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3 years ago

What is the simple ratio of 1 ½km to 900m

Mathematics

1 answer:

LekaFEV [45]3 years ago

7 0

I think it would be 1:600

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Help me with this!!!

IrinaK [193]

300. Because the distance is still 100 in between.

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3 years ago

Hi I will give the brainliest to whoever answers my question what is the range(spread) in the student enrollment

Kipish [7]

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Step-by-step explanation:

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3 years ago

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cylinder shaped can needs to be constructed to hold 200 cubic centimeters of soup. The material for the sides of the can costs 0

Dafna11 [192]

Answer:

Radius=2.09 cm

Height,h=14.57 cm

Step-by-step explanation:

We are given that

Volume of cylinderical shaped can=200 cubic cm.

Cost of sides of can=0.02 cents per square cm

Cost of top and bottom of the can =0.07 cents per square cm

Curved surface area of cylinder= $2\pi rh$

Area of circular base=Area of circular top= $\pi r^2$

Total cost,C(r)= $0.02\times 2\pi rh+2\pi r^2\times 0.07$

Volume of cylinder, $V=\pi r^2 h$

$200=\pi r^2 h$

$h=\frac{200}{\pi r^2}$

Substitute the value of h

$C(r)=0.02\times 2\pi r\times \frac{200}{\pi r^2}+2\pi r^2\times 0.07$

$C(r)=\frac{8}{r}+0.14\pi r^2$

Differentiate w.r.t r

$C'(r)=-\frac{8}{r^2}+0.28\pi r$

$C'(r)=0$

$-\frac{8}{r^2}+0.28\pi r=0$

$0.28\pi r=\frac{8}{r^2}$

$r^3=\frac{8}{0.28\pi}=9.095$

$r=(9.095)^{\frac{1}{3}}=2.09$

Again, differentiate w.r.t r

$C''(r)=\frac{16}{r^3}+0.28\pi$

Substitute the value of r

$C''(2.09)=\frac{16}{(2.09)^3}+0.28\pi=2.63>0$

Therefore,the product cost is minimum at r=2.09

h= $\frac{200}{\pi (2.09)^2}=14.57$

Radius of can,r=2.09 cm

Height of cone,h=14.57 cm

4 0

3 years ago

What is the greatest common factor for 12 and 18 and 26

serious [3.7K]

Well what you would have to do is find out what numbers can go into all of them.
the numbers are..
1 and 2 and the greatest one is 2 thats your answer
Hope this helps

6 0

4 years ago

Corey earned

wlad13 [49]

Answer:

He would need to work 8 weeks for 2300, 16 for 6400, and 22 for 8800

Step-by-step explanation:

You have to divide 3,200 by 400 since thats how much he makes in a week

that gives you 8

and you do the same for the rest

equation:

money wanted/400=weeks

3 0

3 years ago

Read 2 more answers

What is the simple ratio of 1 ½km to 900m​

What is the simple ratio of 1 ½km to 900m