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marshall27 [118]
3 years ago
7

When 9 times a number is

Mathematics
1 answer:
timurjin [86]3 years ago
7 0
11

9x+30=140-x
+x +x
___________
10x+30=140
-30 -30
___________
10x=110
Divide by 10 on both sides and boom
X=11
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Solve the following system of equations by substitution. 3x + 2y = -12 x = 2 A. (2, -9) B. (-2, -3) C. (3, 2) D. (2, 3)
Brilliant_brown [7]
Plugging it in, we get (3)(2)+2y=-12 and 6+2y=-12. Subtracting 6 from both sides, we get -18=2y and dividing by 2 we get y=-9  to get (2, -9) since x is first in the pair
4 0
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Find the volume of a right circular cone that has a height of 11.8 ft and a base with a radius of 16 ft. Round your answer to th
andreyandreev [35.5K]

Answer:

3161.8 cubic foot

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3 years ago
Use the formula d = ( r − c ) t to find c if d = 6 , r = 4 , and t = 2 . c=
Minchanka [31]

First, we are going to want to plug in the values we are given. In this case, we will end up with the equation:

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From here, we can solve the equation to find c:

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6 = 8 -2c

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-2 = -2c

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7 0
3 years ago
Which is the reciprocal of -13/7
Nataly [62]
The reciprocal of -13/7 should be -7/13
6 0
3 years ago
Please answer these two questions precisely :)
GuDViN [60]
1. A)
7x= 3(35)
7x= 105
105/7= 15
Therefore x=15

2. C)

4 0
3 years ago
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