The SAT mathematics scores in the state of Florida for this year are approximately normally distributed with a mean of 500 and a standard deviation of 100

Using the empirical rule, what is the probability that a randomly selected score lies between 500 and 700? Express your answer as a decimal and round to 3 decimal places.

Answers

Answer 1

question: when do you take the SAT test


Related Questions

What is equivalent to 1 1/2

Answers

Answer:

1 1/2 is equal to 1.5.

Step-by-step explanation:

1/2 converted is .5.

A half of 1 is .5 or 1/2.

Answer: 1 1/2 is equal to 1.5.

Round the following number as indicated 106,513

Answers

Answer: i will put the answer as a comment but what are you rounding to

Step-by-step explanation:

Answer:

Depends on what you're round to. Read below.

Step-by-step explanation:

To the 100,000 place:

100,000

To the 10,000 place:

110,000

To the 1,000 place:

107,000

To the 100 place:

106,500

To the 10 place:

106,510

To the 1 place:

106,513

Find the product. 4x^3y(-2x^2y)

Answers

(4x + 3y)² =

(4x)² + 2 (4x) (3y) + (3y)² =

16x² + 24xy + 9y²

Find the diameter of each circle.

Answers

Answer:

Diameter Length: ( About ) 5.4 km; Option B

Step-by-step explanation:

~ Let us apply the Area of the Circle formula πr^2, where r ⇒ radius of the circle ~

1. We are given that the area of the circle is 22.9 km^2, so let us substitute that value into the area of the circle formula, solving for r ( radius ) ⇒ 22.9 = π * r^2 ⇒ r^2 = 22.9/π ⇒ r^2 = 7.28929639361.... ⇒

radius = ( About ) 2.7

2. The diameter would thus be 2 times that of the radius by definition, and thus is: 2.7 * 2 ⇒ ( About ) 5.4 km

Diameter Length: ( About ) 5.4 km

You are stacking wooden blocks (cubes) whose sides are all 1 1/4 inches how many blocks do you need to stack or build a block tower that is 7 1/2 inches tall

Answers

Answer: You need to stack 6 blocks to build the block tower.

Step-by-step explanation:

Hi, to answer this question we simply have to divide the tower's height (7 1/2) by the side length of the cubes (1 1/4).

Mathematically speaking:

7 1/2 ÷1 1/4 = (7x2+1) /2 ÷ (1x4+1)/4 = 15/2 ÷ 5/4 = (15x4) / (2x5) = 60/10 =6 cubes

You need to stack 6 blocks to build the block tower.

Feel free to ask for more if needed or if you did not understand something.

Which pair of symbols shows the correct signs for allordered pairs that are located in Quadrant II

Answers

Answer:

Quad II's Symbols are (-, +)

Step-by-step explanation:

                                  |

   Quad 2                  |          Quad 1

                                  |

                                  |

_______________________________

                                  |

       Quad 3              |        Quad 4

                                  |

                                  |

If a dress costs $27.00 when it is on sale for 10% off, what is its original cost?

Answers

29.07 if I’m not mistaken

The legs of a right triangle are represented by a and b, and the hypotenuse of the right triangle is represented by c. Which equation is not equivalent to the Pythagorean
Theorem? please answer fast

Answers

Answer:

the third one

Step-by-step explanation:

the hypotenuse cannot be gotten by subtracting the two shorter sides

What is an equation of the line that passes through the points (6,0) and (−1,−7)

Answers

Answer: y= 1x - 6

Step-by-step explanation:

(6,0)   (-1,-7)

0-(-7)= 7

6-(-1)= 7

7/7= 1  so the slope is 1 and we just need to find the y-intercept and we will do that by using the formula y= mx +b

-7= 1(-1) + b

-7= -1 + b

+1   + 1

b= -6    so the y-intercept is -6.

Answer:

y= 1x - 6

Step-by-step explanation:

just got it right!!: )

What is the mean of the data set below? Round to the nearest tenth when necessary. 18, 20, 24, 26, 32 *

Answers

Answer:

The answer is 24

Step-by-step explanation:

Add 18, 20, 24, 26, 32= 120

then divide by 5.

Dylan invested $7,200 in an account paying an interest rate of 2.3% compounded quarterly. Assuming no deposits or withdrawals are made, how much money, to the nearest dollar, would be in the account after 12 years?

Answers

Answer:

$9,481.01

Step-by-step explanation:

The formula for compound amounts is

A = P(1 + r/n)^(nt), where n is the number of compounding periods per year, t is the number of years, P is the initial amount invested and r is the annual interest rate as a decimal fraction.

