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dimulka [17.4K]
3 years ago
11

Can anyone answer 2 through 4 for me ?

Mathematics
1 answer:
Andreyy893 years ago
4 0
I know the answer for two.All you do is 9 times 3 times 2
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What is the negative reciprocal of 2
Zinaida [17]

Answer:

- \frac{1}{2}

Step-by-step explanation:

The reciprocal of a number n is \frac{1}{n}

The negative reciprocal is the negative of this, thus

reciprocal of 2 is - \frac{1}{2}

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Why is scientific notation useful in economics?
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Solve x + 3y = 9. 3x – 3y = –13
Sloan [31]
Question \ 1) \ x + 3y = 9 


x=9-3y
 
  |Subtract \ 3y \ from \ both \ sides| 

Question \ 2) \ 3x - 3y = -13 


3(x-y)=-13
 
   |Factor \ out \ the \ common \ term \ 3|

x-y= \dfrac{13}{3}   |Divide \ both \ sides \ by \ 3|

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7 0
3 years ago
Geometry 1.4 - Segment Addition Postulate & Midpoint
Roman55 [17]

Answer:

28

Step-by-step explanation:

AB + BC = AC

14 + 3x-4 = 4x+4

Combine like terms

10 +3x = 4x+4

Subtract 3x from each side

10+3x-3x = 4x+4-3x

10 = x+4

Subtract 4 from each side

10-4 =x-4+4

6 =x

We want AC

AC = 4x+4 = 4*6+4 = 24+4 = 28

4 0
3 years ago
Find the volume of the triangular prism 3cm 4 cm 5cm 11cm
vichka [17]

Answer:

82.5cm²

Step-by-step explanation:

The volume of a triangular prism is : V = 1/2 * a * c * h

V = 1/2 * 3 * 5 * 11

= 165/2

= 82.5cm²

4 0
3 years ago
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