PLEASE HELP!!!

Find P15, which is the IQ score separating the bottom 15% from the the top 85%. Assume the scores are normally distributed with a mean of 100 and a standard deviation of 15.

A. 82.5 B.83.3 C.84.0 D.84.6

PLEASE HELP!!! Find P15, Which Is The IQ Score Separating The Bottom 15% From The The Top 85%. Assume

Answers

Answer 1
C .84 because 85 minus one is 84

Related Questions

HELPPPP FIND THE AREA

Answers

you can just split the figure in 2 separate figures and them add the areas:

area rec. 1:

3m×3m= 9m²

area rec. 2:

3m× (2m+3m)

= 3m×5m

=15m²

total area:

9m²+15m²= 24m²

Answer:

Area = 24

Step-by-step explanation:

Work and explanation ~

help brainliest if right

Answers

Answer:

8

Step-by-step explanation:

Answer:

the answer is 8

PLEASE GIVE BRAINLIST

Please hurry... Have a blessed day!

Answers

Answer:

A

Step-by-step explanation:

divide all sides by four and you get first answer.

Number A
divide every side by 4, and you get the results

Use the discriminant to determine how many and what kind of solutions the quadratic equation x^2 - x = 1 has.


1. no real or complex solutions

2. two complex (nonreal) solutions

3. one real solution

4. two real solutions

Answers

Answer:

4. two real solutions

Step-by-step explanation:

[tex]x^2 - x = 1[/tex] (Given)

[tex]\implies x^2-x-1=0[/tex]

Equating it with [tex]ax^2+bx+c=0[/tex]We find: a = 1, b = -1, c = -1Next, we calculate the discriminant of the given quadratic equation by plugging the values of a, b and c in the formula [tex]\implies b^2-4ac[/tex]

[tex]b^2-4ac\\=(-1)^2-4(1)(-1)\\=1+1=2>0\\\implies b^2-4ac >0[/tex]

-> Given quadratic equation has two real solutions.

A skateboarder leaves a 12-foot tall ramp with an initial vertical velocity of 8 feet per sen
function f(h) = -8t² +8t + 12 represents the height, h, in feet of the skateboarder after t seconds.
How many seconds was the skateboarder airbound

Answers

To answer this, we substitute 12 ft to the f(h) in the given equation,   
f(h) = -8t² + 8t + 12 = 12

Subtracting 12 from both sides of the equation will give us an answer of,

-8t² + 8t = 0

Then, we transpose 8 to the other side and divide the equation by -8 and t, we get an answer of t = 1 second. 

Answer:

Below in bold.

Step-by-step explanation:

When he lands h = 0  so

-8t^2 + 8t + 12 = 0

Solving for t

t = [-8 +/- sqrt(8^2 - 3*-6*12)] / -16

t = 1.82 seconds.

how do i do 15, 16???

Answers

It's very long so I'm not giving answers but here's how i would do it:use Pythagoras [tex]a^2 +b^2 = c^2[/tex] where c is the longest sideuse sine rule [tex]\frac{a}{sin(A)} = \frac{b}{sin(B)} = \frac{c}{sin(C)}[/tex] where lower cases are the sides, and capitals are their opposite angles.

e.g for 15:

a = 3, b is missing, c = 10

A is missing, B is ?, C is 90

A box contains ten cards labeled Q,R,S,T,U,V,W,X,Y, and Z. One card will be randomly chosen. What is the probability of choosing a letter from Q to T?
Write your answer as a fraction in simplest form.

Answers

Answer:

4/10 = 2/5 = 40%

Step-by-step explanation:

Q,R,S,T = 4

Q R S T U V W X Y Z =10

Solve the equation on the
interval [0, 27r).
4(sin x)2 - 2 = 0

Answers

[tex]4[sin(x)]^2 - 2 = 0\implies 4[sin(x)]^2=2\implies [sin(x)]^2=\cfrac{2}{4}\implies [sin(x)]^2=\cfrac{1}{2} \\\\\\ sin(x)=\pm\sqrt{\cfrac{1}{2}}\implies sin^{-1}[sin(x)]=sin^{-1}\left( \pm\sqrt{\cfrac{1}{2}} \right)\implies x=sin^{-1}\left( \pm\sqrt{\cfrac{1}{2}} \right)[/tex]

