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3 years ago

Solve by combining through the process of elimination

Mathematics

1 answer:

QveST [7]3 years ago

6 0

Answer:

2x+2y=6

Step-by-step explanation:

-4x + -2y = -18

2x + 3y = 24

2x + 2y = 6

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PLEASE HELP!!!! I WILL MARK BRAINLYEST!!!!

shusha [124]

True they are equivalent fractions both are divided by -3 to get 14/15

8 0

3 years ago

Read 2 more answers

Find the area of the shaded region.

lbvjy [14]

Answer:

$48\pi\\\approx 150.796$

Step-by-step explanation:

1.Approach

To solve this problem, find the area of the larger circle, and the area of the smaller circle. Then subtract the area of the smaller circle from the larger circle to find the area of the shaded region.

2.Find the area of the larger circle

The formula to find the area of a circle is the following,

$A=(\pi)(r^2)$

Where (r) is the radius, the distance from the center of the circle to the circumference, the outer edge of the circle. ( $\pi$ ) represents the numerical constant (3.1415...). One is given that the radius of (8), substitute this into the formula and solve for the area,

$A_l=(\pi)(r^2)\\A_l=(\pi)(8^2)\\A_l=(\pi)(64)$

3.Find the area of the smaller circle

To find the area of the smaller circle, one must use a very similar technique. One is given the diameter, the distance from one end to the opposite end of a circle. Divide this by two to find the radius of the circle.

8 ÷2 = 4

Radius = 4

Substitute into the formula,

$A_s=(\pi)(r^2)\\A_s=(\pi)(4^2)\\A_s=(\pi)(16)$

4.Find the area of the shaded region

Subtract the area of the smaller circle from the area of the larger circle.

$A_l-A_s\\=64\pi - 16\pi\\=48\pi$

$\approx150.796$

5 0

3 years ago

How much longer will it take her to finish payin her bill?

Reika [66]

I would say, C.

hope this helps:)

3 0

3 years ago

What would be the value of expressing something like the national debt in scientific notation? What information would be lost in

Vikki [24]

As of January 8, 2015, the U.S. is $18.1 trillion in debt. (Source: National Priorities Project)

1 Trillion

= 1 Thousand Billion

= 1,000,000,000,000

= 10¹²

---------------------------

U.S National debt currently stands at:

$ 18.1 x 10¹²

*What information would be lost? Well firstly the 0's. The 0's put the size of the number into perspective. The word "trillion" would also be taken out of the picture, once again altering the perspective of the number.

Personally I'd prefer to hear "18.1 Trillion Dollars". Sounds more interesting.

8 0

3 years ago

Name an angle supplementary to Please help I suck at this!!

Basile [38]

Answer:

<BOD

Step-by-step explanation:

Supplementary angles add up to 180, but remember that a 180 degree angle is also just a straight line! <AOB takes up half of Line AD, while we can see that <BOD takes up the other half of the line.

5 0

3 years ago