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bekas [8.4K]
3 years ago
5

How many solutions are there to the equation 8x - 7 = 2 (2x + 7) - 5

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
7 0
The answer would be x=4
igomit [66]3 years ago
3 0

Answer:

x=4

Step-by-step explanation:

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

8x - 7 =4x +14 - 5

8x - 7 =4x +9

8x - 4x =9 +7

4x =16

x=16 :4

x=4

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I really need help on themis math!!!!!!!!!!
cluponka [151]
Midpoint formula is M=( (x1+x²)/2 , (y1+y²)/2 )
let A be there point (x1,y1), our (2,3)

plug into the formula to get

(-2,1)=( (2+x²)/2, (3+y2)/2 )
so -2=(2+x2)/2 and 1=(3+y2)/2



x2=-6 and y2=-1
answer is B

7 0
3 years ago
Solve the system of equations for 7x+2y=16 and -21x-6y=24
Georgia [21]
Simplifying
7x + 2y = 16

Solving
7x + 2y = 16

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2y' to each side of the equation.
7x + 2y + -2y = 16 + -2y

Combine like terms: 2y + -2y = 0
7x + 0 = 16 + -2y
7x = 16 + -2y

Divide each side by '7'.
x = 2.285714286 + -0.2857142857y

Simplifying
x = 2.285714286 + -0.2857142857y
6 0
3 years ago
M=-2 (-3,4) how do you write it into slope intercept
Blizzard [7]

Answer:

y = -2x - 2

Plug the x- and y-values into the appropriate spaces in the slope-intercept form and see which value for b would make the equation true:

4 = -2(-3) +/- ?

4 = 6 - 2

4 = 4

I don't know if this makes sense, I'm sorry if it doesn't but the answer is correct because it goes through the point (-3,4)

3 0
3 years ago
Read 2 more answers
ASAP<br> 7x+42=0<br> Options <br> x= 6<br> X= -6
lutik1710 [3]
The answer is 6x. You divide 42 by 7. Take out the x. 42 divided by 7 will equal 6.
6 0
2 years ago
The mean of 5 numbers is ten I add one now the mean is 11 which number did I add?
Leno4ka [110]

Answer:

you added 6

Step-by-step explanation:

how the number order goes.

3 0
2 years ago
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