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Nutka1998 [239]
4 years ago
14

Help!!!!!!!!!!! Solve for x x+11+8x=29 Explain how you got the answer please!

Mathematics
2 answers:
dolphi86 [110]4 years ago
8 0
X + 11 + 8x = 29. We need to solve for x.
First, on the left side, you have "x" and "8x": You can always add 2 numbers with the same variable, so you have 1 number: x + 8x = 1x + 8x = (1+8)x = 9x

So we get:
9x + 11 = 29

Now subtract 11 from both sides (You can't do any operation if you don't do it both sides), so you can get the variable alone on the left side, and the numbers on the right side:
9x + 11 = 29
9x + 11 - 11 = 29 - 11
9x = 18

Now divide both sides by 9, so you can transform the coefficient of x to one, and have the numeric value of x on the right side:
9x = 18
(9x)/9 = 18/9
x = 2

So x+11+8x = 29 for x = 2.

You can recheck your answer (very important):
x + 11 + 8x = 2 + 11 + 8*2 = 2 + 11 + 16 = 13 + 16 = 29
The answer has been approved.

Hope this Helps! :)
CaHeK987 [17]4 years ago
6 0
Your answer will be 2.5. see when you write the the equation you always want to keep the x positive so you will subtract x from 8x to get 7x. then you will take 11 x and subtract it from 29 leading it to be 18. then you want to get the x by itself so you will take 7x divided by 7 and 18 divided by 7 and you'll get x=2.5. Hoped it helped!!
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Order the values of the differences from least to greatest. First, write the fractions as decimals. StartFraction 4 Over 5 EndFr
ddd [48]

Complete Question:

Ms. Perez's biology class grew sunflowers to learn about plants. During the first week, the average sunflower grew 3 inches. The table shows the difference from the average for three students.

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Student: Clara. Difference (in.): -1 1/2

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Answer:

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The greatest is: 0.9

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Step-by-step explanation:

See comment for complete question

Given

Differences:

\frac{4}{5}, -1\frac{1}{2}, 0.9

Required

Order from least to greatest

We have: \frac{4}{5}, -1\frac{1}{2}, 0.9

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0.8, -1.5, 0.9

Now arrange from least to greatest

-1.5, 0.8 and 0.9

From the above representation,

The greatest is: 0.9

By student names, we have:

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This is done by simply replacing the numbers with the student name.

See attachment for number line

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