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Bas_tet [7]
2 years ago
9

Does it take fewer steps to determine the solution to the system of equations using elimination substitution? What is the soluti

on?

Mathematics
1 answer:
nignag [31]2 years ago
8 0

Answer:

Step-by-step explanation:

Note that one equation has -2y and the other has +2y. The fastest solution is to add the equations together. The two  terms will cancel out, eliminating the y terms.

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Find two consecutive odd integers whose product is 99
Illusion [34]
Let x be the first odd number.

Second odd number will be x+2

Proof:

If 3 (was) the first odd number, 3+2 would be the next which is 5.

So,

(x) (x+2) = 99
xsquare + 2x = 99
xsquare +2x - 99 = 0
xsquare +11x - 9x -99 = 0
x(x +11) -9(x + 11) = 0
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3 years ago
Which graph represent y= x2 - 2x -3
Stella [2.4K]
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3 years ago
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anygoal [31]

Answer:

\sf  y=7\frac{2}{3} and \sf x = \frac{2}{3}

Explanation:

\sf (1)  \  \  (2x+y = 9)

\sf (1) \ \  (2x+5y = 37)

<u>solve for y</u>:

\sf 2x + y = 9

\sf 2x + 5y = 37

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

\sf 0x + 6y = 46

\sf 6y = 46

\sf  y=\frac{23}{3}

\sf  y=7\frac{2}{3}

<u>solve for x</u>:

\sf 2x + y = 9

\sf 2x = 9 - y

\sf 2x = 9 - \frac{23}{3}

\sf 2x = \frac{4}{3}

\sf x = \frac{2}{3}

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2 years ago
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