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arlik [135]
3 years ago
14

What does this equal to 2(x - 5) + 7 = x + 8

Mathematics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

x= 11

Step-by-step explanation:

2 (x-5) + 7= x + 8

First we can distribute the 2(x-5) which gives us 2x - 10

2x-10 + 7= x + 8

subtract -10 + 7 which is -3

2x - 3= x + 8

Next, subtract the x to the left side and add the 3 to the right side

x= 11!

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Answer:

Ues

Step-by-step explanation:

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3 years ago
Find the area of the figure. Round to the nearest tenth
Reika [66]

Answer:

Find the area of each triangle and then add it up. As you are aware, to find the area of a triangle the equation is B times Height divided by 2.  And to make it easier do the top left triangle and the top right triangle, add them together and then divide that by 2.

Step-by-step explanation:

3 time 5 equals 15 divided by 2 equals 7.5

5 times 8 equals 40 divided by 2 equals 20

7.5 plus 20 equals 27.5

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2 years ago
For the following system, if you isolated x in the first equation to use the substitution method, what expression would you subs
alekssr [168]

Answer:

x=2y+6

Step-by-step explanation:

So we have the system:

-x+2y=-6\\3x+y=8

If we isolate the x-variable in the first equation:

-x+2y=-6

Subtract 2y from both sides:

-x=-6-2y

Divide both sides by -1:

x=2y+6

Therefore, we would substitute the above into the second equation:

3x+y=8\\3(2y+6)+y=8

The answer is 2y+6

Further notes:

To solve for the system, distribute:

6y+18+y=8

Simplify:

7y+18=8

Subtract:

7y=-10

Divide:

y=-10/7\approx-1.4286

Now, substitute this value back into the isolated equation:

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