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nekit [7.7K]
3 years ago
9

Which expression is equivalent to 56 + 21?

Mathematics
1 answer:
Ghella [55]3 years ago
3 0
If the last one is supposed to be 7(8+3), it would be equivalent to 56+21
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What is the sum of the fractions? <br> 3/5+(-7/5)
mario62 [17]

Answer:

-4/5

Step-by-step explanation:

3/5+(-7/5)

Since there are a + sign and a - sign next to each other, they cancel out to make a - sign.

3/5 - 7/5

Now, we can subtract.

3/5 - 7/5 = -4/5

Hope this helps! :)

4 0
3 years ago
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Mitchell received a stipend at the beginning of the semester to buy textbooks. During the semester, he spent $430.84 on textbook
tatyana61 [14]

Answer:

$566.88

Step-by-step explanation:

$430.84 + $136.04 = $566.88

7 0
2 years ago
How much more would the value of y be on the graph than its value
kipiarov [429]

Answer:

180

Step-by-step explanation:

From the table :

Slope :

m = (y2 - y1) / (x2 - x1)

m = (100 - 80) / (5 - 4)

m = 20 / 1

m = 20

y = 20x

Hence, when, x = 12

y = 20 * 12

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From the graph:

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y = 35x

When x = 12

Graph :

y = 35 * 12

y = 420

Difference :

420 - 240

= 180

6 0
3 years ago
A useful rule of thumb called the "rule of 70" states that if something grows at a constant rate of z percent per year, it doubl
vesna_86 [32]
<span>The answer is b. (70/z). If I put $100 into a savings account and the annual growth rate is 10%, the 70/10%= 7 years that the initial $100 would take to double.</span>
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3 years ago
Is x 12 or 15? Or none?
Usimov [2.4K]
The answer is 15 buddy!
7 0
3 years ago
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