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Ostrovityanka [42]
3 years ago
7

PLEASE HELP! MATH! ​

Mathematics
1 answer:
RoseWind [281]3 years ago
5 0

t = 12r/(r+120)

t(r+120) = 120r

tr+120t = 120r

tr-120r = -120t

r(t-120) = -120t

r = -120t/(t-120)

r = 120t/(120-t)

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A catering service offers 4 appetizers, 9 main courses, and 7 desserts. A customer is to select 3 appetizers, 2 main courses, an
never [62]

Answer:

In 5040 ways.

Step-by-step explanation:

To solve this problem we will use combination without repetition which means:

C ( n k) = (n₁ k₁) (n₂ k₂) (n₃ k₃) = (4 3)  (9 2)  (7 3) =

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It can be done in 5040 ways.

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3 years ago
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Luda [366]
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3 years ago
Solve for x. 3x ^2 -4 = 8
LenKa [72]

Answer:

x = ±2

Step-by-step explanation:

3x ^2 -4 = 8

Add 4 to each side

3x ^2 -4+4 = 8+4

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5 0
4 years ago
Read 2 more answers
4’1” - 1’ 10” whats is
cluponka [151]

Since inches are out of 12 this would be

4 ft - 1 ft = 3 ft

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3 feet is also 2 ft and 12 inches

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So the answer is 2 feet and 3 inches

Hope this helps

-GoldenWolfX

7 0
4 years ago
C is located at (12, -10). D is located at (-2, 18). What is the midpoint of CD?
Tanzania [10]

Answer:

<h2>(5,4)</h2>

Step-by-step explanation:

Let us all know that in order to find the midpoint of a segment we can use the midpoint formula

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now let us put in the values into the formula

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now lets simplify

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(5,4)

I hope this helped you :)

4 0
3 years ago
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