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Crank
3 years ago
8

2x+3y=1, -x+2y=-4 solve using substitution method

Mathematics
1 answer:
ollegr [7]3 years ago
8 0

Step-by-step explanation:

1) 2x+3y-3y=1-3y. -x+2y= -4

2x/2=1-3y/2. -(1-3y/2)=-4

x=1-3y/2. -1+3y/2= -4

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

x=1+6/2 3y/2×2/3= -3×2/3

x=7/2 y= -2

S.s{ 7/3,-2}

2). -4x-6y+6y=7-6y. 4x+y= -2

-4x/-4=7-6y/-4. 4(-7-6y/4)+y= -2

x= -7-6y/4. -7-6y+y = -2

x= -7-6/4 -5y/5= 5/5

x=-13/4 y= 1

S.s { -13/4, 1 }

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Find the area of a hexagon with sides of length 12 cm
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The answer is 374 cm²

Area (A) of a hexagon with side a is:
A= \frac{3 \sqrt{3} }{2}  a^{2} \\  \\ 
a = 12cm \\  \\ 
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5 0
3 years ago
The west side soccer league has 186 players. They expect a 7.5% increase in players for at least the next 4 years. How many play
vivado [14]

Answer:

They will have 200 players at that point.

Step-by-step explanation:

7.5% increase

This means that the amount will be 100% + 7.5% = 107.5% = 1.075 of the original amount, that is, the original amount multiplied by 1.075.

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Rounding up:

They will have 200 players at that point.

5 0
3 years ago
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3 years ago
Read 2 more answers
10 points - questions #13-15. W/ work please.
vekshin1
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14. WZ has a measure of 24 since the parallel side is also 24 (not too sure about this one)
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8 0
3 years ago
G is the centroid and BE = 12. Find BG and GE.
Alona [7]
The centroid is the intersection point <span>of the medians.
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</span><span>
So answer: </span>BG = 4, GE = 8
7 0
3 years ago
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