[tex]x=sin^{-1}\left( \pm\cfrac{\sqrt{1}}{\sqrt{2}} \right)\implies x=sin^{-1}\left( \pm\cfrac{1}{\sqrt{2}} \right)\implies x=sin^{-1}\left( \pm\cfrac{\sqrt{2}}{2} \right) \\\\[-0.35em] ~\dotfill\\\\ ~\hfill x=\cfrac{\pi }{4}~~,~~\cfrac{3\pi }{4}~~,~~\cfrac{5\pi }{4}~~,~~\cfrac{7\pi }{4}~\hfill[/tex]

Check the picture below.

olve the following: (2 points)

one and two fourths plus three and three fourths

a
two and one fourth
b
four and one fourth
c
five and one fourth
d
six and one fourth

Answers

It is C five and one fourth

A line passes through the pointa (-8,8) and (12,7)

Answers

Answer: y= -1/20x + 38/5

or

y= -1/20x + 7.6

Step-by-step explanation:

y-y1 = m(x-x1)

m = 8-7 / -8 - 12 = 1/-20 = -1/20

y-8 = -1/20(x+8)

y=-1/20x - 8/20 + 160/20

y= -1/20x + 38/5

or

y= -1/20x + 7.6

Which of the following statements is always true?
a. Workers being paid on commission make less money than if they are salaried.
b. Workers being paid on commission have a salary that varies based on their performance.
c. Workers being paid on commission are stressed over the amount of earnings they will have.
d. Workers being paid on commission increase the accounting costs of the employer.
Please select the best answer from the choices provided
A
B
C
D

Answers

Answer:

B

Step-by-step explanation:

hope it helps <3333

You look beautiful

Which is a coefficient matrix for the system of linear equations?

Answers

Answer:

In linear algebra, a coefficient matrix is a matrix consisting of the coefficients of the variables in a set of linear equations.

Step-by-step explanation:

the matrix is used in solving systems of linear equations

What is the last step in constructing an angle?
O Make a mark at the number of degrees you want the angle to be.
O Place the center of the protractor on the endpoint of the ray, and line up the ray with the zero line of the protractor
O Connect the endpoint and the mark at the angle measure.
O Draw a horizontal ray.

Answers

Answer:

O Connect the endpoint and the mark at the angle measure

Step-by-step explanation:

Check the illustration for more details.

please answer, thank you so so so so so so so so much!

Answers

Answer:

A = 160 in²

Step-by-step explanation:

Split this up into 3 rectangles and find the area of each (A = bh). Then add up all the areas to get the total area of the figure.

Rectangle A

A = 10 x 7

A = 70 in²

Rectangle B

A = 11 x 6

A = 66 in²
Rectangle C

A = 4 x 6

A = 24 in²

Total Area

A = 70 + 66 + 24

A = 160 in²

Hope this helps and God bless!

Answer:

160

Step-by-step explanation:

Do (6x4)+(6x18)+(7x4)

You don't need to put the parentheses but it makes it look better and make it easier to understand.

help me out on this..

Answers

Answer:

The answer would be to shade 2 parts as 10 percent of 20 is 2.Hope this helps!

Step-by-step explanation:

Solve for x in the diagram below.


Answers

The angle in its entirety is 90 degrees and you are given one portion of it which is 35 degrees. You can subtract 35 from 90 which equals 55. Then solve for x in 5x=55, which is essentially 55 divided by 5. X will equal 11. :)

Tell me the answer please 1+2-3+4-5+6-7+8-9=

Answers

Answer:

1+2-3+4-5+6-7+8-9=3-3+4-5+6-7+8-9=-1+6-7+8-9=5-7+8-9=6-9=-3

Step-by-step explanation:

Answer: 45

Step-by-step explanation: Add all the digits

solve for x : -172 = -11x + 4

Answers

Answer:

16

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

Alright so:

-172 = -11x + 4

-4 - 4 (-4 on both sides)

so,

-176 = - 11x

divide by -11

so,

-11x ÷ - 11 = x

-176÷-11= 16

x=16

i really need help ASAP

Answers

Answer:

B

Step-by-step explanation:

2q+437= 931

subtract 437

2q= 494

divide by 2

q= 247

x – 7y + x + y answer

Answers

Answer:

2x - 6y

Step-by-step explanation:

Combine like terms

(x) - 7y + (x) + y

2x - 7y + y

Combine like terms again

2x - (7y) + (y)

2x - 6y

Hope this helps!

