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VikaD [51]
4 years ago
11

Solve for the variable 90-b=90.8

Mathematics
1 answer:
MAXImum [283]4 years ago
4 0

Answer:

-.8

Step-by-step explanation:

when subtracting a negative you add it.

90 - (-.8) = 90 + .8

90 + .8 = 90.8

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The volume of a cylinder is 540π ft3. The height is 15 ft. What is the diameter of the cylinder?
Nonamiya [84]
D = 2r

V = A*h

540π = πr²*h

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540*4 = 15d²

d² = 2160 / 15

d² = 144

d = √144

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3 years ago
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Find the midpoint of the line segment HS if H=(5,0) and S=(3,-2)
liubo4ka [24]
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4 years ago
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Which of the following coordinate pairs make the equation x - 9y = 12 true?
Ne4ueva [31]

Options:

(12,0)     (0,12)    (3,-1)    (0,-4/3)

Answer:

(12,0) ,  (3,-1)  and (0,-4/3)

Step-by-step explanation:

Given

x - 9y = 12

Required

Which option is true?

A coordinate point is of the form; (x,y)

So, we have to substitute the x and y values in the given equation.

A. For (12,0)

x = 12 and y = 0

x - 9y = 12 becomes

12 - 9*0 = 12

12 - 0 = 12

12 = 12

<em>This is true</em>

B. For (0,12)

x = 0 and y = 12

x - 9y = 12 becomes

0 - 9*12 = 12

- 9*12 = 12

- 108 = 12

<em>This is false</em>

C. For (3,-1)

x =3 and y = -1

x - 9y = 12 becomes

3 - 9*-1 =12

3 + 9 =12

12 = 12<em></em>

<em></em>

<em>This is true</em>

D. For (0,-4/3)

x = 0 and y = -\frac{4}{3}

x - 9y = 12 becomes

0- 9*-\frac{4}{3} = 12

0+ 9*\frac{4}{3} = 12

0+ 3*4 = 12

0+12 = 12

12 = 12

<em></em>

<em>This is true</em>

<em></em>

<em>Hence, (12,0) ,  (3,-1)  and (0,-4/3) are true values of the equation</em>

5 0
3 years ago
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dedylja [7]

Answer:

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A) Collect like terms

0=0

B) Collect like terms

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A and B both correct

6 0
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