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3 years ago

Explain why the equation is not linear 2x^2+y=7

Mathematics

1 answer:

Vladimir79 [104]3 years ago

8 0

Answer:

Step-by-step explanation:

Well anything with an exponent not equal to one for both x and y is not linear. That means that c is not equal to 0 as well.

D: is not true. x + y = 4 is linear. The coefficients are both 1.

B: is false because x has a power of 2 on it. y = 2^x is not linear either, but that is not relevant in this question.

A: See the remark above. The statement is true, but it does not make the equation linear.

I would pick C, but the question is very poorly worded. A is hard to get rid of. It is simply not what would make an equation linear.

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3 years ago

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Answer:

This question cannot be answered with the information given

Step-by-step explanation:

You did not include the possibilities of each apple being selected.

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3 years ago

Solve the following linear system by graphing <br> 4x+5y=10<br> 3x-3y=21

Inga [223]

Answer:

y = 2

x = 5

Step-by-step explanation:

4x + 5y = 10 | ×3 |

3x - 3y = 21 | ×4 |

12x + 15y = 30

12x - 12y = 84

____________--

27y = -54

y = -54/27

y = 2

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3x - 3y = 21 | ×5 |

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3 years ago

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exis [7]

Answer:

Alex is reading faster by 5 more pages per hour.

Step-by-step explanation:

Alex's rate of reading is 1/2 pages per minute, or 1 page every 2 minutes. To convert his rate to pages per hour, we can divide 60 (minutes in an hour) by 2 (minutes it takes Alex to read a page) which is equal to 30 (pages read in an hour). Therefore, Alex is reading at 30 pages an hour and reading 5 more pages an hour than Sammie.

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2 years ago