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2 years ago

The price of a coat increased from $78 to $92. What is the price increase percentage?

Mathematics

1 answer:

svetlana [45]2 years ago

6 0

Answer:

18%

Step-by-step explanation:

Percent change can be found using the following formula:

$\frac{original-new}{original}*100$

Original represents the initial cost where new represents the new cost. We multiply the answer by 100 to get the percentage:

$\frac{92-78}{78}*100$ = 18%

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What is 126 divided by 14?

lana66690 [7]

$\frac { 126 }{ 14 } \\ \\ =\frac { 63\cdot 2 }{ 7\cdot 2 } \\ \\ =\frac { 63 }{ 7 } \\ \\ =9$

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3 years ago

RSM wants to send four of its 18 Math Challenge teachers to a conference. How many combinations of four teachers include exactly

tatiyna

Answer:

1120 combinations of four teachers include exactly one of either Mrs. Vera or Mr. Jan.

Step-by-step explanation:

The order in which the teachers are chosen is not important, which means that the combinations formula is used to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

1 from a set of 2(Either Mrs. Vera or Mr. Jan).

3 from a set of 18 - 2 = 16. So

$C_{2,1}C_{16,3} = \frac{2!}{1!1!} \times \frac{16!}{3!13!} = 1120$

1120 combinations of four teachers include exactly one of either Mrs. Vera or Mr. Jan.

4 0

2 years ago

Jason bought 3 dozen eggs from the grocery store to bake some cakes how many eggs did Jason buy?

Snowcat [4.5K]

Answer:

He bought 36 eggs

Step-by-step explanation:

3x12=36

6 0

2 years ago

Read 2 more answers

What do you call when a relation with each x value has one y value

Nitella [24]

When each x value has only one y value, the relation is a function

5 0

2 years ago

What is the value of x?<br> -2x = 8

STatiana [176]

This is a simply problem. Just divide both sides the coefficient of x. Which is -2.

And the answer will be x = -4

6 0

2 years ago