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Tems11 [23]
3 years ago
7

2x-6y=12 and -5x+15y=-30 elimination

Mathematics
1 answer:
Reptile [31]3 years ago
8 0

Answer:

unsolvable because the second equation is just -2.5 times the first equation.

Step-by-step explanation:

2x-6y=12    then   2x=12+6y     x=6+3y

-5x+15y=-30

substitute x

-5(6+3y)+15y=-30

-30-15y+15y=-30

y=y

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Reduce 3272 to lowest terms.
zubka84 [21]

Answer:

If you reduce this to the lowest terms you get 4/9

Step-by-step explanation:

In order to simplify the fraction 32/72, you can divide each term by 8.

32/8 = 4

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Therefore, we get 4/9

5 0
4 years ago
Write the product of 0.4×0.4×0.4 in exponential form
bearhunter [10]
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To convert to exponential form, count how many times the number is multiplied by itself and make that number the exponent. In this case, the 0.4 is multiplied by itself 3 times, so our exponent is 3. 

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5 0
4 years ago
Is this angle complementary or supplementary or neither?
SpyIntel [72]

Answer:

Neither

Step-by-step explanation:

142 + 56 = 198º

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7 0
3 years ago
Read 2 more answers
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Citrus2011 [14]

Answer:

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Step-by-step explanation:

1) Write out the problem

-5+-10-41562*6

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-5+-10-249372

3) Solve -5+-10:

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4) Subtract:

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7 0
3 years ago
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How do you use congruence and similarity criteria to solve problems in geometric figures?
Zolol [24]

Answer: We are given that, between the triangles, two pairs of corresponding sides are proportional, and that a pair of corresponding angles are congruent. The angles that are congruent are the included angles of their respective sides. By the SAS Similarity Postulate, this is enough to prove that .

Step-by-step explanation:

8 0
4 years ago
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