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luda_lava [24]
3 years ago
14

Which of the following is a solution to the system of linear equations below?

Mathematics
2 answers:
Inessa [10]3 years ago
6 0

Its C.

If we substitute x=2 and y=-5 into C we get

2(2) = 4 and 15-11 = 4

2(-5) = -10 and 6(2) - 22 = -10

Ronch [10]3 years ago
5 0

Hello!

First, let's solve the second equation for y.

2y=6x-22

Divide both sides by 2.

y=3x-11

Now we can plug this into the first equation to solve for x.

2x= -3(3x-11)-11

2x=-9x+33-11

2x=-9x+22

Subtract 9x from both sides.

-11x=22

Divide both sides by -11

x=-2

Now we plug this into the simplified version of the second equation.

y= 3(2)-11

y=6-11

y=-5

Therefore, our answer is D. (-2,-5)

I hope this helps!

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If the measure of angle 2 is 120 degrees, find the measure of angle 4.
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Answer:

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8 0
2 years ago
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Yanka [14]

Answer:

Length of the bold sector: 40.3ft

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Step-by-step explanation:

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Finding the sector area: Assuming that pi=3.14, the area of the circle is 615.44 sq. ft. The ratio of the sector area to the area of the whole circle is 165:360. (615.44 x 165)/360=282.08, rounded to the nearest 100th.

3 0
2 years ago
If u know this help me I got a lot of homework 6 grade work
Svet_ta [14]
Hello! I can help you!

22. Okay. What we need to do for this one is subtract fraction.l, because we are looking for how much more the second container holds than the first. We need to covert them to like denominators, which in this case is 8 5 3/4 = 5 6/8. Because 6/8 is less than 7/8, we need to regroup by adding 8 and turning the 5 into a 4. The problem would become like this: 4 14/8 - 1 7/8. When you subtract both numbers, you get 3 7/8. There. The second container holds 3 7/8 more gallons of water than the first.

23.

a. 15 student speeches will last 1 1/2 minutes each. In this case, we just simply multiply the fractions by multiply straight across. Multiply the top numbers together and the bottom numbers together. 1 1/2 is 3/2 a an improper fraction. Make 15 have a denominator of 1. 15/1 * 3/2 is 45/2 or 22 1/2 as a mixed number. It will take 22 1/2 minutes to give the speeches.

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