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Mariana [72]
3 years ago
10

5x - 2y = 3 -5x + 4y = 9 Solve the system of equations.

Mathematics
1 answer:
harkovskaia [24]3 years ago
6 0
5x - 2y = 3
-5x + 4y = 9
_________
2y =12
2y/2= 12/2
y = 6

5x - 2(6) = 3
5x -12 = 3
5x -12+12 = 3+12
5x = 15
5x/5 = 15/5
x = 3

Check
-5(3) + 4(6) = 9
-15+24=9
9=9
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babymother [125]

Answer:

x = 20

Length = 20ft

Width = 12ft

Step-by-step explanation:

A = 240

x^2 - 8x = 240

x^2 - 8x - 240 = 0

x^2 - 20x + 12x - 240 = 0

x(x-20) + 12(x-20) = 0

(x+12)(x-20) = 0

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x = -12 (which we discard since x is a length)

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7 0
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Nataly [62]

Answer:

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Step-by-step explanation:

we have

y=-6x+2

y=x^{2}+11

we know that

The solution of the system of equations is the intersection point both graphs

using a graphing tool

the intersection point is (-3,20)

see the attached figure

therefore

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8 0
3 years ago
70.2 x 10<br> 6.702 x 10?<br> 7.02 x 100<br> 7.02 x 10?
Orlov [11]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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Tomtit [17]

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4 0
3 years ago
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Whitepunk [10]

Answer:

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Step-by-step explanation:

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6 0
2 years ago
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