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Zielflug [23.3K]
3 years ago
13

Write and solve a proportion to answer the question.

Mathematics
1 answer:
svet-max [94.6K]3 years ago
6 0
A/78 = 25/100 . . . . the equation
a = 78*25/100 = 19.5

19.5 is 25% of 78
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A cone with radius 5 units is shown below. Its volume is 105 cubic units. Find the height of the cone.
Ainat [17]

Answer:

height of the cone  = 4.01273885 units

Step-by-step explanation:

Volume of a cone(V) is given by:

V = \frac{1}{3} \pi r^2h             ....[1]

where,

r is the radius and h is the height of the cone.

As per the statement:

A cone with radius 5 units and ts volume is 105 cubic units

⇒r = 5 units and V = 105 cubic units

Substitute these given values and use \pi = 3.14 in [1] we have;

105 = \frac{1}{3} \cdot 3.14 \cdot 5^2 \cdot h

Multiply both sides by 3 we have;

⇒315 = 78.5 \cdot h

Divide both sides by 78.5 we have;

4.01273885 = h

or

h = 4.01273885 units

Therefore, the height of the cone is, 4.01273885 units

6 0
3 years ago
Read 2 more answers
These are two similar triangles.<br> What does x equal?
tangare [24]

Answer:

112

Step-by-step explanation:

So, we know that a triangle's sides must add up to have a sum of 180. If you add up your given lengths and you should get 47, not including x. Then if you look at the left side/the one without a given length and it should be identical to the 21, so you know that side is 21. So now add 21 to 47, you should get 68. Finally, you subtract 68 from 180 like this: 180-68, and it should equal 112. So you're answer is 112.

3 0
2 years ago
Suppose that to make the golf team you need to score no more than 74 on average over 5 games. If you scored 77, 71, 77, and 67 i
vivado [14]
No more than 74 on average of 5 games means no more than 370 shots on total. If you add all of the numbers up you will get 292, so he can still shoot 370-292=78 in the last round, which is answer choice B.
5 0
3 years ago
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What is the difference between centroid orthocentre and circumcentre​
Sergeu [11.5K]

Answer:

centroid- the point of concurrency of the <em>medians.</em>

<em />

orthocenter- the point of concurrency of the <em>altitudes.</em>

<em />

circumcenter- the point of concurrency of the <em>perpendicular bisectors.</em>

<em />

hope this helps :)

3 0
3 years ago
What probability should be assigned to the outcome of heads when a biased coin is tossed, if heads is three times as likely to c
astraxan [27]

Answer:

propability is the low of chance

5 0
3 years ago
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