Here,

A = ($7,200)(1 + 0.023/4)^(12*4)

Evaluating this we get:

A = ($7,200)(1.00575)^48, or

A  = ($7,200)(`1.3168) = $9,481.01

Answer:

9,481.01

Step-by-step explanation:

I broke my laptop sorry about the spots

Answers

Answer: [tex]3x^2-x+3[/tex]

Step-by-step explanation:

[tex](4x^2-x+6)-(x^2+3)[/tex]

Distribute the negative sign. This basically changes all the signs inside the parentheses.

[tex]4x^2-x+6-x^2-3[/tex]

Combine like terms;

[tex]3x^2-x+3[/tex]

What is important to keep in mind when selecting a sample?
a. The sample should be chosen based on specific criteria, such as the youngest students in the class.
b. The sample should be chosen at random so that it is fair.
c. The sample should consist of every person in the population being studied.
d. The sample size should always be exactly one person or piece of data.

Answers

Answer: b. The sample should be chosen at random so that it is fair.

Step-by-step explanation:

One of the most important things when selecting a sample is that the sample must be totally random if the sample is not random (for example, selecting only the youngest people in a group or things like that) there is a high probability that the sample will be biassed towards something, so the study may not be really accurate for all the population.

The correct option is b. The sample should be chosen at random so that it is fair.

The length and breadth of a rectangular shaped plot is 1215 m and 527 m respectively. Find its perimeter.

Answers

Answer:

3484m

Step-by-step explanation:

Perimeter of a rectangle= 2(L+B) where L= Length and B= Breadth

Length of the plot= 1215m

Breadth= 527m

∴ Perimeter of the plot= 2(1215m+527m)

                                       = 2(1742m)

                                       = 3484m

Hope this helps!!!

Bridget, Jim and Krutika share some sweets in the ratio 5:2:4. Bridget gets 40 sweets. How many did Krutika get?

Answers

Answer:

Krutika gets 32 sweets

Step-by-step explanation:

Let the number of sweets be x

Bridget= 5x sweets

Jim= 2x sweets

Krutika= 4x sweets

5x= 40; x= 40/5; x=8

Krutika gets 4x= 4×8

Krutika gets 32 sweets

Mrs. Kramer bought some markers at the school supply store, including 8 black
markers. 80% of all the markers she bought were black
How many markers did Mrs. Kramer buy in all?
A -28
B-10
C-20
D-16

Answers

im pretty sure its D :) sorry if im wrong!!

Answer:

The answer is 10

Step-by-step explanation:

PLEASE PLEASE PLEASE HELP WILL MARK BRAINLIEST

Answers

Answer:

1) Perpendicular

2) Parallel

3) Neither

4) Neither

Step-by-step explanation:

Answer:

1. Perpendicular

2. Parallel

3. Neither

4. Neither

Step-by-step explanation:

Perpendicular lines intersect at 90 degree angles

Parallel lines are lines that are straight and don't meet.

Solve the equation.
5x + 8 - 3x = -10
x = -9
x = -1
оооо
X = 1
O x= 9

Answers

Answer:

x = -9

Step-by-step explanation:

5x + 8 - 3x = -10

Combine like terms

2x +8 = -10

Subtract 8 from each side

2x+8-8 = -10-8

2x = -18

Divide each side by 2

2x/2 = -18/2

x = -9

the answer is x=-9!!!

Grace has $81 in her bank account and deposits $68 per month into her account. Jasmine has $53 and deposits $75 per month into her account. Enter the number of months it will take for both Grace and Jasmine to have the same amount of money in their accounts.

Answers

Answer:

4 months

Step-by-step explanation:

Let the number of months that they deposit into their accounts be m.

Grace has $81 in her bank account and deposits $68 per month into her account. This means that after m months, she will have:

81 + 68m

Jasmine has $53 and deposits $75 per month into her account. This means that after m months, she will have:

53 + 75m

To find the number of months it will take for them to have the same amount, we equate the amount that they each have:

81 + 68m = 53 + 75m

Collect like terms and simplify:

81 - 53 = 75m - 68m

28 = 7m

=> m = 28 / 7 = 4

It will take 4 months for them to have the same amount.

Answer should be in Polynomial in standard form.
(x-3)(x-4)

Answers

X^2-7x+12 because when you distribute its
X*X +
(X*-4)+(x*-3) +
-3*-4

Answer:

x² - 7x + 12

Step-by-step explanation:

(x - 3)(x - 4)       FOIL

x²- 4x - 3x + 12     Combine like terms

x² - 7x + 12

Zach wants to buy a new movie for $25. He already has $11 saved and his mom will give him $2 for each chore he does. What is the least amount of chores Zach will have to do in order to save enough money for the movie.

