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Hatshy [7]
3 years ago
14

Need help I’m don’t know how

Mathematics
1 answer:
VMariaS [17]3 years ago
7 0
The area of this is 12. 
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X=2y-4<br>7x+5y=-66 <br> what is the x- value​
Gwar [14]

Answer:

x = -8

Step-by-step explanation:

x = 2y - 4 --- Equation 1

7x + 5y = -66 --- Equation 2

I will be using the substitution method to solve this.

Substitute x = 2y - 4 into Equation 2:

7x + 5y = -66

7(2y - 4) + 5y = -66

Evaluate.

14y - 28 + 5y = -66

Evaluate like terms.

19y - 28 = -66

Isolate 19y.

19y = -66 + 28

     = -38

Find y.

y = -38 ÷ 19

y = -2 --- Equation 3

Substitute y = -2 into Equation 1:

x = 2y - 4

x = 2(-2) - 4

Evaluate.

x = -4 - 4

x = -8

5 0
2 years ago
Find the inverse of f(x)=7.50x
m_a_m_a [10]
there is no inverse though
8 0
2 years ago
What is the solution of the system? Use elimination.<br><br> 3 (-5x-2y=6)<br> 3x+6y=6
Iteru [2.4K]

Answer:

x = -2 and y = 2

Step-by-step explanation:

The given equations are :

-5x-2y=6 ...(1)

3x+6y=6 ...(2)

Multiply equation (1) by 3. SO,

-15x-6y=18 ...(3)

Adding equation (2) and (3).

3x+6y-15x-6y = 6+18

-12x = 24

x = -2

Put the value of x in equation (1).

-5(-2)-2y=6

10-2y=6

4=2y

y = 2

So, the value of x is -2 and y is 2.

6 0
2 years ago
Jose is a botanist studying production of coconuts by two different groups of his
Colt1911 [192]

Answer: 132

Step-by-step explanation:

Since we are informed that Group 1 of trees produced 25 percent more coconuts than Group 2 did and that Group 1 produced 165 coconuts, the number of coconuts that Group 2 produce will be:

= [100 / (100 + 25)] × 165

= 100/125 × 165

= 0.8 × 165

= 132

Group 2 produced 132 coconuts.

5 0
3 years ago
The Flu has spread throughout a town. The function below determines how many people have the flu where t=time in days and f(t)=
Gelneren [198K]

Answer:

sorry I don't have the answer right now but ill let you know

6 0
2 years ago
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