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LUCKY_DIMON [66]
3 years ago
15

The velocity of a car was 30m/s when the driver pushed the brake of the car and it stopped after 2 seconds. Assume that the acce

leration was constant during the braking time.find the acceleration and the distance cut during the braking
Mathematics
1 answer:
Murljashka [212]3 years ago
3 0

Answer:

the "acceleration" is -15m/s (it's negative because it is slowing down, not speeding up[it might just be a positive 15m/s if it is called deceleration and not acceleration])

Step-by-step explanation:

30m/s (starting speed)/2 (the number of seconds it took to stop from 30m/s

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How many gallons of a 80​% antifreeze solution must be mixed with 100 gallons of 20​% antifreeze to get a mixture that is 70​% a
Blababa [14]

To Find :

How many gallons of a 80​% antifreeze solution must be mixed with 100 gallons of 20​% antifreeze to get a mixture that is 70​% antifreeze.

Solution :

Let, x gallons of 80​% antifreeze solution is required :

So,

(x \times 80) + ( 100 \times 20 ) = (x + 100 )\times 70\\\\8x + 200 = 7( x + 100)\\\\x = 500

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6 0
2 years ago
Which is greater? 2.17 or 2.2
goldfiish [28.3K]

Answer:

2.2

Step-by-step explanation:

8 0
3 years ago
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Determine whether or not the two equations below have the same solution. In two or more complete sentences, explain your rationa
Dimas [21]
These equations do match up. All you have to do is find the solution to the first equation. After that, plug in that solution to the second equation. If it makes the equation true, then the equations match. 

Hope this helps!
5 0
3 years ago
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Which is equivalent to this expression?<br> 2/150 + 3/75
Lesechka [4]

Answer:

Step-by-step explanation:

\frac{2}{150}    First reduce this to lowest term

\frac{2}{150}=\frac{1}{75}\\\\\frac{2}{150}+\frac{3}{75}=\frac{1}{75}+\frac{3}{75}\\\\=\frac{1+3}{75}=\frac{4}{75}\\

7 0
3 years ago
Hello, and good morning ppl!!<br> what´s <img src="https://tex.z-dn.net/?f=%5Csqrt%7B70%2A%2070%7D" id="TexFormula1" title="\sqr
Tamiku [17]

your question :

\sqrt{70 \times 70}

here's the solution,

=》

\sqrt{10 \times 7 \times 10 \times 7}

=》

10 \times 7

=》

70

i hope it helped you..... good luch for your English exam.....

4 0
2 years ago
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