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jeyben [28]
2 years ago
5

What is the resulting equation when the expression for y in the second equation is substituted into the first equation-3x+2y=-3

Mathematics
1 answer:
Alex2 years ago
5 0

Answer:

x=-5/11, y=-9/11. (-5/11, -9/11).

Step-by-step explanation:

3x+2y=-3

y=4x+1

---------------

3x+2(4x+1)=-3

3x+8x+2=-3

11x=-3-2

11x=-5

x=-5/11

y=4(-5/11)+1

y=-20/11+11/11

y=-9/11

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Nadia plans to paint her jewelry box. The box is shaped like a rectangular prism with the dimensions
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132\ in^{2} is closest to the total surface area of the box

Step-by-step explanation:

we know that

The surface area of the box is equal to

SA=2B+PH

where

B is the area of the base

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we have

L=7\frac{3}{4}\ in=\frac{7*4+3}{4}=\frac{31}{4}\ in

W=3\frac{1}{4}\ in=\frac{3*4+1}{4}=\frac{13}{4}\ in

H=3\frac{7}{8}\ in=\frac{3*8+7}{8}=\frac{31}{8}\ in

<em>Find the area of the base B</em>

B=LW

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<em>Find the perimeter of the base P</em>

P=2(L+W)

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<em>Find the surface area</em>

SA=2(\frac{403}{16})+22(\frac{31}{8})

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