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nadya68 [22]
3 years ago
12

* E Which angle is an acute angle?

Mathematics
2 answers:
vodomira [7]3 years ago
8 0

Answer:

angle COD is right answer

Aleonysh [2.5K]3 years ago
5 0

Answer:

B. Angle COD

Step-by-step explanation:

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Order these numbers from least to greatest.<br> 79/20, 3.702, 3 10/11, 3.70
frutty [35]

Answer:

3.70 < 3.702 < 3 10/11 < 79/20

Step-by-step explanation:

3 0
3 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

d = 2r so

\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:

-3.8=\pi(2)(13)\frac{dD}{dt} and solving for the rate at which the diameter is changing:

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

\frac{dD}{dt}=-.459\frac{cm}{min} Obviously, the negative means that the diameter is decreasing.

7 0
3 years ago
Type the correct answer in the box. Round your answer to two decimal places.
svp [43]

Angle TRQ is 23 degrees and the length from S to R is 3.3 units.

I need help on this too

3 0
3 years ago
Read 2 more answers
I need to know how to do # 1 &amp; #2 &amp; #3
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3 years ago
Write an inequality (you must be older than 13 to play basketball league
marshall27 [118]
13+x=x because 13 plus x will be a good number so you can be able to join the basketball league
4 0
3 years ago
Read 2 more answers
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