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NISA [10]
3 years ago
9

Please help quickly!

Mathematics
1 answer:
Jet001 [13]3 years ago
7 0
Find the volume

volume=hpir^2
d/2=r=16/2=8


1.
hmm, ok, after 1/2 hour or 30 mins
30/5=6
6*1=6, 6 cubic meters
volume=6, solve for height
v=hpir^2
but r=8 all the time, solve for h
6=hpi8^2
6=hpi64
6/(64pi)=h
the depth is \frac{3}{32 \pi} meters or about 0.02984155182973037545666570563235 meters
the depth is about 0.03 meters



2. the full volume is
v=6pi8^2=6pi64=384pi
1 cubic meter every 5 mins so
384pi/1 is how many 5 mininute intervals
so 384pi times 5=total minutes=1920pi minutes or about 6031.8578948924030178482752958966minutes
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Can someone pls help me I'm stuck o these two questions
jeka57 [31]

Problem 1

<h3>Answers:</h3><h3>arc AB = 122 degrees</h3><h3>angle ADB = 61 degrees</h3>

--------------------

Explanation:

Arc BC is 58 degrees. The arc AB combines with it to form semicircle ABC, which is basically arc ABC with measure 180

This must mean arc AB is 180-58 = 122 degrees

When in doubt, chances are the number 180 might be involved (in some way) when it comes to geometry problems. Of course, this isn't always a guarantee. The number does show up a lot though.

Once we determine what arc AB is equal to, we cut it in half to get the inscribed angle ADB. Refer to the inscribed angle theorem. Notice how angle ADB subtends the arc AB.

==========================================================

Problem 2

<h3>Answer:  9</h3>

--------------------

Explanation:

x = length of AE

Since AC = 13, this makes EC = 13-x

We'll use the intersecting chords theorem to find x.

(AE)*(EC) = (BE)*(DE)

x*(13-x) = 6*6

13x-x^2 = 36

-x^2 + 13x - 36 = 0

x^2 - 13x + 36 = 0

(x-9)(x-4) = 0

x-9 = 0 or x-4 = 0

x = 9 or x = 4

This means AE could be 9 units long or 4 units long.

Usually the diagram isn't drawn to scale so we don't really use it all too much (other than initial set up). However, if the diagram was drawn to scale, then notice that AE is over the halfway point of AC. This means we would be able to rule out x = 4 since 4 is not over the halfway point of 13. I have a feeling this is what your teacher might be going for.

In short, only AE = 9 is possible.

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Which postulate or theorem proves that these two triangles are congruent?
denis-greek [22]
AAS they have a congruent side marked, the vertical angle and the marked congruent angle
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4 years ago
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3 years ago
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I ONLY HAVE 5 MIN TO TURN THIS IN PLS HELP!!!!!!!!!!!!!!!!!!!!!!
Viktor [21]
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A train traveled 150 miles in 1 1/4 hours. At this rate, how far will the train travel after 5 hours? Pls help :)
Volgvan

Answer:

600 Miles

Step-by-step explanation:

150/1.25=x/5

Cross multiply:

1.25x=750

x=600 miles

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3 years ago
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