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3 years ago

Look at the following numbers:

Mathematics

2 answers:

jok3333 [9.3K]3 years ago

8 0

Answer:

The correct answer is: -7, 7

Step-by-step explanation:

Given numbers are:

-7, 0, 7, 14

We have to check all pairs of numbers with respect to sum to check that which pair of numbers sums up to zero. So first of all, we will take -7 and will find its sum with other numbers.

So,

$-7+0 = -7\\-7+7=0\\-7+14 = 7$

We can see that the sum of -7 and 7 is zero.

Hence,

The correct answer is: -7, 7

Bumek [7]3 years ago

4 0

Your answer is B.) -7, 7

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Step-by-step explanation:

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<em>hope this helps :)</em>

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loris [4]

Answer: 1/4:1 1/4 = 2:b

↓

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Step-by-step explanation:

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3 years ago

The price of an item has dropped to $63 today. Yesterday it was $140. What was the percentage decrease?

den301095 [7]

Given:

a.) The price of an item has dropped to $63 today.

b.) Yesterday it was $140.

For us to be able to determine the percentage decrease, we will be using the following formula:

$\text{ Percentage Decrease = }\frac{\text{ Original Price - Present Price}}{\text{ Original Price}}\text{ x 100}$

We get,

Original Price = $140

Present Price = $63

$\text{ Percentage Decrease = }\frac{\text{ Original Price - Present Price}}{\text{ Original Price}}\text{ x 100}$ $\text{ = }\frac{\text{ 140 - 63}}{\text{ 140}}\text{ X 100}$ $\text{ = }\frac{77}{140}\text{ X 100}$ $\text{ = }0.55\text{ x 100}$ $\text{Percentage Decrease = }55\text{\%}$

Therefore, the decrease of the price in percentage is 55%.

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2 years ago