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padilas [110]
2 years ago
10

A 900-kg compact car moving at 60 mi/hr has approximately 320 000 Joules of kinetic energy. Estimate its new kinetic energy if i

t is moving at 30 mi/hr
Mathematics
1 answer:
Doss [256]2 years ago
7 0
You need to divide 320000 by 2 since the speed was divided by 2. The final answer is ...... 160000 Joules.

I hope this helped!!!! :D
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38 kg of onions cost $144.40. how much would 49 kg cost?
Lerok [7]

Answer:

$186.2

Step-by-step explanation:

   38 kg costs $144.40

∴ 1 kg costs = \frac{144.40}{38}  = $3.8

   49 kg costs = 3.8  x  49

                        = $186.2

7 0
1 year ago
Read 2 more answers
What is 6n-2 when n=3
disa [49]

Answer:

16

Step-by-step explanation:

6n is 6 times 3 if n is 3. 6 times 3 is 18. Minus 2 is 16.

Hope this helps! If it does, please mark me brainliest. Thank you! ;)

4 0
2 years ago
PLEASE HELP IM SO STUCK
mihalych1998 [28]

Answer:

  Slope = 7/4

Step-by-step explanation:

You are given coordinate values and a formula that tells you what to do with them. All you need to do is put the values in the formula and do the arithmetic.

<h3>Points</h3>

You are given points (2, -3) and (6, 4). The slope formula refers to the two points as (x1, y1) and (x2, y2). It does not matter which is which.

If we use the points in the same order they are given, then we can see that ...

  • x1 = 2
  • y1 = -3
  • x2 = 6
  • y2 = 4

<h3>Formula</h3>

Using these values in the given formula, we find the slope to be ...

  m=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{4-(-3)}{6-2}=\dfrac{7}{4}

The slope of the line through the given points is 7/4.

4 0
1 year ago
An older person is 4 years older than 7 times the age of a younger person. The sum of their ages is 44. Find their ages
Fynjy0 [20]

Answer:

5 yr and 39 yr

Step-by-step explanation:

Let x = the age of the younger

then 7x + 4 = the age of the older

Now x + 7x + 4 = 44

8x + 4 = 44

8x = 40

x = 5

7x + 4 = 7(5) + 4 =  35 + 4 = 39

Check:  5 + 39 = 44

8 0
2 years ago
Solve 5,4 = n/-0.9
PtichkaEL [24]

Step-by-step explanation:

5.4×-0.9=n

n=-4.86

(-4/5)/(1/3)=x

X=-2 2/5

8 0
3 years ago
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