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Vsevolod [243]
3 years ago
8

I do not understand this im lost

Mathematics
2 answers:
mote1985 [20]3 years ago
7 0
In such type of questions, all that you are supposed to do is, use basic mathematics to eliminate any one of the given two variables. Check out the equations if in case you can multiply any of the given ones with a -1 and add the two equations,eliminating one of the variables.
tester [92]3 years ago
4 0
2x-3y=9
-5x-3y=30
Multiply the first equation by negative one to cancel out the Ys
-2x+3y=-9
-5x-3y=30
Add the equations
-7x=21
X=-3 plug in X in one of the original equations

2(-3) -3y=9
-6-3y=9
-3y=15
Y=-5
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Find the surface area of a rectangular prism with a height of 6 inches, a width of 7 inches, and a length of 13 inches.
madam [21]
The answer is B)422 ,you're welcome :)
5 0
3 years ago
-30 < x/-4 must be simplified​
Norma-Jean [14]

Answer:

120 > x

Step-by-step explanation:

multiply -4 on both sides, -30 * -4 = 120

since you multiplied by a negative you change the sign

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3 years ago
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What is the equation of the line that passes through the point (-6, -2) and has a
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Answer:Question 135184: Find the equation of the line with slope 6 that goes through the point (6,4). Write your answer in slope-intercept form. b=-32 ANSWER FOR THE Y INTERCEPT. Y=6X-32 LINE EQUATION

Step-by-step explanation:

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2 years ago
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George plans to cover his circular pool for the upcoming winter season. The pool has a diameter of 20 feet and the cover extends
MariettaO [177]

For the circular cover we have:

A) The area is 379.94 ft²

B) The length of the rope must be 68.2 ft

<h3>How to get the area of the cover?</h3>

Remember that the area of a circle of radius R is given by the formula:

A = pi*R^2

Where pi = 3.14

In this case, the diameter of the pool is 20ft, then the radius is:

R = 20ft/2 = 10ft

And it must extend 12 inches beyond, then the radius of the cover must be:

R = 10ft + 12in

Now, we know that 1ft = 12 in, then we can rewrite the radius as:

R = 10ft +1ft = 11ft

Then the area of the cover is:

A = 3.14*(11ft)^2 = 379.94 ft^2

B) now we want to get the length of the rope, we know that the rope runs along the cover, then the length of the rope must be equal to the circumference of the cover.

Remember that the circumference of a circle of radius R is:

C = 2*pi*R

Then the length of the rope will be:

C = 2*3.14*11ft = 68.2ft

If you want to learn more about circles:

brainly.com/question/1559324

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7 0
1 year ago
I need help pls pls pls pt.2
Eva8 [605]

Answer:

where is the Worksheet

Step-by-step explanation:

there is no Worksheet

3 0
2 years ago
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