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Firlakuza [10]
3 years ago
7

To eliminate the terms and solve for y in the fewest steps, by which constants should the equations be multiplied by before addi

ng the equations together? First equation: 9x + 3y = -18 Second equation: 8x + 7y = 10 The first equation should be multiplied by 3 and the second equation by 7. The first equation should be multiplied by -3 and the second equation by -7. The first equation should be multiplied by - 7 and the second equation by 3 . The first equation should be multiplied by -7 and the second equation by -3.
Mathematics
2 answers:
icang [17]3 years ago
7 0

Answer:

C. The first equation should be multiplied by - 7 and the second equation by 3

Step-by-step explanation:

Alex17521 [72]3 years ago
6 0

Answer:

The first equation should be multiplied by - 7 and the second equation by 3

Step-by-step explanation:

Indeed, let s multiply the first equation by -7

-7*9x-7*3y=7*18

and the second one by 3

3*8x+3*7y=3*10

when we add both the terms in y will be -7*3y+3*7y= 0

and then we can solve on x

hope this helps

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Use the information in the diagram to find the length of segment AD. Round your answer to the nearest hundredth.
Lana71 [14]

Based on the lengths of the given triangles and the length of segment BD, the length of segment AD is 22.20.

<h3>What is the length of segment AD?</h3>

The triangle ABC is a right angled triangle with segment AB being the hypothenuse.

We can therefore find this length using the Pythagoras Rule:

Hypothenuse ² = a² + b²

Hypothenuse ² = 28.6² + 23.2²

Hypothenuse ² = 1,356.20

Hypothenuse = √1,356.20

= 36.83

Length of AD:
= AB - BD

= 36.83 - 14.60

= 22.2

Find out more on the Pythagorean theorem at brainly.com/question/343682.

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Answer:

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Step-by-step explanation:

The median can be seen inside the rectangle in the box-and whisker plot. It is the point in the middle, cutting the rectangle in two. Looking at the plots, Oakdale has a lower median.

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Allyson accidentally missed her turn on her way to visit her aunt. By the time she realized her mistake, she had been driving fo
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3 years ago
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Katyanochek1 [597]

Answer:

(f o g) (x) = 36x² + 3

(g o f) (x)  = 6x² + 18

Step-by-step explanation:

f(x) is x² + 3  

g(x) is 6x

(f o g) (x) means for all xs in f replace it with g(x) or 6x

(f o g) (x) = (6x)² + 3  - see 6x is in place of x and 6x is g(x)

(f o g) (x) = 36x² + 3

(g o f) (x)  = 6(x² + 3)  

(g o f) (x)  = 6x² + 18

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