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vesna_86 [32]
3 years ago
9

Solve 7x-5x-3=x+4 please help

Mathematics
2 answers:
dybincka [34]3 years ago
5 0
7x-5x-3=x+4
2x-x=4+3
x=7
erastova [34]3 years ago
4 0
2x-3=x+4
x=7
You first do 7x-5x, then you move -3 to the other side, and you move the x to the left side, so it makes it 2x-x=3+4 so x=7
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2 years ago
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8 0
3 years ago
Which equation can be used to solve for b?<br> B<br> 5 cm<br> 10 cm<br> 30°
kati45 [8]

The Question is Incomplete The complete question with figure is below.

Answer:

Therefore the equation to solve for b is

\tan 30 = \dfrac{5}{b}

Step-by-step explanation:

Given:

In Right Angle Triangle ABC

∠C = 90°

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AB = 10 cm

∠A = 30°

To Find:

b = ?

Solution:

In Right Angle Triangle ABC Tangent identity we have

\tan A = \dfrac{\textrm{side opposite to angle A}}{\textrm{side adjacent to angle A}}

Substituting the values we get

\tan 30 = \dfrac{BC}{AC}\\\\\tan 30 = \dfrac{5}{b}

Therefore the equation to solve for b is

\tan 30 = \dfrac{5}{b}

6 0
3 years ago
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nirvana33 [79]

Answer:

PREACH

Step-by-step explanation:

that is so smart :)

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Read 2 more answers
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