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m_a_m_a [10]
3 years ago
10

8x + 1 = -8 - X What is X?

Mathematics
2 answers:
worty [1.4K]3 years ago
6 0

Answer:

x=-1

Step-by-step explanation:

8x+1=−8−x

8x+1=−8+−x

8x+1=−x−8

8x+1+x=−x−8+x

9x+1=−8

9x+1−1=−8−1

9x=−9

9x9=−99

x=−1

Alexxx [7]3 years ago
5 0

Answer:

<u><em>X = -1</em></u>

<u><em>Step-by-step explanation:</em></u>

  • <u><em>Add x to both sides.</em></u>
  • <u><em>8x + 1 + x = -8</em></u>
  • <u><em>Combine 8x and x to get 9x.</em></u>
  • <u><em>9x + 1 = -8</em></u>
  • <u><em>Subtract 1 from both sides</em></u>
  • <u><em>9x = -9</em></u>
  • <u><em>Divide both sides by 9 </em></u>
  • <u><em>x = -9/9</em></u>
  • <u><em>x = -1</em></u>

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crimeas [40]

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$8.50x (since it is the rate of change) + $12 (flat fee) = total money earned (or y). In this case, we have the total, amount, and are looking for x. Plug $139.50 into the equation.

$8.50x + $12 = $139.50

Now, solve for x.

$8.50x + $12-12 = $139.50-12  > <em>$8.50x = $127.5</em>

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7 0
3 years ago
Mary is spending money at the average rate of $5 per day. After 14 days she has $68 left. The amount left depends on the number
Radda [10]

Answer:

A. Y-68=-5(x-14)

Step-by-step explanation:

Mary is spending money at the average rate of $5 per day. After 14 days she has $68 left. The amount left depends on the number of days that have passed. write an equation for the situation

We find the equation using the point slope equation of a line. This is given as:

y - y1 = m(x-x1)

The slope intercept form will be

y = -5x + b

since the amount decreases by $5 per day...

Our slope is -5 so m=-5

We have a point (x1,y1) = (14, 68)

Hence, we have:

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4 0
3 years ago
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ICE Princess25 [194]

Answer:The answer is B


Step-by-step explanation:

first find te height:

1.5/2=0.75 (this will be your "b" of the pythagorean theorem for finding the height)

now do the  pythagorean theorem:

a^2+0.75^2=3^2

(height)= 2.905

A= a^2+2a√((a^2/4)+h^2)

a (base edge)= 1.5

h (height)= 2.905

Calculate and you get B as your answer.


Hope this elpsand you get this right!

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Answer:

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Step-by-step explanation:

We solve the above y by carrying out addition.

The quarts of Lemonade she made is calculated as:

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= 1 + 5 + (2/5 + 3/10)

Lowest common denominator = 10

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