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sasho [114]
3 years ago
5

Use mental math to solve for the missing number:

Mathematics
2 answers:
Vaselesa [24]3 years ago
8 0

Answer:

39

Step-by-step explanation:

Let the number be x.

The quotient of x and 3 is 13.

x/3 = 13

Multiply both sides by 3.

x = 13 × 3

x = 39

lora16 [44]3 years ago
5 0

Answer:

39

Step-by-step explanation:

The quotient of a number and 3 is 13. That's the same as saying n/3 = 13.

IF you multiply both sides of the equation by 3, you get n = 39, which is what we want.

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Please Help!! Find the Polynomial!!
grin007 [14]

Answer:

\pi x^2-8\pi x+16\pi

Step-by-step explanation:

To find the area of the inner circle, we need to find its radius. Here, we can write the radius as 4 - x. Now, we can use the formula A=\pi r^2:

A = \pi * (4-x)^2

We can expand the square:

A = \pi *(16-8x+x^2)=\pi x^2-8\pi x+16\pi

Thus, the polynomial is \pi x^2-8\pi x+16\pi.

Hope this helps!

7 0
3 years ago
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the georgetown basketball team scored the winning basket in the last second of the game! The 11 basketball players from the Geor
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Answer:

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Step-by-step explanation

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7 0
3 years ago
Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 1 more than 3 times the number o
Margaret [11]

Answer:

Mark has 13 marbles

Don has 40 marbles

Step-by-step explanation:

Let the number of Mark's Marbles = M

Let the number of Don's Marble = D

D = 1 + 3M - - - - (1)  (Don has 1 more than 3 times the number of marbles Mark has)

D + M = 53 - - - - - (2) (total number of marbles is 53)

puttin the value of D from equation (1) into equation (2)

(1 + 3M) + M = 53

1 + 3M + M = 53

1 + 4M = 53

4M = 53 - 1 = 52

4M = 52

M = 52 ÷ 4

M = 13

finding D by putting the value of M (M = 13) into equation 1

D = 1 + 3M - - - - (1)

D = 1 + 3 (13)

D = 1 + 39

D = 40

∴ Mark has 13 marbles

Don has 40 marbles

4 0
4 years ago
Jorge used to pay $26 to park his car for 6.5 hours in a parking garage,
den301095 [7]

Answer:

The parking garage went from charging 4$ an hour to 6$ an hour.

there is a 50% increase

Step-by-step explanation:

3 0
3 years ago
The cost y of renting a car for x days is $10.99 for each half day.
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The answer is y=10.99x
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3 years ago
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