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Archy [21]
3 years ago
5

FOR 12 POINTS I NEED HELP ASAP! Consider the system of linear equations. 5 x + 10 y = 15. 10 x + 3 y = 13 To use the linear comb

ination method and addition to eliminate the x-terms, by which number should the first equation be multiplied? –2 Negative one-half One-half 2
Mathematics
1 answer:
Romashka [77]3 years ago
8 0

Answer:

Do you mean which equation should the 5x+10=15 be multiplied to?

it would be -2

Step-by-step explanation:

This is because 5 times -2 is -10

and so when you add the (now) x value of the first equation to the x value of the second equation, it gets 0

which makes it eliminated!

-10x+10x=0

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A game field is 360 feet long. The practice field is 2/5 shorter than the practice field. How long is the game field?feet
vlabodo [156]

Answer:

The practice field is 144 feet long.

Step-by-step explanation:

360 x 2/5 = 144

(You would multiply these numbers NOT divide!)

To check my math:

2/5 = 0.4

144/360 = 0.4

By doing the above check, I know the two equations are the same. By seeing this I can know that the answer is correct.

4 0
3 years ago
The area of the shaded region in the shape to the right
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3 years ago
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valina [46]
I think it’s y=x+4.
8 0
2 years ago
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BlackZzzverrR [31]
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5 0
3 years ago
F(x) = -2x^5 + x^4 + x^2 -2; find f(-3) and f(4)
Alekssandra [29.7K]

Answer:

f(-3) = 574

f(4) = -1778

Step-by-step explanation:

f(x) = -2x^5 + x^4 + x^2 -2

f(-3) = -2(-3)^5 + (-3)^4 + (-3)^2 -2

\implies f(-3) = -2(-243) + 81 + 9 -2

\implies f(-3) = 486 + 81 + 9 -2

\implies f(-3) = 574

f(4) = -2(4)^5 + (4)^4 + (4)^2 -2

\implies f(4) = -2(1024) + 256 + 16 -2

\implies f(4) = -2048 + 256 + 16 -2

\implies f(4) =-1778

8 0
2 years ago
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