A certain standardized tests math scores have a bell-shaped distribution with a mean of 530 and a standard deviation of 105. Complete part (a) through (c). (a) what percentage of standardized test scores is between 215 and 845. (b) what percentage of standardized test scores is less than 215 or greater than 845. (c) what percentage of standardized test scores is greater than 740.

Answers

Answer 1
It’s C because I guess to get more points to answer questions

Related Questions

Kayla left a pile of gummy bears in the sun. After several hours 12 melted. This accounted for 40% of the total number. How many gummy bears did she leave in the sun?

Answers

she left 30 gummy bears

Answer:

please find attached pdf

Step-by-step explanation:

Which statement best explains the relationship between
lines AB and CD?
They
Le
parallel because their slopes are equal.
They are parallel because their slopes are negative
reciprocals.
They are not parallel because their slopes are not
equal.
They are not parallel because their slopes are
negative reciprocals.

Answers

Answer:

A. parallel because their slopes are equal.

Step-by-step explanation:

because parallel means matching

meaning they have the same slope

Collectively, what are the interest costs and other fees for using a credit card called? A. balance B. credit line C. finance charge Reset Next​

Answers

The correct answer is C. Finance charge

Explanation:

A credit card is a service offered by financial entities such as banks that allows customers to buy goods and pay them later. This implies the customer does not immediately for goods but pays for these after a specific time. The use of this benefit implies related costs such as fees for the use of the credit card, and interest costs (money charged for borrowing the money from the bank), which are known as finance charge or the money charged for the benefit of using credit. According to this, the correct answer is C.

The data set shows how many points mark scored in each basket ball game he played this seasons. 1,4,4,5,5,8,8,10,11,11,14,15,16

Answers

Answer:

Mean: 8.62

Median: 8

Step-by-step explanation:

I'm guessing that what you need is the mean or median so

1+4+4+5+5+8+8+10+11+11+14+15+16=112

112/13=8.62

Mean: 8.62

Median: 8

all combined is 112, the mean should be 8.62 and median 8

Does anyone knows how much is 3x X x? Plz help

Answers

because it’s x times x it would be 3x^2

Find the rational zeros of 2x3 + 3x2 – 11x - 6

Answers

Answer:

(2x+1)(x−2)(x+3)

Step-by-step explanation:

2x3+3x2−11x−6

2x3+3x2−11x−6

=(2x+1)(x−2)(x+3)

Answer:

-1/2

2

-3

Step-by-step explanation:

Paul makes 6 stacks of cans on a shelf in his kitchen. He puts 2 cans in each stack. Which equation and answer show the total number of cans?

Answers

If there are 6 stacks with 2 cans in each stack, then you would times 6 x 2 = 12

I’ll give 30 points PLEASE HURRY Find the slope of the given ordered pairs: (-1,5) (2,-4)

Answers

Answer: 2/3

Step-by-step explanation:

Answer:

m=−3

Step-by-step explanation:

2y = x - 4
4x + 3y = 5

Answers

Answer:

the answer is, {x,y} ={2,1}

Step-by-step explanation:

1) 4x - 3y = 5     2) x + 2y = 4   3) 4•(-2y+4) - 3y = 5     4) - 11y = -11                         5) 11y = 11   y = 1    6)   x = -2y+4 y = 1    7)   x = -2(1)+4 = 2 = {x,y} = {2,1} !!!

Please answer ASAP!

Which proportional relationship has the greatest rate of change?

