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RoseWind [281]
2 years ago
6

12 = -3x - 21 What does x equal to?

Mathematics
2 answers:
riadik2000 [5.3K]2 years ago
5 0

Answer:

x is equal to -11.

Step-by-step explanation:

This is because you isolate x, and solve.

jonny [76]2 years ago
5 0
X=-11 bc math stuff

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Soft 2 1/3 - 3/4 equals
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1 7/12

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3 years ago
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How much do a dozen cookies weigh?
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0.43 oz

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7 0
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Andre has $ 90 dollars to spend on sneakers. This is 75% of the cost of the sneakers. How much more will the need? Solve and exp
goldenfox [79]

Answer:

I suppose the answer would be 120

Step-by-step explanation:

Well if 90 is 75% then 50% should be 60 and 25% should be 30.

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7 0
3 years ago
Find the missing dimension.
Alecsey [184]

Answer:

2 m

Step-by-step explanation:

Here the area and the lengths of the two parallel sides of this trapezoid are given:

A = 7m^2, b1 = 3 m and b2 = 4 m.  What's missing is the width of the trapezoid.

First we write out the formula for the area of a trapezoid:

       b1 + b2

A = --------------- * w, where w represents the width of the figure.

             2

We need to solve this for the width, w.  Multiplying both sides of the above equation by

     2

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

b1 + b2

results in

 2A

------------ = w

b1 + b2

Substituting 7 m^2 for A, 3 m for b1 and 4 m for b2 results in

        2(7 m^2)           14 m^2

w = ------------------ = ---------------- = 2 m

        (3 + 4) m             7 m

The missing dimension is the width of the figure.  This width is 2 m.

4 0
2 years ago
HELP!!! 30 points!
user100 [1]
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3 years ago
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