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erica [24]
2 years ago
7

Solve by elimination -7x-20=-14 -2x+10y=-4

Mathematics
1 answer:
sweet-ann [11.9K]2 years ago
6 0
Mark brainliest please mark

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Can 57 rows be divided into a number of equal sections? explain how you found your answer?
Helen [10]

You need to find out if 57 can be divided evenly by a number other than 1 and 57.

57 is odd, so it is not divisible by 2.

The digits of 57 are 5 and 7. Add 5 + 7 to get 12. Since 12 is divisible by 3 (12/3 = 4), then 57 is also divisible by 3.

57/3 = 19

19 is a prime number, so the only factors of 57 are 1, 3, 19, 57.

57 rows can be divided into 19 sections of 3 rows each or 3 sections of 19 rows each.

8 0
3 years ago
500 POINTS PLEASE HELP FASTEST ANSWER WILL BE MARKED BRAINLIEST
diamong [38]

Answer:

Five number summary

Step-by-step explanation:

I just relearned this yesterday

8 0
2 years ago
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What is the justification for each step in the solution of the equation?
Marrrta [24]
4(4x + 6) - 7 = 77 - 4x......distribute thru the parenthesis
16x + 24 - 7 = 77 - 4x ...simplify
16x + 17 = 77 - 4x ...addition property of equality....add 4x to both sides
16x + 4x + 17 = 77 ...subtraction property ...subtract 17 from both sides
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20x = 60 ....division property....divide both sides by 20
x = 60/20
x = 3
7 0
3 years ago
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How do I find out how to work out , y=mx+c ???
hjlf
Y=mx+c isn't an equation to solve. It's the slope-intercept formula for graphing lines.
y and x are the variables, and m and c are the constants.
As an example, the line y=4x+2 looks like this:

3 0
3 years ago
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The length of a rectangle is (6x2 + 3x - 2) units, and its width is (x3 - 2x + 5) units. Part A: What is the area of the rectang
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<span>Part A: Area = length * width = (6x^2 + 3x - 2) * (x^3 - 2x + 5) Multiply it out and simplify.

part B: </span><span>Take the first term 6x^2 and multiply each of the term x^3, -2x & 5. Then take 3x and multiply each of the term x^3, -2x & 5. Do the same with -2. Then add like terms and simplify.</span>
6 0
2 years ago
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