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sasho [114]
3 years ago
12

3x-8y=-50 6y=x solve by substitution​

Mathematics
1 answer:
worty [1.4K]3 years ago
3 0

Answer:

Step-by-step explanation:

3x-8y=-50.........(1)

6y= x ..............(2)

Substituting x = 6y in (1)

3(6y) - 8y = -50

18y - 8y = -50

10y = -50

y = -50/10

y = -5

Putting y = -5 in (2)

6y = x

6(-5) = x

-30 = x

x = -30

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Need answer ASAP!!!!!!!!!
seropon [69]
The answer would be x= 7,-7
3 0
3 years ago
8 ÷ 3/5 Equals? I need this quickly.
cricket20 [7]

Answer:

= 40/3    =  13  1/3  

Step-by-step explanation:

8/1 ÷ 3/5     =   8/1 x 5/3

                         8 x 5 = 40

                          1 x 3 = 3

= 40/3    =  13  1/3

6 0
3 years ago
12. Find x. (x + 20)° (5x - 8)°​
ololo11 [35]

Answer:

<h2>x = 7</h2>

Step-by-step explanation:

Simplifying

x + 20 = 5x + -8

Reorder the terms:

20 + x = 5x + -8

Reorder the terms:

20 + x = -8 + 5x

Solving

20 + x = -8 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.

20 + x + -5x = -8 + 5x + -5x

Combine like terms: x + -5x = -4x

20 + -4x = -8 + 5x + -5x

Combine like terms: 5x + -5x = 0

20 + -4x = -8 + 0

20 + -4x = -8

Add '-20' to each side of the equation.

20 + -20 + -4x = -8 + -20

Combine like terms: 20 + -20 = 0

0 + -4x = -8 + -20

-4x = -8 + -20

Combine like terms: -8 + -20 = -28

-4x = -28

Divide each side by '-4'.

x = 7

Simplifying

x = 7

8 0
3 years ago
At Saturday night’s football game there were 18 less fans than half the fans at Friday night’s game. There were “x” fans at Frid
Valentin [98]
X divided by 2 take away 18 hope it helps.
7 0
3 years ago
If g(x) = 1 - ¾ x <br> find: -5g(4) - 1
cricket20 [7]

Answer:

<u>-</u><u>5</u><u>g</u><u>(</u><u>4</u><u>)</u><u> </u><u>-</u><u> </u><u>1</u><u> </u><u>is</u><u> </u><u>9</u>

Step-by-step explanation:

g(x) = 1 -  \frac{3}{4} x

when x is 4:

g(4) = 1 -  \frac{3}{4}  \times 4 \\  = 1 - 3 \\  =  - 2

therefore:

- 5g(4) - 1 =  - 5( - 2) - 1 \\  = 10 - 1 \\  = 9

5 0
3 years ago
Read 2 more answers
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