In order to solve this problem, we will calculate the z-score of the given data.
To do this, we use the formula,
[tex]z=\frac{x-\mu}{\sigma}[/tex]We plug in the given data:
[tex]z=\frac{154-100}{19}\approx2.8421[/tex]With this z-score, we can consult a z-score probability table or use an online resource. However, this will give us
[tex]P(z<2.8421)[/tex]but we are interested in itbeing greater than it, so we must calculate
[tex]1-P(z<2.8421)=1-0.99776=0.00224[/tex]So, the percentage of the population that has an IQ above 154 is 0.224%.
Which best describes what happens when the number of trials increases significantly
Solution:
Given:
[tex]\begin{gathered} Head,H=4 \\ Total=12 \\ P(H)=\frac{4}{12} \\ P(H)=\frac{1}{3} \end{gathered}[/tex]From the probability, it can be deduced that as the number of trials increases, the observed frequency will get closer to the expected frequency.
Therefore, if the number of trials increases significantly, then the observed frequency of landing heads up gets closer to the expected frequency based on the probability of the coin landing heads up.
6. Let the measurement of ZBAC be 86° & ZBAD be 52°. What is the measurement of ZDAC? 1380 24° 52° 340
Determine The Domain for the relation below
Answer:
The domain would be all real numbers.
Step-by-step explanation:
For Interval notation, it would be written as (-∝, ∝)
(I don't know what signs those are, but they are supposed to be infinity signs)
Domain is what x can or can't be. In the function that is in the image, the function is y=a constant. So, no matter what x is, y will always be the constant. So, x can be all real numbers.
Hope this helps!
What is the factorization of the trinomial below?x^3 - 2x² - 35x
Notice that the factor x is a common factor for all three terms. Then, factor out x:
[tex]x^3-2x^2-35x=x(x^2-2x-35)[/tex]Notice that the factor x²-2x-35 is a quadratic expression.
Find two numbers whose sum is -2 and whose product is -35 to factor out the quadratic expression. Since 5-7 = -2 and (5)(-7)=-35, those two numbers are -7 and 5. Then, the quadratic expression can be factored out as:
[tex]x^2-2x-35=(x-7)(x+5)[/tex]Then:
[tex]x(x^2-2x-35)=x(x-7)(x+5)[/tex]Then, the factorization of the given trinomial is:
[tex]x^3-2x^2-35x=x(x-7)(x+5)[/tex]Therefore, the correct choice is option C) x(x-7)(x+5)
A restaurant sells tea for $1.50 plus $0.50 per refill. the restaurant brews enough tea for 4 refills per customer. The linear function that represents the total cost of, r , tea refill is C(r)=0.5r+1.5.
C(r)=0.5r+1.5.
The domain of a function is the set of all input variables of the function. In this case "r"
The domain r is the number of tea refills.
order the numbers from least to greatest -2 3/4 negative 1/3 0.2 negative two negative 1 and 1/2 -0.8
So the numbers we have are:
-2, 3/4, -1/3, 0.2, -1, 1/2 & -0.8
So the numbers from least to greatest go as follows:
-2, -1, -0.8, -1/3, 0.2, 1/2, 3/4
I would like to work through how to determine whether this is even, odd or netiher.
We are given a function and are asked to determine if it's even, odd or neither. Our approach is to employ the negative test and modify the function to ascertain its status. This will be depicted below.
[tex]h(x)=-6x^3+x^2+8x+8[/tex]This is our original function, next, we find h(-x)
[tex]\begin{gathered} h(x)=-6x^3+x^2+8x+8 \\ h(-x)=-6(-_{}x)^3+(-x)^2+8(-x)+8 \\ h(-x)=6x^3+x^2-8x+8 \\ h(-x)=6x^3+x^2-8x+8 \\ h(-x)=-(-6x^3-x^2+8x-8) \end{gathered}[/tex]Looking at the function h(x) and h(-x), we have to put the polynomial in the correct degree. The input of the negative sign before the h(-x) function is to check if the function will maintain the same format with the original function, h(x). The disparity is what tells us if it is even, odd or neither of the two.
Now we know h(-x), we now use a certain set of conditions to test if function is even, odd or neither.
[tex]\begin{gathered} \text{if h(x)=h(-x), then function is even} \\ \text{if h(-x)=-h(x), then function is odd} \\ \text{if it is neither of the above, function is neither even nor odd.} \end{gathered}[/tex]In this case, based on the above criteria, the function is neither even nor odd.
