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vlada-n [284]
3 years ago
11

Which is the right answer?????

Mathematics
1 answer:
Nutka1998 [239]3 years ago
6 0

Answer:

x = 21

Step-by-step explanation:

add the two equations together which would would equal 180 because they are mirrored

3x + 12 +5x =180

8x + 12 = 180

8x = 168

x = 21

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A cell phone is on sale for 30% off. If the sale price is $239.89, what is the original price?
Semenov [28]

Answer:

$342.7

Step-by-step explanation:

Let the sale price be x.

So,

x - 30% of x = $239.89

x - 30/100*x = 239.89

(100x-30x)/100 = 239.89

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x = 23989/70

x = $342.7

sale price = $342.7

8 0
3 years ago
Add 1} + (-5) using the number line.
gizmo_the_mogwai [7]

Answer:

1/2

Step-by-step explanation:

1 1/3+(-5/6)

1 1/3=4/3

4/3+(-5/6)

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simplify

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6 0
3 years ago
A is what percent of B?<br><br>d)<br><br>A = 8 oz, B = 1.5 lb <br>Plz help need by today
creativ13 [48]

Answer:

33%  Decimal form: .333333 repeating.

Step-by-step explanation:

Took test. I see the question you was trying to do.

8 0
3 years ago
Convert the function into intercept form. Show your work. y=-x^2+5x+36
UkoKoshka [18]
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Your answer would be </span>y=-(x-9)(x+4).
7 0
3 years ago
Identify the domain of the function shown in the graph.
Svetach [21]

Answer:

A. x \geq 0

Step-by-step explanation:

The domain of a function is the set of x-values.

6 0
1 year ago
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