21 = 114°, what is m 22?
help me asap
Answer:
∠ 2 = 66°
Step-by-step explanation:
∠ 1 and ∠ 2 are same- side interior angles and sum to 180° , then
∠ 2 + 114° = 180° ( subtract 114° from both sides )
∠ 2 = 66°
A school sells adult tickets and student tickets for a play. Adult tickets cost $8 each and student ticket cost $4 each. They collect $320 in total
Answer:
The answer is 8a + 4s = $320
Step-by-step explanation:
Let us take a for adult tickets and s for student ticket we get,
8a and 4s
They collect $320 in total
8a + 4s = $320
Thus, The equation represents this relationship is 8a + 4s = $320
i need help with finding the slope
Help!!!! Urgent pls!!!!
Answer: 34.44
Step-by-step explanation:
Answer:its d
Step-by-step explanation:
consider the following method, which is intended to return the product of 3 and the nonnegative difference between its two int parameters.
Answer: the answer is try hard and if you don’t succeed try try again
Step-by-step explanation:
Please help asap will give BRAINLIEST
Solve 2 4/7 X 2/3
1 15/21
2 8/21
2 12/14
3 2/12
Answer:
12
X
7
Step-by-step explanation:
What do the graphs indicate about (4, 4) ?
A. It is the only ordered pair that satisfies y = 1/4 * x + 3 it is also the only ordered pair that satisfies . y = 2x - 4
B. It is the only ordered pair that satisfies y = 4x + 3 it is also the only ordered pair that satisfies y = 1/2 * x - 4
C. It is the only ordered pair that satisfies both y = 1/4 * x + 3 and . y = 2x - 4
It is the only ordered pair that satisfies both y = 4x + 3
D. and y = 1/2 * x - 4
Point (4,4) is the only ordered pair that satisfies both equations y = (1/4) x + 3 and y = 2x - 4.
What is an equation?An equation is a combination of different variables, in which two mathematical expressions are equal to each other.
In the given graph,
The point (4, 4) is the intersection point of the lines.
Since, the point (4, 4) is intersection point,
Therefore, this point will satisfy the equations of line.
From the options, take equations,
y = (1/4) x + 3
Substitute x = 4 and y = 4
4 = (1/4) 4 + 3
4 = 4
y = 2x - 4
Substitute x = 4 and y = 4
4 = 2 × 4 - 4
4 = 4
The point (4,4) satisfies both the equations.
Therefore, (4,4) is the only ordered pair that satisfies both equations y = (1/4) x + 3 and y = 2x - 4.
Option (C) is correct option.
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Find the measure of angle A.
Answer: 32
Step-by-step explanation:
Answer:
25 degrees
Step-by-step explanation:
sum of all three angles of a triangle equal 180
135+5x+4x=180
135+9x=180
-135. -135
9x=45
x=5
angle A is 5x
5(5)
25
hopes this helps please mark brainliest
-3-10x=25+4x what’s the answer
Answer:
[tex] \: \: \: \: \: \: \: \: \: \: -3-10x=25+4x \\ ⇒ - 10x - 4x = 25 + 3 \\ ⇒ \: \: - 14x = 28 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ ⇒x = - \frac{ 28}{ 14} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ ⇒x = - 2 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]Step-by-step explanation:
Thank you