Answers

Answer:

Option (1)  ;   y = 7x

Step-by-step explanation:

(1) reads y = 7x, a line with slope 7, therefore the rate of change in this is 7

(2) says that y increases 12 units every time that x increases 4 Then the rate of change is: (increase in y / increase in x = 12/4 =3

(3) shows a table from which we can see that an increase of y in 8 corresponds to an increase of x in 2:  rate of change = (8 - 0) , (2 - 0) = 4

(4) shos a line with slope (rate of change) given by:  (12 - 0) / (2 - 0) = 12/2 = 6

Therefore, the greatest rate of change is shown by the first expression  

y = 7 x

Lillian and Isabella went shopping for school supplies. Lillian found her favorite notebook on sale so she bought three of the exact same notebook. Isabella also wanted a notebook. She bought one of the same notebooks that Lillian bought. Both girls started shopping with the same amount of money. If Lillian spent all of her money and Isabella had $5 left, how much money did each girl have when she arrived at the store? please show your work/steps​

Answers

Answer:

Each girl had $7.50 when they arrived.

Step-by-step explanation:

We have to figure out what c (cost of each notebook) is first before we find out how much money each girl had. We also know they have the same money, so both sides are connected. The equation should be: 3x = x + 5.

3x = x + 5

First, subtract x from both sides. This cancels out the addition by x.

3x - x = 5

Now, subtract x from 3x. This equals 2x.

2x = 5

To cancel out the multiplication by 2, divide both sides by 2.

x = 5/2

Lastly, divide 5 by 2 to get 2.5.

x = 2.5

Substitute x for 2.5 in the earlier equation (3x = x + 5)

3(2.5) = 2.5 + 5

First, multiply 3 by 2.5 to get 7.5.

7.5 = 2.5 + 5

Add 2.5 to 5 to get 7.5.

7.5 = 7.5

Both sides are equal so we have our answer. So, both girls had $7.50 when they arrived at the store.

Один острый угол прямоугольного треугольника равен 30".
Найдите угол между высотой и биссектрисой, проведенными
из вершины прямого угла ​

Answers

Answer:

speak English I don't understand your letter?and what your question?

what is the answer?

Answers

C because 3x is three times x and it equals 3x^2

Answer:

I think it is C. Hope this helps!!! PLEASE MORK ME AS BRAINLYEST PLEZZZ

What is the answer to Rx+12r+8r

Answers

Answer: Rx + 20r

Step-by-step explanation:

4) 4x + 3y = 56
2x + y = 24
Solve using elimination please show work

Answers

Answer:

x = 8     y = 8

Step-by-step explanation:

Multiply 2nd equation by -3 to get -6x - 3y = -72

Now  4x + 3y = 56

         -6x - 3y = -72

         -2x      =  -16

            x = 8

Substitute x = 8 into the 2nd equation

2(8) + y = 24

16 + y = 24

y = 8

Check:  Substitute the values into the 1st equation

4(8) + 3(8) = 32 + 24 = 56  So we have the correct values for x and y

A number increased by 20% becomes 227. what is the number?

Answers

Answer: I think it's 272.4

Step-by-step explanation: hope it helps thx for the free points :)

what is the mean average of these five number [2,4,5,6,8]​

Answers

Answer:

5

Step-by-step explanation:

Add each number up and then divide by how many numbers there are in this set (5)

2+4+5+6+8=25

25/5=5

What is the percent increase from 40 to 64

Answers

Answer:

60 percent

Step-by-step explanation:

Where: 40 is the old value and 64 is the new value. In this case we have a positive change (increase) of 60 percent because the new value is greater than the old value.

How many solutions does y - 13 =5x
Y - 5x =12
Show all work

A no solution
B one solution
C infinity solutions

Answers

9514 1404 393

Answer:

  no solutions

Step-by-step explanation:

Subtract the second equation from the first:

  (y -13) -(y -5x) = (5x) -(12)

  5x -13 = 5x -12 . . . . . . simplify

  0 = 1 . . . . . . . . . . . . . . .add 13-5x to both sides

No value of the variable will make this statement true.

There is no solution.

Wheel I has diameter 24.9 in. Wheel II has diameter 21.0 in. Round the diameter of each wheel to the nearest inch. About how much farther will Wheel I travel in one​ rotation? Use 3.14 for π.

