Not a math question but they dont have a PE subject (math nerd who dont know sports needs help)

Mathematics

1 answer:

eduard2 years ago

6 0

Answer:

i think its cancellation the others don't make sense.

Step-by-step explanation:

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Calculate the volume of water in the cup when it is full

maxonik [38]

To find:

The volume of the water in the cup when it is full.

Solution:

The volume of the water is equal to the difference of the volume of the small cone and the larger cone.

Here, the ratio of the radius of both cones is equal to the ratio of their heights. SO,

$\begin{gathered} \frac{r}{2.7}=\frac{20}{20-8} \\ \frac{r}{2.7}=\frac{20}{12} \\ \frac{r}{2.7}=\frac{5}{3} \\ r=4.5 \end{gathered}$

The radius of the larger cone is 4.5 cm.

So, the volume of the water is:

$\begin{gathered} V=\frac{1}{3}\pi R^2H-\frac{1}{3}\pi r^2h \\ =\frac{1}{3}\pi(R^2H-r^2h) \\ =\frac{1}{3}\pi((4.5)^2(20)-(2.7)^2(12)) \\ =\frac{1}{3}\cdot\frac{22}{7}(405-87.48) \\ =\frac{22}{21}(317.52) \\ =332.64cm^2 \end{gathered}$

The volume of water when the cup is full is 332.64 cm^2.

7 0

1 year ago

X³+y³+z³=k <br> If u get a right answer its going to be marked brainliest

scoray [572]

Answer:

x3+y3+z3

Step-by-step explanation:

hope it helps

5 0

3 years ago

Please help! i posted picture of question

n200080 [17]

I would go with option C. x, in the first equation.

The X term has a coefficient of 3, the lowest common factor amongst the 3 terms making for easy isolation of the variable.

5 0

3 years ago

Read 2 more answers

5. A stove has a list price of $1,400. If the chain discount is 13/10/4, what's the net price? Also, what's

Arada [10]

Answer:

I think this is the answer. I tried.

Step-by-step explanation:

13/10/4 = .325

A. 1,400 x .325=455

Net Price=1,400-455 = 945

B. Trade Discount = 32.5%