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Rina8888 [55]
3 years ago
8

Find the sum and express it in simplest form. (3a^2 + 2a) + (5a^-a -7) ​

Mathematics
1 answer:
fredd [130]3 years ago
7 0

Answer:

8a^2+a-7

Step-by-step explanation:

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Determine which of the following equations, when graphed, intersect at the point (4, 0). Select all that apply. x - y = 4 -x - y
Elza [17]

Answer: only (x-y=4) and (x+y=4).


Step-by-step explanation:

Notice target point has y=0, so all terms with y are zero. Then all 6 equations reduce to m x = k, for various m and k. So calculate 4×m and compare to k six times.


x - y = 4 4=4 yes

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dedylja [7]

Answer:

B

Step-by-step explanation:

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3 years ago
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A band consists of 3 woodwinds for every 7 members of the band. The independent quantity represents the total members of the ban
IgorC [24]

Answer: k=\frac{3}{7}

Step-by-step explanation:

For this exercise it is important to remember the following:

The constant of proportionality, which is represented as "k", describe  the constant ratio of two quantities that are proportional (the independent and dependent variables).

In this case we know that the independent quantity represents the total members of the band and the dependent quantity represents the woodwind members of the band.

Since the band consists of 3 woodwinds for every 7 members of the band, we can conclude that the constant of  proportionality for this relationship is:

k=\frac{3}{7}

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3 years ago
Please help and explain why!!!!! Will mark as brainliest if correct!
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