The time required to play a new video game is normally distributed. If the mean time to play this game is 23.5 hours with a standard deviation of 1.7 hours, what is the probability that a player will complete this game in between 21.8 and 25.2 hours?
47.72%
99.74%
68.24%
95.44%

Answer:

r = t + q - s

Step-by-step explanation:

t = r - q + s

goal is to isolate the variable

add q to both sides (this cancels the q out on the right side)

t + q = r - q + q + s

t + q = r + s

subtract s from both sides

t + q - s = r + s - s

t + q - s = r

In other words:

r = t + q - s

Answer: 0.75?

Step-by-step explanation:

This might be wrong but, you cross multiply and then divid by one hundred.

5         x.             100x    75 / 100

100.   15

Answer:

the answer is 33 1/3%

Step-by-step explanation:

I took the test

Answer:

8 quarters and 4 dimes

Step-by-step explanation:

4 quarters = 1 dollars

4 quarters = 1 dollars

4 dimes = 40 cents

2.40$

============================================

Work Shown:

d = number of dimes

q = number of quarters

1 dime = 10 cents

d dimes = 10d cents

1 quarter = 25 cents

q quarters = 25q cents

d+q = 12 since we have 12 coins total

q = -d+12 after solving for q

10d+25q = total value in cents

10d+25q = 240

10d+25(-d+12) = 240 ... plug in q = -d+12

10d-25d+300 = 240

-15d+300 = 240

-15d = 240-300

-15d = -60

d = -60/(-15)

d = 4

q = -d+12

q = -4+12

q = 8

Since d = 4 and q = 8, this means we have 4 dimes and 8 quarters

-----------------------------

Check:

4 dimes = 4*10 = 40 cents

8 quarters = 8*25 = 200 cents

(4 dimes) + (8 quarters) = (40 cents) + (200 cents) = 240 cents

240 cents = 240/100 = $2.40

We have 4+8 = 12 coins total

The answers are confirmed

Answer:

1. C

2. B

3. D

4. A

Step-by-step explanation:

1. As mentioned in the last sentence of the passage, the main goal of the problem is to figure out how long it took John to get ready.

2/3/4. The goal is to find the amount of time John took to get ready and to obtain that time you need to use 6:10-5:30=n. After solving the number sentence, you should get 40 minutes.

Answer:

16 yd²

Step-by-step explanation:

The total surface area is the sum of the area of the square base and the 4 triangular sides.

SA = s² + 4 × bh/2

SA = (2 yd)² + 4 × (2 yd)(3 yd)/2

SA = 4 yd² + 12 yd²

SA = 16 yd²

Answer:

16

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

It’s in the form y=mx+b

b is the y intercept

Answer:

If a negative number is multiplied with a positive number, the result will be negative. If two positive numbers are multiplied, the result will be positive. If two negative numbers are multiplied, the result will also be positive.

Step-by-step explanation:

Answer:

5 inches and 4 inches

Step-by-step explanation:

The perimeter is equal to 2(2x + 1) + 2(x + 2) since there are two sides of the rectangle equal to the expressions given.

Since we also know that the perimeter is 18 inches, we can set that equal to 18.

2(2x + 1) + 2(x + 2) = 18

4x + 2 + 2x + 4 = 18

6x + 6 = 18

6x = 12

x = 2

After plugging 2 back into 2x + 1 and x + 2, you get 5 and 4. Hope this helped!

Answer 4 cm because least

Step-by-step explanation:

because it is the leats so that is ir.

Answer:

is proof an option?

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

okay, so she rode 3 miles. Keep that aside

Then she had 2 walk the remaining 2 miles

She had to walk all the way home. So say for example instead of riding she walked 3 miles, then she walked that additional 2 miles. So, 5 miles. Then add the two miles she had to walk to his house. so, she walked 7 miles and rode 3 miles. 7-3= 4 miles. I attached a picture that should hopefully explain it better.

Hope this helps!

Answer:

C

Step-by-step explanation:

A. 3:7 is not equal to 5:14 because both of these options are in their lowest value and are not equal.

B. 8:6 is not equal to 6:8 because 8 is not equal to 6 and 6 is not equal to 8.

C. 1:4 is equal to 5:20 because 1:4 can be multiplied by 5 to be 5:20 and 5:20 is equal to 5:20.

D. 5:3 is not equal to 12:5 because 5 is not equal to 12 and 3 is not equal to 15.

Hope this Helps! :)

Have any questions? Ask below in the comments and I will try my best to answer.

-SGO

Answer:

Draughts

Step-by-step explanation:

It still counts

Answer:

Step-by-step explanation:

The sum of a number n and 7 → n + 7

Twice the sum of a number n and 7 → 2 · (n + 7)

Answer:

i think 5 might be the correct answer

Step-by-step explanation:

Answer:

the third option or c

Step-by-step explanation:

hope this helps!

Answer:

x = 19; y = 19√3

Step-by-step explanation:

sin 30° = opp/hyp

sin 30° = x/38

x = 38 × sin 30°

x = 19

cos 30° = adj/hyp

cos 30° = y/38

y = 38 × cos 30°

y = 38 × √3/2

y = 19√3

-31.25  +  19.70

explanation:

change in account = withdraw amount + amount deposited

change in account:

-31.25  +  19.70

note: withdrawal will be negative and deposited positive

Answer:

10 centimeters = 0.1 meters

Step-by-step explanation:

Question  

How many meters are in 10 centimeters?

There are 100 centimeters in 1 meter.