Answers

Answer:

76

Step-by-step explanation:

because the other guy said so



(c) One lorry travels from your town to another town. The lorry reaches a top speed
of 90 km/h, but its average speed between the towns is only 66 km/h.
Why is the average speed less than the top speed?

Answers

Answer:

The average speed is 24 km/h less than the top speed of the lorry.

Step-by-step explanation:

The top speed of the lorry is the highest speed reached during transit, while its average speed is the mean speed attained

Given:.

Top speed of the lorry = 90 km/h

Average speed of the lorry = 66 km/h

Then,

The difference between the speed reached = top speed - average speed

                                            = 90 - 66

                                            = 24 km/h

Therefore, the average speed is 24 km/h less than the top speed of the lorry.

The equation shows the relationship between x and y. Y=7×+9. What is the slope of the equation

Answers

Answer:

m=7

Step-by-step explanation:


Question 1
Use the following information to answer the question.
A laundry basket has 24 t-shirts in it. Four are navy,
12 are red, and the remaining are white.
1 point
1. What is the probability of randomly selecting a red shirt

Answers

Answer:

The probability is 1/2.

Step-by-step explanation:

There are 24 T-shirts in total and 12 is half of 24, the probability is 1/2.

I'm not sure about answer...

The probability of randomly selecting a red shirt is 50%.

Step-by-step explanation:

To figure this out, separate the total number of shirts into fractions based on the color. So for example, it would look something like this: Navy shirts are 4/24, Red shirts are 12/24, and White shirts are 8/24. The probability for each of the colors would be; Navy-16.666 percent, Red-50 percent, White-33.333 percent. Since we are only looking for the probability of selecting a Red shirt, the probability would be 50%.

what is the scale factor of triangle abc and triangle def​

Answers

Answer:

The answer is 6

Step-by-step explanation:

ABC is 72, 66, 42 and DEF is 12, 11, 7

simply divide the largest shape measurements by the smaller one.

72÷12

66÷11

42÷7

you get 6 in all of them, this technique may not work all the time.

What are the mathematical names for these shapes?

Answers

The mathematical names of the given figures are:

a. square pyramid

b. sphere

c. cube

d. triangular pyramid

What are Mathematical Names of Shapes?A pyramid has four triangular faces and a base that is usually a square. For example, figure A in the diagram is a square pyramid.A sphere is a three-dimensional shape that has a round, ball-like shape. Figure B is an example of a sphere.A cube is a three dimensional shape that has 6 square surfaces. An example of a cube is the shape in figure C. The shape in figure D is a triangular pyramid having a triangular base.

Thus, the mathematical names of the given figures are:

a. square pyramid

b. sphere

c. cube

d. triangular pyramid

Learn more about shapes on:

https://brainly.com/question/28008161

#SPJ1

10/11 x 7/9 x 1/2 help meh!

Answers

Answer:

35/99 or .35 repeating

Step-by-step explanation:

just multiply

Answer:

35/99

Step-by-step explanation:

Multiply and you'll get 35/99 0.35 with a line above 35 which means repeating

Alexa bought 3 umbrellas for a total of $18. What was the unit rate for each umbrella?

Answers

6 because you divide 18/3 =6

5/12+8/12 I need help

Answers

[tex]\frac{13}{12}[/tex] is the answer

Hope this helps

1 1/12 because 8+5=13 13/12= 1 1/12

Which of these numbers is equivalent to n n in this equation?

10 1/6 − n = 4 5/12

A: 6 4/6
B: 5 4/6
C: 5 3/4
D 5 1/12

Answers

Answer:

The answer is C

Step-by-step explanation:

5 3/4 + 4 5/12 is 10 1/6

Your answer will be C. 5 3/4

PLEASE HELP ME match the equations at the bottom of the screen to the graph.TYSM

Answers

Answer: It's given in the equations.

Step-by-step explanation:

First One

f(x) = -2^x

Second

f(x) = -4(2)^x

Third

f(x) = 4(2)^x

Fourth

f(x) = 2^x

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