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Vlada [557]
2 years ago
10

Match the pairs of equivalent expressions.

Mathematics
1 answer:
AlexFokin [52]2 years ago
5 0

i would say y + 2/5y is the equivalent expression of 7/5y and y - 2/5y is the quivalent expression of 3/5y but im not sure

You might be interested in
The average weight of the class of 35 students was 45 KG. with the admission of a new student the average weight came down to 44
melamori03 [73]

The weight of the new student is 27 kg.

Average weight

= total weight ÷total number of students

<h3>1) Define variables</h3>

Let the total weight of the 35 students be y kg and the weight of the new student be x kg.

<h3>2) Find the total weight of the 35 students</h3>

<u>45 =  \frac{y}{35}</u>

y= 35(45)

y= 1575 kg

<h3>3) Write an expression for average weight of students after the addition of the new student</h3>

New total number of students

= 35 +1

= 36

Total weight

= total weight of 35 students +weight of new students

= y +x

44.5  =  \frac{y + x}{36}

<h3>4) Substitute the value of y</h3>

44.5 =  \frac{1575 + x}{36}

<h3>5) Solve for x</h3>

36(44.5)= 1575 +x

1602= x +1575

<em>Subtract 1575 from both sides:</em>

x= 1602 -1575

x= 27

Thus, the weight of the new student is 27 kg.

7 0
2 years ago
Can someone help me fully simplify this step by step pleaseeeee
JulijaS [17]

2x - 7x + 2 + 1 - 2

2x - 7x + 3 - 2

- 5x + 1

7 0
2 years ago
Write an equation of the line passing through the points (3,9) and (-1,- 15).
marishachu [46]
Step 1: Find the slope.
Step 2: Find the value of b.
Step 3: Get the y=mx+b

8 0
2 years ago
Problem 3
stich3 [128]
In the step after -6x+10=4x+20, he moved the terms incorrectly. you have to add 6x to both sides so it would be 10=4x+6x+20 which simplifies to 10=10x+20. subtract 20 from both sides to get -10=10x. divide both sides by 10. the answer is x=-1
8 0
2 years ago
Read 2 more answers
Pls helpp me on this
Crank

Answer:8

Step-by-step explanation:

When you round it depends on what number it is.

So for 7.8 it is closer to eight not seven

8 0
2 years ago
Read 2 more answers
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