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Andru [333]
2 years ago
10

Someone please help

Mathematics
1 answer:
AleksandrR [38]2 years ago
6 0

Replace y with 31:

31 = 7x -4

Add 4 to both sides:

35 = 7x

Divide both sides by 7:

x = 5

Input x = 5

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If you answer this your really cool B)
IrinaK [193]

Answer:

5

Step-by-step explanation:

they are vertical angles

7 0
3 years ago
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Solve for x. <br><br> -3x = -15
yuradex [85]

Answer:

x = 5

Step-by-step explanation:

-3x = 15

----     ----

-3      -3

x = 5

7 0
3 years ago
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Can someone help me and do it step by step
Tema [17]

Answer:

4

Step-by-step explanation:

65-25=40

40/10=4

6 0
3 years ago
The regular price of an item is $84. The item is on sale witha discount of $12. What is the discount rate.
sammy [17]

Answer:

Discount = 14.3% (rounded up to one decimal place)

Step-by-step explanation:

The regular price of an item is $84

Discount = $12

Percentage discount = (Discount ÷ regular price) × 100

Percentage discount = \frac{12}{84} × 100 = 14.3% (rounded up to one decimal place)

5 0
3 years ago
Which line shows theINITIAL error in volume work?
aliina [53]

In step 2, V = \frac{4}{3}(3.14)(37.5) show the error in volume work.

Solution:

Given data:

The steps shows it is sphere.

Radius of the sphere = 12.5

The value of π = 3.14

Volume of the sphere = \frac{4}{3} \pi r^3

Step 1:

$V=\frac{4}{3} (3.14)(12.5)^3

$V=\frac{4}{3} (3.14)(12.5)(12.5)(12.5)

Step 2:

$V=\frac{4}{3} (3.14)(1953.125)

Step 3:

$V=\frac{4}{3} (6132.81)

Step 4:

V = 8177.08 cubic units

This is the correct solution.

But in the given options, in step 2, 12.5 is multiplied by 3.

That is not the correct step. You have to do 12.5 × 12.5 × 12.5.

Hence in step 2, V = \frac{4}{3}(3.14)(37.5) show the error in volume work.

7 0
3 years ago
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