3 years ago

Solve the following system of equations using substitution, elimination, or elimination by multiplication.

1 answer:

3 0

Answer: (-4, 8)

Explanation:
2x - 7(2x + 16) = -64
2x - 14x - 112 = -64
-12x = 48
x = -4
y = 2(-4) + 16
y = -8 + 16
y = 8

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Alika [10]

Answer:

1) 19

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3 years ago

Which equation represents a line that intersects the line 2y − 4x = 3? A.-2y + 4x = 1 B. 3y − 6x = 6.5 C. y − 2x = 3 D. -2y − 4x

irga5000 [103]

Convert all the equations to slope-intercept form:
$2y-4x=3 \ \ \ |+4x \\
2y=4x+3 \ \ \ |\div 2 \\
y=2x+\frac{3}{2}$

$A. \\
-2y+4x=1 \ \ \ |-4x \\
-2y=-4x+1 \ \ \ |\div (-2) \\
y=2x-\frac{1}{2} \\ \\
B. \\
3y-6x=6.5 \ \ \ |+6x \\
3y=6x+6.5 \ \ \ |\div 3 \\
y=2x+\frac{13}{6}$

$C. \\
y-2x=3 \ \ \ |+2x \\
y=2x+3 \\ \\
D. \\ 
-2y-4x=3 \ \ \ |+4x \\
-2y=4x+3 \ \ \ |\div (-2) \\
y=-2x-\frac{3}{2}$

Lines A, B and C have the same slope as the line 2y-4x=3, so they are parallel and don't intersect it.
Line D has another slope, so it intersects the line 2y-4x=3.
The answer is D.

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4 years ago

Round 171,936 to the nearest ten thousand

hodyreva [135]

Answer:

Rounding = 170,000

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3 years ago

Read 2 more answers

Jenna is going at a constant rate of 4 miles per hour. It takes her 2 hours to get to her destination. How long would it take to

fgiga [73]

Answer:

6hrs

Step-by-step explanation:

because 4-2hrs 4x3=12 so it's 8

and it's fall guys

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3 years ago

Read 2 more answers

Complete factor of 12m+60

Alona [7]

You can factor a 12 out from both. 12 goes into 12m 12 times and 12 goes into 60 5 times. So you would pull it out front:

12(m+5)

That's as far as you can take it. Do you have to set it equal to 0, or some other number??

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3 years ago