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Contact [7]
3 years ago
14

SCHOOL START TOMORROW HELPPP PLEASEEE. JUST NUMBER 3

Mathematics
1 answer:
Lelu [443]3 years ago
4 0

Answer:

Equation: x-(-2)=21

Solution: x=19

Step-by-step explanation:

A number decreased by -2 is equal to 21.

Let's call the number,x. Decreased means we are going to subtract.

x-(-2)=21

-(-2) is just +2:

x+2=21

Subtract 2 on both sides:

x=21-2

Simplify:

x=19

So if 19 is decreased by -2 we should get 21.

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4 years ago
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What is the answr to -5(b + 1) = 8
julsineya [31]

- 5(b + 1) = 8 \\  - 5b - 5 = 8 \\  - 5b = 8 + 5 \\  - 5b = 13 \\ b =  \frac{ - 13}{5}

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2 years ago
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Answer:

D. RS = DQ

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3 years ago
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3 years ago
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3. The teacher asked the class, "How many tenths are equivalent to 37.6?" Student 1 answered, "37 tenths." Student 2 answered, "
Ksivusya [100]

Using proportions, it is found that Student 2 is correct, as 37.6/0.1 = 376.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

One tenth is worth 0.1. How many tenths are there in 37.6? The division is given as follows:

37.6/0.1 = 376.

Hence student 2 is correct, as there are 376 tenths in 37.6.

More can be learned about proportions at brainly.com/question/24372153

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