It’s 2x-6y

Hope this helps

find the slope of the line that passes through (8,2) (1,8)

Answers

Answer:

slope = -6/7

all steps in picture :)

an equation for 72th term in 4,7,10,13

Answers

Answer:

[tex]\huge\boxed{\bf\:Equation: a_{72} = 4 + (72 - 1)3}[/tex]

[tex]\huge\boxed{\bf\:a_{72} = 217}[/tex]

Step-by-step explanation:

Let the series be: 4, 7, 10, 13,.....

Given,

First term (a) = 4Common difference (d) = [tex]a_{2} - a_{1} = 7 - 4 = \bf\:3[/tex]Number of terms (n) = 72[tex]72^{nd}[/tex]  term of the series ([tex]a_{72}[/tex]) = ?

We know that,

[tex]\bf\:a_{n} = a + (n - 1)d[/tex]

Equation for the [tex]72^{nd}[/tex] term of the series,

[tex]\boxed{\bf\:a_{72} = 4 + (72 - 1)3}[/tex]

By using this formula & substituting the values,

[tex]a_{72} = 4 + (72 - 1)3\\a_{72} = 4 + (71)3\\a_{72} = 4 + 213\\\boxed{\bf\:a_{72} = 217}[/tex]

•°• The [tex]72^{nd}[/tex] term of the series is 217.

[tex]\rule{150pt}{2pt}[/tex]

A rectangular prism has dimensions x units, 2x units, and x 8 units. which expression represents the surface area of the prism? 8x 16 square units 16x 32 square units 10x2 48x square units 2x3 16x2 square units

Answers

The rectangular prism with dimensions x units, 2x units, and x- 8 units has a surface area of 10x^2 - 48x square units

Volume of a rectangular prism

The formula for calculating the suface area of rectangular prism is expressed as:

A =2()

lw + wh + lh

where:

l is the lengthw is the widthh is the height

Given the following parameters

l = x units

w = 2x units

h = x -  8 units

Substitute

S = 2(2x^2 + x^2 - 8x + 2x^2 - 16x)

S = 2(5x^2-24x)

S= 10x^2 - 48x square units

Hence the rectangular prism with dimensions x units, 2x units, and x- 8 units has a surface area of 10x^2 - 48x square units

Learn more on surface area here:https://brainly.com/question/76387

Answer:

C

Step-by-step explanation:

10x^2+48x

Tell whether the ordered pair is a solution of the linear system.

(4, -1)
x + 2y = 2
x - 2y = 6 ​

Answers

Answer:

(4,-1) is a solution

Step-by-step explanation:

x + 2y = 2

x - 2y = 6

We want to see if (4,-1) is a solution to the system.

To do so we plug in x = 4 and y = -1 into both equations and if it is true then the ordered pair is a solution but if one of the equations isn't true then the solution isn't a solution

x + 2y = 2

==> plug in x = 4 and y = -1

4 + 2(-1) = 2

==> multiply 2 and -1

4 - 2 = 2

==> subtract 2 from 4

2 = 2

x - 2y = 6

==> plug in x = 4 and y = -1

4 - 2(-1) = 6  

==> multiply -2 and -1

4 + 2 = 6

==> add 4 and 2

6 = 6

Both equations are true therefore (4,-1) is indeed a solution to the system

Find the surface area of the triangular prism shown below.

Answers

Answer:

136

Step-by-step explanation:

5*7 = 35

5*7 = 35

4*6/2 = 12

4*6/2 = 12

7*6 = 42

Add them all up

Which of the following is an equivalent expression to the expression a1/3 / a1/4

A. A1/12

B. A7/12

C. 1/1/1/a12

D. 1/7/a12

Answers

Answer:

Option A :- [tex] \sf {a}^{\frac{1}{12}} [/tex]

Step-by-step explanation:

[tex] \hookrightarrow \sf \: \frac{ {a}^{ \frac{1}{3} } }{ {a}^{ \frac{1}{4} } } [/tex]

Simplify the expression

[tex] \hookrightarrow \sf \: {a}^{ \frac{1}{3} - \frac{1}{4} }[/tex]

Transform the Expression

[tex] \hookrightarrow \sf \: {a}^{ \frac{4 - 3}{12} }[/tex]

Calculate

[tex] \hookrightarrow \sf {a}^{\frac{1}{12}} [/tex]

You want to know the average number of goals scored by professional hockey players. Should you survey the population or a sample?

