Which table shows a proportional relationship between x and y? please help and answer quick plz

Mathematics

1 answer:

gavmur [86]3 years ago

3 0

The answer is c.

(a)

x * 2 = y
2 * 2 = 4
3 * 2 = 6
4 * 2 = 8 not 9

(b)

unknown formula

(c)

x * 3 = y
4 * 3 = 12
5 * 3 = 15
6 * 3 = 18

(d)

x * 4
1 * 4 = 4
2 * 4 = 8
3 * 3 = 9 not 15

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0.2x + 1 = 1.6x + 3.1 What value of x satisfies the equation above?

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Answer:

x = -1.5

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDAS
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Step-by-step explanation:

Step 1: Define equation

0.2x + 1 = 1.6x + 3.1

Step 2: Solve for x

Subtract 0.2x on both sides: 1 = 1.4x + 3.1
Subtract 3.1 on both sides: -2.1 = 1.4x
Divide both sides by 1.4: -1.5 = x
Rewrite: x = -1.5

Step 3: Check

Plug in x to verify it's a solution.

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Read 2 more answers

A square patio has a perimeter of (8x + 48) feet. What is the length of the patio?

4vir4ik [10]

Answer:

2x+12

Step-by-step explanation:

We have a square patio, then each side of the patio has the same lengt. As we know the perimeter of a square is the sum of all sides. Then to know the length of the patio we just need to divide by 4 the perimeter.

$\dfrac{(8x+48)}{4}=\dfrac{8x}{4}+\dfrac{48}{4}=2x+12$