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3 years ago

Which sentence explains the correct first step in the solution of this equation? 4(x−3)=9

Mathematics

1 answer:

kodGreya [7K]3 years ago

4 0

Answer:

You will do the Distributive Property first.

Step-by-step explanation:

You will do the Distributive Property first.

4(x - 3) = 9 distribute the 4 into the x and -3.

4x - 12 = 9 add -12 to both sides.

4x = 21 divide 4 on both sides.

x = 5.25 is your answer.

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Find the value of (-3/8) x (+8/15

Mekhanik [1.2K]

$\frac{ - 3}{8} \times \frac{8}{15} \\ \\ = \frac{ \cancel{- 3}}{ \cancel8} \times \frac{ \cancel8}{ \cancel{15}} \\ \\ = - \frac{1}{5}$

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8 0

2 years ago

SOLVE 7-9 I WILL GIVE BRAINLIST

Mashcka [7]

Answer:

7. Approximately 402.7 inches or 2pi times 64

8. 31.83 To solve this you know 2pi r is an equation for the radius. 2πr=200 and r=200/2π=100/π= 31.83.

9. The one with pi in the equation because 3.14 is only a piece of pi but the symbol represents the whole number which goes on forever.

Step-by-step explanation:

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3 years ago

Which step is it?? Please help me.

eduard

Answer:

Use PEMDAS so division would be the first step

Step-by-step explanation:

1)Parentheses

2)Exponents

3)Multiplication

4)Division

5)Addition

6)Subtraction

6 0

3 years ago

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the

Vedmedyk [2.9K]

Answer:

416025

Step-by-step explanation:

For confidence interval of 99%, the range is (0.005, 0.995). Using a z-table, the z-score for 0.995 is 2.58.

Margin of error = 0.2% = 0.002.

Proportion is unknown. So, worse case proportion is 50%. p = 50% = 0.5.

\\ $n = \left(\frac{\texttt{z-score}}{\texttt{margin of error}} \right )^2\cdot p\cdot (1-p) \\ = \left(\frac{2.58}{0.002} \right )^2\cdot 0.5\cdot (1-0.5)=416025$

So, sample size required is 416025.

4 0

3 years ago

What is 6(3x - 4) = -8

Ludmilka [50]

Answer:

x = 8/9

Step-by-step explanation:

6(3x - 4) = -8

Distribute the 6

18x -24 = -8

Add 24 to each side

18x -24+24 = -8+24

18x = 16

Divide each side by 18

18x/18 =16/18

Simplify the fraction by dividing top and bottom by 2

x = 8/9

8 0

3 years ago

Read 2 more answers