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galben [10]
3 years ago
9

Find the surface area of the cone, use 3.14 for pi

Mathematics
2 answers:
seraphim [82]3 years ago
6 0
To find the area of a cone you do A=πr(r+\sqrt{h^2 + r^2}
Which give you the answer of 151.58
DIA [1.3K]3 years ago
3 0
Hey,
The answer is 138 inches².

Cheers,
Izzy
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A train traveled 325 miles in 5 hours. What was the train's average rate of speed in miles per hour?
Nostrana [21]

65 miles per hour

325/5= 65

7 0
3 years ago
Read 2 more answers
Please respond to the question below in your own words with proper explanations
ycow [4]

Answer:

t(400)=673.

It means that 673 of 9 inch tiles are required to cover an area of 400 square feet, when spacing the tiles a quarter inch apart.

Step-by-step explanation:

Given:

The function relating number of 9 inch tiles required and area to cover is:

t(A)=\frac{144}{9.25^2}A

Now, plug in 400 for A to evaluate t(400).

t(400)=\frac{144}{9.25^2}\times 400=\frac{144\times 400}{85.5625}=\frac{57600}{85.5625}=673.19\approx6225

Therefore, Don required  673 of 9 inch tiles to cover an area of 400 square feet, when spacing the tiles a quarter inch apart.

4 0
3 years ago
Can you answer this for me thank you
S_A_V [24]
Make it into a simultaneous equation:

5p + 4e = 7.65
4p + 5e = 7.20

Use adding/subtracting formula

The cost of an eraser is $1.44
3 0
3 years ago
Any one can help me with problem 4?
Travka [436]
One is 55%

Two is 190%

Three is 57
3 0
3 years ago
A full grain silo
Kazeer [188]

Answer:

m is the slope.

b is the y-intercept.

the slope is the same as he constant rate.

let y = the number of feet of grain left in the silo.

let x = the number of seconds.

you get y = -3.5 * x + b.

when x = s seconds, the equation becomes y = -3.5 * s + b.

b is the y-intercept which is the value of y when x = 0.

when x = 0, no seconds have elapsed and the silo is therefore at whatever height it was before you started to empty it.

that would be the value of b.

if we assume that the height of the grain in the silo was 150 feet, then the formula would become

Step-by-step explanation:

y = -3.5 * x + 150

after s seconds, the formula would become y = -3.5 * s + 150.

if s was equal to 20, then the formula would become y = -3.5 * 20 + 150 which would then become y = -70 + 150 which would then become y = 80.

after 20 seconds, there would be 80 feet of grain left in the silo.

the graph of the equation would look like this.

from the graph, you can see that the height of the grain in the silo is 150 feet when you start and gets down to 80 feet after 20 seconds and that the silo will be empty somewhere between 42 and 43 seconds.

7 0
3 years ago
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