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Stells [14]
3 years ago
7

-85 - 8x =2x + 115 anyone know how to do this??

Mathematics
2 answers:
taurus [48]3 years ago
8 0
-85 - 8x = 2x + 115
-85 + 85 - 8x = 2x + 115 + 85
-8x = 2x + 200
-8x - 2x = 2x - 2x + 200
-10x = 200
-10x/-10 = 200/-10
X = -20
garik1379 [7]3 years ago
7 0

Answer: x= -20

Step-by-step explanation:

Add 85 85 to both sides.

-8x=2x+115+85−8x=2x+115+85

Simplify  2x+115+852x+115+85  to  2x+2002x+200.

-8x=2x+200−8x=2x+200

Subtract 2x2x from both sides.

-8x-2x=200−8x−2x=200

Simplify  -8x-2x−8x−2x  to  -10x−10x.

-10x=200−10x=200

Divide both sides by -10−10.

x=-\frac{200}{10}x=−

​10

​

​200

​​

Simplify  \frac{200}{10}

​10

​

​200

​​   to  20 20.

x= - 20

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Help with math asap!<br> ty in advance :)
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Answer:

2.108*10^3

Step-by-step explanation:

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2 years ago
Let a, b, c and x elements in the group G. In each of the following solve for x in terms of a, b, and c.
alina1380 [7]

Answer:

The answer is x=a^{-1}cb^{-1}.

Step-by-step explanation:

First, it is important to recall that the group law is not commutative in general, so we cannot assume it here. In order to solve the exercise we need to remember the axioms of group, specially the existence of the inverse element, i.e., for each element g\in G there exist another element, denoted by g^{-1} such that gg^{-1}=e, where e stands for the identity element of G.

So, given the equality axb=c we make a left multiplication by a^{-1} and we obtain:

a^{-1}axb =a^{-1}c.

But, a^{-1}axb = exb = xb. Hence, xb = a^{-1}c.

Now, in the equality xb = a^{-1}c we make a right multiplication by b^{-1}, and we obtain

xbb^{-1} = a^{-1}cb^{-1}.

Recall that bb^{-1}=e and xe=x. Therefore,

x=a^{-1}cb^{-1}.

6 0
3 years ago
Can someone help me find the area of the following figure
ExtremeBDS [4]
1. The area of the full rectangle is 21 * 28 = 588. We will need this later. 

Like you drew, there is an imaginary triangle missing. We can find the dimensions of it by subtracting from the given information. The shorter leg of it is 21 - 12 = 9, the longer leg is 28 - 14 = 14.

Now we find the area of the triangle. Area of a triangle is 1/2 * base * height. So 1/2 * 9 * 14 = 1/2 * 126 = 63. 

Now we do the full area of 588 minus the area of the missing triangle piece. 

588 - 63 = 525 ft²

2. Do the area of the rectangle and then this time add on the area of the triangle. 7 * 15 = 105. Area of the triangle = 1/2 * 2 * 7 = 1/2 * 14 = 7. 

105 + 7 = 112 in²
6 0
3 years ago
Mrs. Diaz had 5/6 gallon of paint to start. When she finished sha had 1/2 gallon. How much paint did Mrs. Diaz use?​
exis [7]

Answer:

1/3

Step-by-step explanation:

To get the amount of paint,you will have to deduct the number of paint she used to start minus the amount of of gallon she finished with.

5/6-1/2

L.C.M

10-6/12

4/12

=1/3

4 0
3 years ago
Find the m∠1, if p|| q, and m∠4 = 125 degrees. m∠1 =
polet [3.4K]

Step-by-step explanation:

m<5=180-m<4 (linear pair)

m<5=180-125 = 55°

m<5=m<1 ( alternate angle)

therefore, m<1 = 55°.

hope this helps you.

8 0
2 years ago
Read 2 more answers
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