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3 years ago

What is the answer of this 5-x=7-2x

Mathematics

2 answers:

aleksandr82 [10.1K]3 years ago

8 0

Answer:

x=2

Step-by-step explanation:

5-x=7-2x

5+x=7 (Move 2x to the other side)

x=2 (Minus 5 from both sides)

Check:

5-x=7-2x

5-2=3

7-(2*2)= 7-4 = 3

(Correct)

shtirl [24]3 years ago

6 0

Answer:

x = 2

Step-by-step explanation:

5 - x = 7 - 2x

-x + 2x = 7 - 5

x = 2

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27^{3x}=(1/9)^x<br> write in b^x=b^y form

iogann1982 [59]

Answer:

3^9x=3^-2x

Step-by-step explanation:

27^3x=(1/9)^x

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3^9x=3^-2x

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3 years ago

A toy manufacturer wants to know how many new toys children buy each year. A sample of 601 children was taken to study their pur

Lilit [14]

Answer:

The confidence interval is 6.6<μ<6.8.

Step-by-step explanation:

We have:

Number of observations = 601

Mean = 6.7

Standard deviation σ = 1.5

The z-score for a 95% confidence interval is 1.96.

The limits of the confidence interval can be calculated as

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The confidence interval is 6.6<μ<6.8.

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3 years ago

Prove that <img src="https://tex.z-dn.net/?f=cos%209x-cos%205x%2Fsin17x-sin3x%3D-sin2x%2Fcos10x" id="TexFormula1" title="cos 9x-

maria [59]

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3 years ago

Please help i don't get it

Ivan

The perimeter is just all the lines around the outside of the shape so basically take all the numbers and add them together to get the answer

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3 years ago

Read 2 more answers

What do you get when you subtract 9 from b?

In-s [12.5K]

Answer:

4

step by step:

b-9=4

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3 years ago