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earnstyle [38]
3 years ago
5

What are the solutions of the system 7x + 3y = -3 and y = -2 x ?

Mathematics
2 answers:
saul85 [17]3 years ago
6 0
I am assuming that the second equation is y = -2^x. In that case, the correct answers are (0, -1) and (3, -8).
Maslowich3 years ago
3 0

Answer:

(0, -1) and (3, -8)

Step-by-step explanation:

7x + 3y = -3 and y = -2^x

LEts check with each option

(-1, 0) and (-8, 3)

y=-2^x , plug in x=-1

y= -2^-1 =-1/2 is not equal to 0

(0, -1) and (3, -8), plug in (0,-1)

y=-2^x = -2^0 = -1, so (0,-1) satisfies the equation y=-2^x

LEts check with equation 7x+3y = -3

7(0)+3y =-3

3y=-3 so y =-1

Hence (0,-1) satisfies the both equation

LEts check with (3,-8)

y=-2^x= -2^3= -8

7x+3y=-3

7(3)+ 3y=-3

21 +3y=-3

3y=-24 so y = -8

(3,-8) also satisfies both equations

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Solve for g.
Y_Kistochka [10]

Answer:

g =6/5                           g=-5/2

Step-by-step explanation:

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7 0
3 years ago
The ratio of the number of cups of blue paint to the number of cups of red paint that Lara mixed to make a shade of purple paint
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Answer:

a

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b

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c

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Step-by-step explanation:

From the question we are told that

   The ratio of  the number of cups of blue paint to the number of cups of red paint is  r  =  3: 1

Generally given that the number of cups of blue to that of red paint is 3: 1 then the Lara mixed 3 cups of blue paint with 1 cup of red paint

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=>      x=  \frac{1}{3}

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=>  P  = \$ 8

     

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3 years ago
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sveticcg [70]
A. cause  i did it on the calculator so i know its right
3 0
3 years ago
Read 2 more answers
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