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Vedmedyk [2.9K]
2 years ago
10

A race car can travel 2 laps In 10 minutes How long will it take the race car to complete 100 laps at that rate ?

Mathematics
2 answers:
34kurt2 years ago
5 0

Answer:

500 minutes

Step-by-step explanation:

Ok, so the first thing we want to do is figure out how long it takes to complete one lap.

So if it takes 10 minutes to travel 2 laps lets find out how many minutes for one.

It would be 5 minutes for one lap, if you divide 10 by 2 because of the 2 laps.

Next, you just multiply the 5 minutes by 100 laps:

This gives you 500 minutes.

Hope this helps :)

lianna [129]2 years ago
3 0

Answer:

It would take 16.6 hours.

Step-by-step explanation:

10 mins. x 100 laps = 1,000 mins.

1,000 mins / 60 mins. = 16.6 hours.

I might be wrong on math, so correct me if I am.

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A company’s total cost from manufacturing and selling x units of their product is given by: y = 2x^2 – 600x + 49,000. How many u
AysviL [449]

Answer:

number of units for cost to be minimum=150

Step-by-step explanation:

y=2x^2-600 x+49000

dy/dx=4x-600

dy/dx=0 gives 4x-600=0

4x=600

x=150

d^2y/dx^2=4x

at x=150,d^2y/dx^2=4*150=600>0

so y is minimum at x=150

3 0
3 years ago
The sum of two numbers is 35.
LUCKY_DIMON [66]

Answer:

Larger number(x)=20

Step-by-step explanation:

They're saying that the larger number 3 times is EQUAL(the same) to 4 times the smaller number.

The smallest number=35-x.

The larger number= x.

3 times the larger number=3x

4 times the smaller number=4(35-x)

Now, input it into an equation and solve:

3x=4(35-x) Distribute by multiplying 4 with 35 and x.

3x+4x=140-4x+4x Get 140 by itself by adding 4x.

7x/7=140/7 Divide.

x=20

Since x= the larger number, x=20.

8 0
3 years ago
A person recently read that 84% of cat owners are women. How large a sample should the researcher take if she wishes to be 90% c
Lana71 [14]

Answer:

405

Step-by-step explanation:

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

n=\frac{(z_{\frac{\alpha }{2} })^{2} *p*q  }{E^2}

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of  (1 - confidence level)/2.  Use the calculator function of invNorm to find the z-score.  The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p.  For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

n =\frac{(1.645)^2*0.84*0.16}{(0.03)^2}\\n= 404.0997333

Round up to the next number, giving you 405.

6 0
3 years ago
Daniel works at a nearby electronics store. He makes a commission of 15% on everything she cells. If he sells a laptop for $293,
Bezzdna [24]

Hi there!

So here's the important information we know:

He makes 15% comission on everything he sells

He sells a laptop for $293


To find out how much money Daniel makes in comission for the laptop, you need to calculate 15% of $293, which is the same thing as multiplying 15% by $293 :

15% × 293 = $

0.15 × 293 = $

43,95 = $


So your answer is: If Daniel sells a laptop for $293, he makes a comission of $43,95.


There you go! I really hope this helped, if there's anything just let me know! :)

3 0
3 years ago
Read 2 more answers
What is the place value of 9 in 46.934?
Inga [223]
The 9 is in the Tenths place

5 0
3 years ago
Read 2 more answers
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