Answers

Ok this is very simple


First you do 25-11 which Is 14


And it says he gets 2 dollars for every chore he does and he needs the remaining 14 dollars so now your gonna do 14 divide 2 which is 7 which is the least amount of chores he has to do


7
The least amount of chores Zach will have to do is 7.


A regular hexagon and a regular octagon are joined as shown on the diagram

Work out the size of angle x

Answers

Answer:

x = 105°

Step-by-step explanation:

The shape above is a regular hexagon and a regular octagon the both of them have the same interior angle through out. For a polygon to be regular all it interior angle are the same .

sum of interior angles of a polygon = (n - 2)180°

where

n = number of sides

Therefore,

sum of interior angle of a hexagon = (6 - 2)180

sum of interior angle of a hexagon = (4)180

sum of interior angle of a hexagon = 720

each angle of a regular hexagon = 720/6 = 120°

sum of interior angles of an octagon = (8- 2)180

sum of interior angles of an octagon = (6)180

sum of interior angles of an octagon = 1080

each angle of a regular octagon = 1080/8 = 135°

All the angle around a point add up to 360°. So if we take the interior angle from 360° we will get angle x

360 - (135° + 120°)

360 - 255

x = 105°

Answer:

105

Step-by-step explanation:

Dreg earns $6.80 per hour. On Saturday he worked from 9:00 A.M.
to 3:30 P.M. How much did he earn?

Answers

Answer:

$44.20

Step-by-step explanation:

First, calculate how many hours he worked. From 9:00am-3:30pm he worked 6.5 hours. We're going to multiply the hourly rate, $6.80 by how many hours he worked. Since he also worked an extra half hour and not a full hour we're going to divide $6.80 by 2. Then add both of the calculations up to get the asnwer.

6.8(6)=40.8

6.80/2=3.4

40.8+3.4=44.2

He earned $44.20.

Quadrilateral A^ prime B^ prime C^ prime D^ prime is the image of quadrilateral ABCD under a rotation about point Q
A: -90
B: -60
C: 60
D: 90

Answers

When a shape is rotated, it must be rotated through a point.

The rotation from [tex]ABCD[/tex] to [tex]A'B'C'D'[/tex] is (d) [tex]90^o[/tex]

To determine the angle of rotation from [tex]ABCD[/tex] to [tex]A'B'C'D'[/tex], we use the following steps

Connect a point and the image of the point to the center of rotation.Measure the angle at the point of rotationDraw an arrow from [tex]ABCD[/tex] to [tex]A'B'C'D'[/tex] to determine the direction of rotation.

See attachment for illustration.

From the attached image;

We draw A and A' to point QThen we measure the angle at Q; this gives [tex]90^o[/tex].The arrow from [tex]ABCD[/tex] to [tex]A'B'C'D'[/tex] indicates a clockwise direction

Hence, the angle of rotation is D: 90

Read more about rotations at:

https://brainly.com/question/1571997

Find the surface area of the prism. 10m 15m 16m 17m 17m

Answers

is it a rectangular prism

Which statement is true about the difference 2 square root of 7 − square root of 28 ?

Group of answer choices

A) It is rational and equal to −2.

B) It is rational and equal to 0.

C) It is irrational and equal to −2 square root of 7 .

D) It is irrational and equal to square root of 7 .

Answers

I'll go slow:

[tex]2\sqrt 7 - \sqrt{28}[/tex]

[tex]=2 \sqrt 7 - \sqrt{4 \cdot 7}[/tex]

[tex]=2 \sqrt 7 - \sqrt{4} \cdot \sqrt{7}[/tex]

[tex]=2 \sqrt7 - 2 \sqrt 7[/tex]

[tex]=0[/tex]

Answer: B  rational and equal to 0.

Someone please help me

Answers

Step-by-step explanation:

-12.6x - 4.9x = -154

-17.5x = -154

17.5x = 154

x = 154/17.5

x = 8.8

#CMIIW

Multiply this problem 2/7 x 21

Answers

Answer:

6

Step-by-step explanation:

2/7 times 21 equals 6. Next time, don't ask as a brainly question and use calculator so you don't waste/lose your points.

Hope this helps!!! PLZ MARK BRAINLIEST!!!

How many equivalent fractions can I make in order to be the same answer to 2/3

Answers

Answer:

Technically there's an infinite number of equivalent fractions for 2/3 but to list a few 4/6, 6/9, 8/12, 12/18, 18/27.

Step-by-step explanation:

Hope this helps!

-MoCKEry

the difference between 8 forty-sevens and 5 forty-sevens

Answers

Answer:

8 40/7 - 5 40/7 = (56 + 40)/7 - (35 + 40)/7 = 96/7 - 75/7 = 21/7 = 3

Hope this helps!

:)

Answer:

8 40/7 - 5 40/7 = (56 + 40)/7 - (35 + 40)/7 = 96/7 - 75/7 = 21/7 = 3

Hope this helps!

:)

Step-by-step explanation:

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