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3 years ago

2x+y=1 and 2x+y=-3 in graphing,Substitution,and elemination

Mathematics

1 answer:

earnstyle [38]3 years ago

5 0

2x+y=1
-2x-y=3

0¥4

y=-2x+1
y=-2x-3

-2x+1=-2x-3

0¥4

The answer to the question is no solution

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Albert multiplied a whole number by a fraction. The whole number is greater than one. The fraction is greater than zero and less

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What are the answer options?

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3 years ago

NEED HELP WITH THESE QUESTIONS

amm1812

For this case we must solve the following questions:

Question 1:

We should simplify the following expression:

$\frac {\frac {m ^ 2 * n ^ 3} {p ^ 3}} {\frac {mp} {n ^ 2}} =$

Applying double C we have:

$\frac {m ^ 2 * n ^ 3 * n ^ 2} {mp * p ^ 3} =$

By definition of multiplication of powers of the same base we have to place the same base and add the exponents: $\frac {m ^ 2 * n ^ 5} {m * p ^ 4} =$

Canceling common terms:

$\frac {mn ^ 5} {p ^ 4}$

Answer:

Option A

Question 2:

We should simplify the following expression:

$\frac {3xyz ^ 2} {6y ^ 4} * \frac {2y} {xz ^ 4}$

So, we have:

$\frac {3xyz ^ 2 * 2y} {6y ^ 4 * xz ^ 4} =\\\frac {6xy ^ 2z ^ 2} {6y ^ 4xz ^ 4} =$

Simplifying common terms:

$\frac {1} {y ^ 2z ^ 2}$

Answer:

Option D

Question 3:

We factor the following expressions to rewrite the experience:

$r ^ 2 + 7r + 10$ : We look for two numbers that multiplied give 10 and added 7:

$(r + 5) (r + 2)$

$r ^ 2-5r-50:$ We look for two numbers that multiplied give -50 and added -5:

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Rewriting the given expression we have:

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We simplify common terms in the numerator and denominator we have:

$(r + 2)$

Answer:

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3 years ago

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2 years ago

Base your answer on Betty is thinking of two consecutive integers whose sum is 41.

mel-nik [20]

Answer:

let the numbers be, x and x+1 ( as it is consecutive number the next number will have 1 more than the number )

sum = 41

so, x + ( x + 1 ) = 41

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2x = 41 -1 = 40

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x = 40/2 = 20

x = 20

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so the consecutive numbers whose sum is 40 are, 20 and 21

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Gnesinka [82]

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