List the sale price of the item. Round to two decimal places when necessary. Original price: $25; Markdown: 12%.
Answer
Sale Price = $22
Explanation
Mark down percentage is given as
[tex]\text{Markdown percentage = }\frac{(Original\text{ Price) - (Sale Price)}}{(Original\text{ }Price)}\times100[/tex]For this question,
Markdown percentage = 12%
Original Price = $25
Sale Price = ?
[tex]\begin{gathered} \text{Markdown percentage = }\frac{(Original\text{ Price) - (Sale Price)}}{(Original\text{ }Price)}\times100 \\ 12=\frac{25-(\text{Sale Price)}}{25}\times100 \\ \text{Divide both sides by 100} \\ 0.12=\frac{25-(\text{Sale Price)}}{25} \\ \text{Cross multiply} \\ 25-(\text{Sale Price) = (0.12 }\times25) \end{gathered}[/tex]25 - (Sale Price) = 3
Sale Price = 25 - 3
Sale Price = $22
Hope this Helps!!!
Hi tutor,What is the connection between the slope of a tangent of a function at a given point, and it’s derivative evaluated at that point? If possible, can you please use a diagram and derivation steps to help explain?
Given:
Derivative and sope of tangent
Required:
We want to define relation
Explanation:
The derivative of a function gives us the slope of the line tangent to the function at any point on the graph. This can be used to find the equation of that tangent line for example
and the slope of that tangent is the derivative of function at point P
Now to find equation of a tangent line
1) Find the first derivative of f(x).
2) Plug x value of the indicated point into f '(x) to find the slope at x.
3) Plug x value into f(x) to find the y coordinate of the tangent point.
4) Combine the slope from step 2 and point from step 3 using the point-slope formula to find the equation for the tangent line.
need help asappppppp
At first, we will find the volume of the cone and the volume of the sphere, then subtract them to find the answer
The rule of the volume of the cone is
[tex]V_c=\frac{1}{3}\times\pi\times r^2\times h[/tex]Since the height of the cone is 1 cm and its radius is 3 cm, then
h = 1 and r = 3
Substitute them in the rule above
[tex]\begin{gathered} V_c=\frac{1}{3}\times\pi\times(3)^2\times(1) \\ V_c=\frac{1}{3}\times\pi\times9\times1 \\ V_c=3\pi \end{gathered}[/tex]The formula of the volume of the sphere is
[tex]V_{sp}=\frac{4}{3}\times\pi\times r^3[/tex]Since the diameter of the sphere is 3 cm, then
[tex]\begin{gathered} r=\frac{1}{2}\times3 \\ r=\frac{3}{2} \\ r=1.5\operatorname{cm} \end{gathered}[/tex]Substitute it in the formula above
[tex]\begin{gathered} V_{sp}=\frac{4}{3}\times\pi\times(1.5)^3 \\ V_{sp}=4.5\pi \end{gathered}[/tex]Noe subtract them to find the answer
[tex]\begin{gathered} V=4.5\pi-3\pi \\ V=1.5\pi \end{gathered}[/tex]The amount of the extra soap is
[tex]1.5\pi cm^3[/tex]i need help with math
the new equation would be:
[tex]y=2500x+35000[/tex]if the new rate is changed to 3000. The new equation is:
[tex]y=3000x+32500[/tex]factor the equation 3x^2y^2-15xy^2
3xy²(x - 5)
Explanation:The equation: 3x²y²-15xy²
x is common to both expression, we factorise it:
x(3xy² - 15y²)
y² is common to both expression, we factorise it:
xy²(3x - 15)
3 is common to both expression, we factorise it:
3xy²(x - 5)
Two of the angles in a triangle measure 56° and 6° what is the measure of the third angle
The sum of angle in a triangle is 180°
If two of the angles in a triangle is 56° and 6°
Let x be the third angle
56 + 6 + x = 180° (sum of angle in a triangle)
62° + x = 180°
subtract 62° from both-side of the equation
x = 180° - 62°
x = 118°
Hence, the third side is 118°
Part DWhat if the second six-sided die is replaced by an eight-sided die. How can you change the table to show the sample space for rolling a six-sideddie and then an eight-sided die? Explain.
For a sample space for rolling a six-sided die and then an eight-sided die is constructed as
We just change the probable events of the second die up to 8 and then combine it with the possible combinations with a normal six die, which is shown in the table above.
How to calculate the square foot
Solution:
To find square feet, multiply the length measurement in feet by the width measurement in feet.
