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bagirrra123 [75]
3 years ago
8

The science center has 200 people in attendance on Monday. The center expects Saturday's attendance to be 140

Mathematics
2 answers:
sammy [17]3 years ago
8 0

Answer:

A

Step-by-step explanation:

Molodets [167]3 years ago
5 0

<em><u>Answer:</u></em>

Natasha should have multiplied 140 by 2

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-9x-6y=15,9x-10y=145
vazorg [7]

-9x-6y=15

9x-10y=145

Find y first by eliminating the x.

Add the two equations together.

-9x+9x-6y+-10y=15+145

-6y+-10y=15+145

-6y-10y=160

-16y=160

divide both sides by -16 to get +y

-16y/-16=160/-16

y=-10

Use the substitution method to find x

-9x-6y=15

-9x-6(-10)=15

Do the bracket first

-9x+60=15

Move +60 to the other side. Sign changes from +60 to -60.

-9x+60-60=15-60

-9x=-45

Divide both sides by -9

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Answer:

( 5,-10)

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3 years ago
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Answer:

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2 years ago
solve x^2-8x=20 by completing the square. Which is the solution set of the equation? a {2, 10} b {-2, 10} c {2, -10} d {-2, -10}
torisob [31]

Answer:

B is the correct answer.

Step-by-step explanation:

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