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Lady bird [3.3K]
3 years ago
9

manny is on a bus that is traveling at a constant speed of 60 miles per hour. how far will he travel in 3 1/2 hours

Mathematics
1 answer:
dezoksy [38]3 years ago
4 0

he would have traveled 210 miles because in half an hour he would have traveled 30 miles and in 3 hours he would have traveled 180 miles. so we have to add those up and we get our answer: 210 miles


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Giving brainliest + 20 points!
TEA [102]

Answer:

when the NUMERATOR of a fraction is equal to 0

Step-by-step explanation:

If the fraction is 0/x, the answer will always be 0 (where x is any number except 0, otherwise the answer is not defined).

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2 years ago
The surface area of a melting snowball decreases at a rate of3.8cm2/min. Find the rate at which its diameter decreases when the
Scorpion4ik [409]

Answer:

Step-by-step explanation:

This is a pretty basic related rates problem. I'm going to go through this just like I do in class when I'm teaching it to my students.

We see we have a snowball, which is a sphere. We are talking about the surface area of this sphere which has a formula of

S=4\pi r^2

In the problem we are given diameter, not radius. What we know about the relationship between a radius and a diameter is that

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\frac{d}{2}=r Now we can have the equation in terms of diameter instead of radius. Rewriting:

S=4\pi(\frac{d}{2})^2 which simplifies to

S=4\pi(\frac{d^2}{4}) and a bit more to

S=\pi d^2 (the 4's cancel out by division). Now that is a simple equation for which we have to find the derivative with respect to time.

\frac{dS}{dt}=\pi*2d\frac{dD}{dt} Now let's look at the problem and see what we are given as far as information.

The rate at which the surface area changes is -3.8, and we are looking for \frac{dD}{dt}, the rate at which the diameter is changing, when the diameter is 13. Filling in:

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-\frac{3.8}{26\pi}=\frac{dD}{dt} and divide to get

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Anestetic [448]

Answer:

look up the paper because i had that same paper

Step-by-step explanation:

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2 years ago
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Vinil7 [7]

Answer:

1/3

Step-by-step explanation:

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2 years ago
Ayuda porfavor urgenteee<br> 15 puntos!!!
VMariaS [17]

Answer:

x=11

z=16

Step-by-step explanation:

5x+3z=70

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2x-z=6

z=2x-6

5x+3(2x-6)=70

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x=11

z=2(11)-6

  =16

4 0
3 years ago
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