Hence, the standard formula to calculate square foot is;
[tex]length\times width[/tex]What is the answer to 720x+(-20x)
720x + (-20x)
Remember
(+)(+) = (+)
(+)(-) = (-)
So + (-20x) will equal - 20x, so
720x + (-20x) = 720x - 20x
Subtract 20 from 720
720 - 20 = 700, so
720x + (-20x) = 720x - 20x = 700x
cost of iPhone $699 with a 15% discount what will be the total paid
cost = $699
Discount = 15% = 15/100 = 0.15 (decimal form)
Multiply the cost by the discount in decimal form
699 x 0.15 = 104.85
Subtract the discount amount
699-104.85 = $594.15
complete the statement type your answer as a number 3 gallons =pints
Answer:
[tex]3\text{ gallons = 24 pints}[/tex]Explanation:
We want to convert 3 gallons to pints.
Recall that;
[tex]1\text{ gallon = 8 pints}[/tex]So, for 3 gallons, we have;
[tex]3\text{ gallons = 3}\times8\text{ pints= 24 pints}[/tex]Therefore;
[tex]3\text{ gallons = 24 pints}[/tex]2. Kylie wants to earn $100 a month. She rakes leaves for $7 an hour and cleans windows for $6 an hour. Kylie cannot work more than 30 hours a week. Write the system of inequalities that represents this situation. Be sure to define your variables.
Let L be the amount of hours that Kylie works on raking leaves and W the amount of hours that she works on cleaning windows (on a week).
Since she cannot work more than 30 hours a week, and the total time spent working is L+W, then:
[tex]L+W<30[/tex]Since one month has 4 weeks, she should win $25 a week to earn $100 in a month. Since she gets paid $7 per hour for raking leaves, after L hours she would have won a total amount of 7L, and since she gets paid $6 for cleaning windows, she would have won 6W after W hours. The total amount of money earned would be 7L+6W, which should be greater than 25:
[tex]25\le7L+6W[/tex]Therefore, the system of inequalities that represents the situation, is:
[tex]\begin{gathered} L+W\le30 \\ 25\le7L+6W \end{gathered}[/tex]Use the following figure and information to complete the proof. Given: m∥n Line l is a transversal of lines m and n. Prove: ∠3≅∠5
Answer:
1. Given.
2. Definition of vertical angles.
3. Vertical angles theorem.
4. Definition of corresponding angles.
5. Corresponding angles postulate.
6. Transitive property of congruence.
Explanation:
1. This statement is the given part of the problem
2. vertical angles are the pair of opposite angles that are formed when two line segments intersect. Angles 1 and 3 verify this definition, thus they're vertical angles.
3. The vertical angles theorem states that a pair of two vertical angles have the same measure.
4. Corresponding angles are the angles that are formed in matching corners with the transversal when two parallel lines are intersected by another line. Thus, angles 1 and 5 are corresponding angles.
5. The corresponding angles postulate states that, when two parallel lines are cut by a transversal, the resulting corresponding angles are congruent. Thus, angles 1 and 5 are congruent.
6. The transitive property of congruence states that if a is congruent to b and b is congruent to c, then a is congruent to c.
This means:
[tex]\angle3\cong\angle1\cong\angle5\Rightarrow\angle3\cong\angle5[/tex]
What is 10 meters long by 7 meters wide in square meters?
1) Assuming this is a quadrilateral, then the area is width times length
So
A =10 x 7
A= 70 m²
It's an area of 70 m²
According to the United States Treasury Department, the U.S national debt was 1.815 x 10 to the 13th power dollars on September 30, 2015 . On September 29, 2005 , the national debt was 4.974 x 10 to the power of 12 dollars . Find the amount of Increase in the national debt from September of 2005 to september of 2015? Write a sentence describing the increase in the national debt from 2005 to 2015 using scientific notation and using standard form.
The U.S national debt on 2015 was 1.815 * 10^13
The U.S national debt on 2005 was 4.974 * 10^12
So, the amount of increase =
1.815 * 10^13 - 4.974 * 10^12 =
18.15 * 10^12 - 4.974 * 10^12 =
(18.15 - 4.974) * 10^12 = 13.176 * 10^12
= 1.3176 * 10 * 10^12 = 1.3176 * 10^13
8. Bobbie is self-employed and made a profit of $22, 150 last year. She mustpay $2572 in income tax. She also must pay social security tax of 13.3% ofher profit. What is Bobbie's total tax liability? Round to the nearestdollar,a $5912b. $4998c. $5518
income tax = $2572
social security tax = 13.3% of the profit
= 13.3% of $22,150
= 13.3/100 * 22,150 = $2,945.95
So, the total tax =
2572 + 2,945.95 = $5,517.95
Rounding to the nearest dollar
the total tax = $5,518
The answer is option C. $5,518
Evaluate the expression.
sin2 360° + cos2 360°
Answer:
1
Step-by-step explanation:
Hi, i need help with question 1 of my Precalculus homework.
