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Anna35 [415]
3 years ago
9

A car is traveling at a speed of 108 km per hour what is the car speed in meters per second how many meters with the car travel

in 10 seconds. do not round your answer
Mathematics
1 answer:
o-na [289]3 years ago
7 0

There is a method of doing this called unit analysis. It automatically sets up the question in such away that you multiply all the numerators together and divide by all the denominators multiplied together. It is very handy to know.

Notice how the cancellation takes place as you progress from left to right. You are given seconds to start with and that cancels at the end, so that you are only left with meters.

\dfrac{10 s}{1} * \dfrac{108 km}{1 hour} * \dfrac{1000 m }{1 km}*\dfrac{1 hour}{3600 s}

\text{numerator = 10 * 108 * 1000 = 1080000}\\ \\ \text{denominator = 1 * 1 * 1 *3600}

The distance traveled in 10 seconds = 1080000 / 3600 = 300 meters.

Answer: 300 meters

You could also do this question by proportions, which you will no doubt get as your second answer.


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step 1.

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3 0
3 years ago
mary had 3/4 of a container of orange juice left in the refrigerator.her brother came and drink 4/5 of it. how much orange juice
enyata [817]

Answer:

12/25 of the entire container.

Step-by-step explanation:

To solve this, multiply 3/4 by 4/5. 3/4 * 4/5 = 12/25. Therefore, her brother drank 12/25 of the whole container.

7 0
3 years ago
A cone has the diameter of 15 inches and is 27 inches tall what is the volume for the cone?
suter [353]

Answer:

the volume of a cone = 1589.625feet³

Step-by-step explanation:

given that the diameter of the cone = 15inches

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volume of the cone = ?

recall that

the  formulae for finding the volume of a cone is given to be

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6 0
3 years ago
What are the solutions to the equation x2 +3x-4=0
Serhud [2]
x^{2} +3x-4=0

You wan't to get it into a format of (x+a)(x+b)=0
where a+b = 3 (the one from the 3x)
and where a*b= -4 (from the last -4)

(x+4)(x-1)=0
See how 4+(-1) = 3 and (4)(-1) = -4

now find what values of x would make the equation equal 0
x=-4
(-4+4)(-4-1) = (0)(-5) = 0

x=1
(1+4)(1-1) = (5)(0) = 0
4 0
3 years ago
Read 2 more answers
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