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ella [17]
3 years ago
15

Can someone please help me with the evens, thank you!

Mathematics
1 answer:
lbvjy [14]3 years ago
5 0
Which ones do u need help on? 
all?
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A cube has a volume of 216 cubic inches. What is the length of each edge of the cube?
KatRina [158]

Volume of a cube = (edge)^3

In this problem,

Volume = 216in^2

Edge = ?

Let's plug our values into the formula above.

216in^3 = (edge)^3

Take the cbrt of both sides.

6in = edge

The length of each edge = 6in

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3 years ago
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Question 3
BigorU [14]

Answer:

  30 mph

Step-by-step explanation:

time = distance/speed

If x represents Jane's speed along the summit then her total exploration time is ...

  12/x + 40/(x -5) = 2 . . . . . hours

Multiplying by (x)(x -5), we get ...

  12(x -5) +40(x) = 2(x)(x -5)

Dividing by 2 and subtracting the left side gives ...

  x^2 -31x +30 = 0

  (x -30)(x -1) = 0 . . . . . factor

Solutions are x = 30 and x = 1, values of x that make the factors zero. A speed of 1 mph makes no sense in this problem, so ...

Jane's speed along the summit was 30 mph.

3 0
3 years ago
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How to round 54.9 two decimal places
slega [8]

Answer:

54.90

Step-by-step explanation:

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3 years ago
Line j passes through points (10, 10) and (1, 3). Line k is parallel to line j. What is the slope of line k?
SOVA2 [1]

Answer:

= (10-3) ÷ (10-1) = 7 ÷9 = 7/9

Step-by-step explanation:

As they are parallel, their slopes are the same. So if we find slope of line j we find slope of line k when we have two points of one line like (x1 , y1) and (x2 , y2) the slope of that line is (y2-y1) ÷ (x2-x1)

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N+7&lt;-3<br> help lollllll
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Answer:

The answer to n+7<-3 is n<-10 I hope this helps

Step-by-step explanation:

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