The interval notation uses the form (x1,x2) and it depends on whether the interval includes or does not includes the limits. if the interval includes the limit then we use the notation [x1,x2].
a. Since neither of the endpoints is included in the inequality the interval notation should be
[tex]-1b. The inequality includes all numbers greater or equal to 5, the interval notation should be [tex]x\ge5=\lbrack5,\infty)[/tex]c. The inequality includes all numbers that are less to 4 but does not include number -4, the interval notation should be
[tex]-4>x=(-\infty,-4)[/tex]d. The solution for the inequality includes two solutions, then we write both separately and unite them together. The interval notation should be
[tex]-4\le x<-1or0e. The interval notation should be between numbers 5 and 100 [tex]\lbrack5,100\rbrack[/tex]f. The numbers should be all less than pi, but it does not include pi
[tex](-\infty,\pi)[/tex]g. all numbers greater or equal to 3
[tex]\lbrack3,\infty)[/tex]h. All numbers less or equal to -2
[tex](-\infty,-2\rbrack[/tex]i. All numbers greater than 0, but it does not include 0
[tex](0,\infty)[/tex]j. all numbers less than e but it does not include e
[tex](-\infty,e)[/tex]if 5 ibs apples cost $2.99, how much would 3 ibs cost?
We know that 5 lbs of apples cost $2.99
To know how much do 3 lbs of apple cost, you can use cross multiplication
If 5 lbs cost $2.99
Then 3 lbs cost $x
The proportion between the price and the number of apples is the same, you have to calculate it as:
[tex]\begin{gathered} \frac{2.99}{5}=\frac{x}{3} \\ (\frac{2.99}{5})\cdot3=x \\ x=1.794 \end{gathered}[/tex]3 lbs of apples cost $1.79
Find the equation of the line with Slope = 5 and passing through (-7,-34). Write your equation in the form y=mx+b .
[tex](\stackrel{x_1}{-7}~,~\stackrel{y_1}{-34})\hspace{10em} \stackrel{slope}{m} ~=~ 5 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-34)}=\stackrel{m}{ 5}(x-\stackrel{x_1}{(-7)}) \implies y +34= 5 (x +7) \\\\\\ y+34=5x+35\implies {\Large \begin{array}{llll} y=5x+1 \end{array}}[/tex]
These dot plots show the ages (in years) for a sample of sea turtles and a sample of sharks. Sea Turtles 00 000 to 0000 000 : 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Sharks 000000 : OO 00000 0000 000 OO o 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Age (in years) What are the differences between the centers and spreads of these distributions? Select two choices: one for the centers and one for the spreads. O A. Centers: The sea turtles have a lower median age than the sharks. B. Spreads: The ages of the sea turtles are more spread out. O C. Centers: The sea turtles have a greater median age than the sharks. O D. Spreads: The ages of the sharks are more spread out
Options C and D.
The median age of the Sea turtles is 55 while the median age of the sharks is 30, thus validating OPTION C
We can get the ranges of the two distributions to be:
Sea Turtles: 65 - 45 = 20
Sharks: 55 - 10 = 45
Sharks have a larger range, validating OPTION D
which costes more , a hamburger or a Chicken salad ? use. The vives princesa to write a n inequality that show your answer Hamburger $ 4.30, hot Dog $ 2.35, Chicken salad $ 4.49 pizza 2.49
Chicken salad costs more
Explanation:Cost of Hamburger = $ 4.30
Cost of hot Dog = $ 2.35
Cost of Chicken salad = $ 4.49
Cost of pizza = $2.49
$4.49 is greater than $4.30
Cost of of Chicken salad is greater than Cost of Hamburger
Hence, Chicken salad costs more
An inequality that shows the answer:
4.49 > 4.30
Monica has to solve the following problem: Warren travels 4,200 meters every hour. How far does he travel in four hours?
Which picture gives Monica all the information she needs to solve the problem?
Answer: A
Step-by-step explanation:
B is wrong A is right.