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nadezda [96]
4 years ago
14

7x+5x-7=21+10x

Mathematics
2 answers:
svlad2 [7]4 years ago
7 0

Answer:

Because there is one solution for this equation, it means it is neither.

Step-by-step explanation:

7x+5x-7=21+10x

12x-7 = 10x +21

2x = 28

 x = 14

It has one solution, which is 14.

Because there is one solution for this equation, it means it is neither.

See my other articles for quiz and assignment in my site.

Just copy and paste "learningandassignments diy4pro" to google search engine.

Hope it helps.

dlinn [17]4 years ago
4 0

Answer:

One Solution

Step-by-step explanation:

Step 1:

7x + 5x - 7 = 21 + 10x  Equation

Step 2:

12x - 7 = 21 + 10x   Add

Step 3:

2x - 7 = 21   Subtract 10x on both sides

Step 4:

2x = 28   Add 7 on boths sides

Step 5:

28 ÷ 4    Divide

Answer:

x = 7

Hope This Helps :)

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Answer:

\cos^{-1}(\frac{6.3}{9.8})

\sin^{-1}(\frac{7.5}{9.8})

Step-by-step explanation:

Recall the mnemonics SOH-CAH-TOA

The sine ratio is the length of the opposite side expressed over the hypotenuse.

\sin m\angle ABC=\frac{7.5}{9.8}

Take the sine inverse of both sides to get;

m\angle ABC=\sin^{-1}(\frac{7.5}{9.8})

The cosine ratio is the length of the adjacent side expressed over the hypotenuse.

\cos m\angle ABC=\frac{6.3}{9.8}

Take the cosine inverse of both sides to get;

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Which has a measure that is equal to the sum of the measures of the interior angles of a triangle?
lions [1.4K]

Answer:

a straight line

Step-by-step explanation:

<u><em>The complete question is</em></u>

Which has a measure that is equal to the sum of the measures of the interior angles of a triangle?

A) a straight line

B) a circle

C) a right angle

D) an obtuse angle

we know that

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Option B) a circle

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Option D) an obtuse angle

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therefore

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