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3241004551 [841]
3 years ago
15

Which terms could be used as the first term of the expression below to create a polynomial written in standard form? Check all t

hat apply.
+ 8r2s4 – 3r3s3


s5
3r4s5
–r4s6
–6rs5
Mathematics
2 answers:
mestny [16]3 years ago
5 0

Answer:

3r4s5 would be the best

Ugo [173]3 years ago
4 0

Answer:

3r^{4}s^{5}\\-r^{4}s^{6}

Step-by-step explanation:

<em>The standard form of a polynomial is when its term of highest degree is at first place.</em>

In this case, we have two variables. The grade of each term is formed by the sum of its exponents. That means both given terms have a degree of six. So, the right answers must have a higher degree.

Therefore, the right answers are the second and third choice, because their degrees are 9 and 10 respectively.

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The measures, in degrees, of the three angles of a triangle are given by 2x+1, 3x - 3, and 9x. What is the
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Answer:

Step-by-step explanation:

27 degrees

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3 years ago
PLZ HELP! A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a tr
Kruka [31]

Answer:

3.8

Step-by-step explanation:

A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains.

If a trip of 300 miles took 3 hour and 48 minutes, how much of it was through the mountains?

Let d = distance traveled at 37.5 (thru the mountains)

then

(300-d) = distance traveled at 90 mph

Write a time equation, time = dist/speed

change 3 hr 48 min to hrs: 3 + 48/60 = 3.8 hrs

plain time + mountain time = 3.8 hrs

%28300-d%29%2F90 + d%2F37.5 = 3.8

Multiply 90*37.5

3375*%28300-d%29%2F90 + 3375*d%2F37.5 = 3.8(3375)

cancel the denominator

37.5(300-d) + 90d = 12825

11250 - 37.5d + 90d = 12825

52.5d = 1575

d = 1575/52.5

d = 30 mi thru the mountains

Check this, find the distance on the plain

300-30 = 270 mi

Find the actual time at each speed

270/90 = 3 hrs

30/37.5 = .8 hrs

-----------------

total time: 3.8 hrs

7 0
3 years ago
Please help asap will mark brainliest
steposvetlana [31]
The answer is -6x^2 + 7x, or answer choice A.
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