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igomit [66]
4 years ago
5

When solving the system of equations, x + 2y = 15 which expression could be substituted 5x + y = 21for x in the second equation?

Mathematics
1 answer:
IRISSAK [1]4 years ago
3 0
X=3 Y=6

5 x 3 = 15
15 + 6 = 21

3 + (2 x 6) = 15
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Factor completely 2x5 + 10x4 - 22x3.
PIT_PIT [208]

Answer:  2x³(x² + 5x - 11)

<u>Step-by-step explanation:</u>

2x⁵ + 10x⁴ - 22x³

Factor out the GCF (2x³)

2x³(x² + 5x - 11)

Since there are no values whose product is -11 and sum is +5, this cannot be factored further.

4 0
3 years ago
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aniked [119]

Answer:

I) If method I is used, population of generalization will include all those people who may have varying exercising habits or routines.  They may or may not have a regular excersing habit.  In his case sample is taken from a more diverse population

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Step-by-step explanation:

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5 0
3 years ago
The given curve is rotated about the y-axis. find the area of the resulting surface. y = 1 3 x3/2, 5 ≤ x ≤ 12
Katyanochek1 [597]
The area of the resulting figure will be given by:
∫f(x)dx
f(x)=13/2x^3
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7 0
3 years ago
Suppose we select, without looking, one marbles from a bag containing 4 red marbles and 10 green marbles.what is the probability
OlgaM077 [116]
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5 0
3 years ago
Refer to Expression 1 and Expression 2.
TiliK225 [7]

Expression 1 is 25

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First simplify all the exponents to get 6*7 - 9 * 9 + 64 and then multiply the two numbers to get 42 - 81 + 64 and just add = 25

For expression 2, if you put the parantheses around (5+4)*2+6-2*2-1, it'll be 19

(5+4)*2+6-2*2-1

9*2+6-2*2-1

18+6-4-1

24-5

19

Remember order of operations

5 0
3 years ago
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