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miv72 [106K]
3 years ago
5

In our new car, we were able to drive 30 miles in a half an hour. From this information, we can determine the car's

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
6 0

Answer:

Speed = 26.8 m/s

Step-by-step explanation:

It is given that, in our new car, we were able to drive 30 miles in a half an hour. Here, 30 miles is distance covered by the car and half an hour is the time taken by the car to cover that distance.

We know that distance covered by an object divided by the time taken to cover that distance is called the speed of the car. Mathematically, it can be written as :

s=\dfrac{d}{t}

d = 30 miles = 48280.3 m

t = 1/2 hour = 1800 s

So, s=\dfrac{48280.3\ m}{1800\ s}

s = 26.8 m/s

Hence, we can determine the car's speed and it is equal to 26.8 m/s

mr_godi [17]3 years ago
5 0
You can determine the speed of the car since you have the distance in half an hour. You have distance and time, so you can find speed.

Hope this helped!

Good Luck!
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3 years ago
I built a storage shed in the shape of a rectangular box on a square base. The material that I used for the base cost $4 per squ
Jobisdone [24]

Answer:

\frac{a(450-8a^2)}{4}

is the volume in terms of side a

Step-by-step explanation:

Given that you I built a storage shed in the shape of a rectangular box on a square base. The material that I used for the base cost $4 per square foot, the material for the roof cost $2 per square foot, and the material for the sides cost $2.50 per square foot; and I spent $450 altogether on material for the shed.

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7 0
3 years ago
Please I need this quick!!! 15 points
professor190 [17]
Let the number be n.

Then:

n^2 + (1/n)^2 = 82/9; find n.  Find the LCD; it is 9n^2.

Mult all 3 terms by 9n^2:
                                                                  82*9n^2
9n^4 + 9 = (82/9)(9n^2)  =>    9n^4 + 9 = ------------  
                                                                        9
Then 9n^4 - 82n^2 + 9 = 0

I used my graphing calculator to find that n = 3.  

Let's check:     is 3^2 + (1/3)^2 = 82/9?
                        Is   9   + 1/9 = 82/9?
                        Is  81 + 1 = 82?   YES.  So, n=3 is a solution.

7 0
3 years ago
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