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elena55 [62]
3 years ago
5

In order to solve the following system of equations by subtraction, which of the following could you do before subtracting the e

quations so that one variable will be eliminated when you subtract them? 4x-2y=7 and 3x-3y=15
Mathematics
2 answers:
Whitepunk [10]3 years ago
7 0
I can't see the options, but you would need to multiply (4x - 2y = 7) by 3, and (3x - 3y = 15) by 4 so that you get 12x in both equations. Then when you subtract, you eliminate 12x. I hope this helps!
Naddik [55]3 years ago
5 0

Answer:multiply top by 3 and bottom by 4

Step-by-step explanation:

APEX

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Answer:

-3

Step-by-step explanation:

divide 7 on both sides -21/7 = -3

w=-3

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3 years ago
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I need help on this one I have the image attached
mart [117]

Answer:

x = 40

Step-by-step explanation:

The ADF is 90 degrees so the CAF will also be 90

So you do

( x + 15 ) + 90 + 35 = 180

x + 15 + 90 + 35 - 90 = 180 -90

x + 15 + 35 = 90

x + 15 + 35 - 35 = 90 - 35

x + 15 = 55

x + 15 - 15 = 55 - 15

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4 0
3 years ago
Bess drew a rectangular prism that is 12 units long, 8 units wide, and 13 units tall. What is the volume of the rectangular pris
Katena32 [7]

Answer:

D. 1,248 cubic units

Step-by-step explanation:

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5 0
3 years ago
A 15-foot ladder leans against a house. The bottom of the ladder is 7 feet from the house. To the nearest degree, what angle doe
max2010maxim [7]
The ladder is forming a right triangle with the house. In this right triangle the hypotenuse is the measure of the ladder, and the distance between the house and he ladder is one of the sides of the triangle. To find the angle, \alpha, that the ladder is making with the ground, we are going to use a trig function that relates the adjacent side of our angle with the hypotenuse. That trig function is Cosine. 
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We can conclude that the ladder make with the ground a 62° angle.
7 0
3 years ago
: Ruben put an empty cup underneath a leaking faucet. After 1 1 2 112 hours, Ruben had collected 1 4 14 cup of water. What is th
slamgirl [31]

Answer:

The rate is \frac{1}{6} cups per hour

Step-by-step explanation:

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Using unitary method:

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Hence, the rate is \frac{1}{6} cups per hour

6 0
3 years ago
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