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Solnce55 [7]
2 years ago
5

(PLZ FAST- 30 PTS)Which expressions are equivalent?

Mathematics
2 answers:
Digiron [165]2 years ago
5 0

Answer:

A. 3x-7y and -7y+3x

Step-by-step explanation:

Let x=1, y=2

3(1)-7(2)

3-14

-11

-7(2)+3(1)

-14+3

-11

Vera_Pavlovna [14]2 years ago
4 0
The answer is

3x-7y and -7y+3x
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The temperature dropped 5 °F every hour for 5 hours. What was the total number of degrees the temperature changed in the 5 hours
solong [7]

Answer:

25

Step-by-step explanation:

you just multiple 5 times 5

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3 years ago
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What is 9 2/5-8 1/3 I need to know for math tomorrow
patriot [66]

Answer:

1\frac{1}{15}

Step-by-step explanation:

Let's use a start by using common denominators. 9\frac{2}{5} = 9\frac{6}{15} and 8\frac{1}{3} = 8 \frac{5}{15}

Now, replace the original equation with the common denominators. 9\frac{6}{15} - 8\frac{5}{15}

Solve! 9\frac{6}{15} - 8\frac{5}{15} = 1\frac{1}{15}

8 0
3 years ago
I need help with Which table shows the correct methods used to justify the solution steps?
12345 [234]

Answer:

x = 8

Step-by-step explanation:

3 (x - 5) + 7x = 65

3x - 15 + 7x = 65

10x - 15 = 65

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5 0
2 years ago
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~khan academy 7th grade
pickupchik [31]

Question:

Which of the following expressions represents the distance between 1.7 and −1/2 on a number line?

Choose 1 answer: 

A.\ |1.7 - 1/2|

B.\ |1.7 -(-1/2)|

C. None of the above

Answer:

B.\ |1.7 -(-1/2)|

Step-by-step explanation:

Given

Numbers: 1.7 and -1/2

Required

Determine the distance

To calculate the distance, we start by calculating the difference between the given numbers;

Difference = 1.7 - (-1/2)

Then, we calculate the distance;

<em>In this case, the distance is meant to be positive; So, we'll introduce the symbol for absolute value;</em>

Hence,

Distance = |Difference|

Substitute 1.7 - (-1/2) for Difference;

Distance = |1.7 - (-1/2)|

<em>Hence, the correct option is B</em>

4 0
3 years ago
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I need help in this .each unit costs 14p.how much do 942 units costs?
ValentinkaMS [17]

Answer:

If each unit costs 14 (p?), then 942 units will cost 13,188.

Step-by-step explanation:

942 times 14 is 13,188

6 0
3 years ago
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