Therefore, 1 centimeter = 1 ÷ 100 meters

                                       = 0.01 meters

So if 1 centimeter = 0.01 meters

Then 10 centimeters = 0.01 × 10 = 0.1 meters

Answer:

[tex]\frac{7\times15}{100}[/tex]

Step-by-step explanation:

Given the following question:

7% of 15

To find the answer we need to use the formula to calculate percentages in which we multiply the percentage by the whole number and then divide that answer by 100, of course rounding to the nearest cent if needed.

[tex]\frac{p\times n}{100}[/tex]
[tex]\frac{7\times15}{100}[/tex]
[tex]7\times15=105[/tex]
[tex]105\div=1.05[/tex]
[tex]=1.05[/tex]

7% of 15 is "1.05" which means Regina receives a $1.05 raise.

Hope this helps.

Answer:

Angle APB is 95∘

Step-by-step explanation:

180 - 54 = 126

126 - 31 = 95

Answer:

145 Degree

Step-by-step explanation:

it is a reflex angle and all reflex angle measures at 145 Degrees

Answer: Cytokinesis

Step-by-step explanation:

Hope this helped :)

Answer:

Try Cytokinesis

Step-by-step explanation:

This might help!

Answer: First find the volume of the rectangle prism. Do this by multiplying all three dimensions. 412 x 412 x 6 = 1,018,464.

Subtract 1,018,464 from 143.

You should get 1,018,321 mm^3

(Remember that the units are cubed because you multipled 412 mm x 412 mm x 6 mm which is multiplying not only the numbers, but the mm three times as well.)

Step-by-step explanation: hope it's helpful and thank you for letting me answer

Answer: Definitely Yes.

Step-by-step explanation:

Answer: YES, YOU CAN

Step-by-step explanation:

Answer:

387 contains 80 and 8 x 10 = 80

[tex] \Large{\boxed{\sf Height = 12 \ in}} [/tex]

[tex] \\ [/tex]

The area of a triangle is given by the following formula:

[tex] \\ [/tex]

[tex] \left[ \begin{array}{c c c} \underline{\tt Area \ of \ a \ triangle \text{:}} \\ ~ \\ \tt A = \dfrac{B \cdot H}{2} \end{array} \right] [/tex]

Where:

[tex] \\ [/tex]

[tex] \Large{\boxed{\sf Given \text{:} } \ \begin{cases} \sf A &=\sf 66 \ in^2 \\ \sf B &=\sf 11 \ in \end{cases} } [/tex]

[tex] \\ [/tex]

Substitute these values into the formula and solve for H.

[tex] \sf A = \dfrac{B \cdot H}{2} \\ \\ \\ \longrightarrow \sf 66 \ in^2 = \dfrac{11 \ in \cdot H}{2} [/tex]

[tex] \\ [/tex]

Multiply both sides by 2:

[tex] \longrightarrow \sf 66 \ in^2 \cdot 2 = \dfrac{11 \ in \cdot H}{2} \cdot 2 \\ \\ \\ \longrightarrow \sf 132 \ in^2 = 11 \ in \cdot H [/tex]

[tex] \\ [/tex]

Divide both sides by 11in :

[tex] \longrightarrow \sf \dfrac{132 \ in^2 }{11 \ in } = H \\ \\ \\ \longrightarrow \boxed{\boxed{\sf H = 12 \ in}} [/tex]

[tex] \\ [/tex]

[tex] \hrulfill [/tex]

[tex] \\ [/tex]

▪️Learn more about the area of a triangle here:

↣https://brainly.com/question/33705450

A triangle has an area of 66 in². If the base is 11 inches, what is the height?

The height of the triangle is 12 inches.

As per the provided information in the given problem, we know that the area of a triangle is given by 66 inches². The base of the triangle is given by 11 inches. In this problem, we are tasked to find the height of the triangle.

To do this, we will use the formula below:

[tex]\Large\begin{aligned}\rm\qquad\dashrightarrow{Area_{(Triangle)} = \dfrac{1}{2}bh}\end{aligned}[/tex]

Where:

Substitute the given values into the formula given earlier and solve for h:

[tex]\Large\begin{aligned}\rm\dashrightarrow{Area_{(Triangle)}}& = \rm{\dfrac{1}{2}bh}\\\rm\dashrightarrow{66\: in^2}& = \rm{0.5(11\: in)(h)} \\\rm\dashrightarrow{66\: in^2}& = \rm{(5.5\: in)(h)} \\\rm\dashrightarrow{\dfrac{66\: in^{\cancel{2}}}{5.5\: \cancel{in}}}& = \rm{\dfrac{(\cancel{5.5\: in})(h)}{\cancel{5.5\: in}}} \\\rm\dashrightarrow{12\: in}& = \rm{h}\end{aligned}[/tex]

Hence, the height of the triangle is 12 inches.

▪ Learn more about area of a triangle here:

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٩(｡・ω・｡)و

     "Not independent" means that the situation is dependent. It is not relying on something else, or something else will not change the outcome. Independent means the situation is isolated, it is independent.

A jar contains green marbles and orange marbles. A green marble is selected followed by an orange marble, at random, without replacement.

Not independent

-> Since the marbles are not being replaced, this isn't independent

A coin is flipped three times.

Independent

A bag contains nickels and dimes. A nickel is selected followed by a dime, at random, with replacement.

Independent

-> Because there is replacement, this is independent

A number cube is rolled twice.

Independent

You substitute x or y values and then plot the solution point that you find. You should plot at least three solution points. For example, here is a solution table that can be used to graph this function.

x | y

___

5 | 5

10 | 6

15 | 7

Answer:

groundwater

Step-by-step explanation: