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Arisa [49]
3 years ago
12

Solve all of them step by step (12 points!)

Mathematics
2 answers:
Rashid [163]3 years ago
7 0
A) 2x + 4(x-1) = 2 + 4x
Multiply everything in the parenthesis by 4.

2x + 4x - 4 = 2 + 4x

Combine like terms.

6x - 4 = 2 + 4x

Subtract 4x from both sides.

2x - 4 = 2

Add 4 to both sides.

2x = 6

Divide 2 on both sides.

x = 3

b) 25 - x = 15 - (3x + 10)
Multiply everything in the parenthesis by -1.

25 - x = 15 - 3x - 10

Combine like terms.

25 - x = 5 - 3x

Add 3x to both sides.

25 + 2x = 5

Subtract 25 from both sides.

2x = -20

Divide 2 on both sides.

x = -10

c) 4x = 2x + 2x + 5(x - x)

Multiply everything in the parenthesis by 5.

4x = 2x + 2x + 5x - 5x

Combine like terms.

4x = 4x

This means that there is an infinite amount of solutions.

Hope this helps!
Olegator [25]3 years ago
4 0
(a)have aseconf ques. ans

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Answer:

≈ 56°

Step-by-step explanation:

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? = sin^{-1} ( \frac{34}{41} ) ≈ 56° ( to the nearest degree )

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Step-by-step explanation:

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Drag a description to match each equation
ivanzaharov [21]

Hi,

Answer:

1) y = 2x - Multiplicative: y is 2 times x


2) y= x +2 - y is 2 more than x

<u>My work:</u> These are the right answers, because whenever there is an variable such as x next to a number it’s means to multiply. The second would be y is more than x because one the other two are for x values and two, because in this problem you add.

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