Answers

Answer:

Populaiton

Step-by-step explanation:

Surveying the population will give a more accurate data set as the sample size could be biased based on the characteristics of specific players.

In a box there are 11 similar balls where 8 are red and the remaining are blue. if we draw one ball at random.then what is the probability to draw a blue ball?

Answers

Answer:

27%

Step-by-step explanation:

There are 11 balls in total. If 8 are red, (11-8) are blue =3

3/11 is the fraction of blue balls. Convert to percent =27%

Kim caught a fish that was 9/10 of a meter long. Doug caught a fish that was 2/3 as long as kim's fish

Answers

Kim caught a fish that was 9/10 of a meter long. Doug caught a fish that was 2/3 as long as Kim's fish. So, Doug caught a fish that was 3/5 meters long.

What is the fundamental principle of multiplication?

If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways

Kim caught a fish that was 9/10 of a meter long. Doug caught a fish that was 2/3 as long as Kim's fish.

Kim caught a fish of length = 9/10 m

Doug caught a fish of length = 2/3 as long as Kim's fish.

                                                 = 2/3 x 9/10

                                                 = 18 / 30

                                                 = 3/5

Thus, Doug caught a fish that was 3/5 meters long.

Learn more about multiplications;

https://brainly.com/question/14059007

The table shows survey results for 200 patients who had either hip or knee surgeryIf one person is selected randomly, what probability he or she was satisfied, given that he or she had knee surgery? (Round to the nearest tenth of a percent.)

Answers

Answer:

Step-by-step explanation:

Answer:

B. 73.7%

Step-by-step explanation:

Usa Tesprep explained

Other Questions
What word or phase best completes this sentence -es un documento de identification 120 90 x= i need help with thiss!!! 3. A ____ is sometimes a rectangle.A. parallelogramB. rhombusC. squareD. trapezoid You have been appointed as a manager at XTZ company. Your style of leading is an Autocratic style. this is a style where you take strict controls and actions over all management activities. the old culture that was present at XTZ company was very flexible due to the nature of old manager and all employees are now resisting to adjust to the new manager.Explain how are you going to solve this matter as a manager PART A:Which of the following best identifies the theme of the poem Marina has $145 to spend. She spends $68. 50 on jeans. T-shirts cost $12. 75. Write and solve an inequality to find the greatest number of t-shirts she can buy Wyke next attached wires to the exposed cable probably with alligator clips and began to draw power from the cables. once again, the work called for a deft hand. if he drew off too much power, the soviets would be sure to notice it. as expected, wyke did a masterful job, and the tapping began on may 11, 1955. the dark game, paul janeczko read the passage. then use the drop-down menus to answer the questions. what is the tone of the passage? imagine that the word masterful in the last sentence were changed to good. how would the tone of the sentence change? `y=-x+5` `x-y=1` what the anwers What is the lateral area and the surface area? bro some one helpp lol 17 - q = 6 n-31/4 = 2 1 + 2r = 35 42 + 5t = 8t 4p - 3 = 17 Which is a true statement about the following chemical formula?2(C6H12O6)A.The formula is a molecule but not a compound B.There are 18 molecules in this formula C.There are 2 molecules in this formula Calculate the length below labeled x Image abovePlease help me with this ill give you brainlist answer Black American men were granted suffrage before American women.True False Simplify the expression. in your opinion do you think raising the minimum wage is a good thing or a bad thing. The biological agent that attaches itself to healthy cells is called a virus. True or false? In order to determine the distance between two cities on a map, which map feature would a student have to use? how many sides does a quadrillateral have Which strategy will most decrease the number of people sickened by water-borne diseases?(1 point) increased use of fungicides increased use of fungicides improved agriculture improved agriculture increased use of solar power increased use of solar power better sanitation systems What happened at the peace conference between the U. S. Gov-ernment and the Seminoles in 1837?Seminole leader Osceola was captured by the Americans and helater died in prisonBThe Seminoles overtook the U. S. Soldiers with a surprise attack. en BoxThe two signed a peace treaty. DU. S. Soldiers shot Seminole leader Osceola.