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NikAS [45]
3 years ago
11

Find the volume of a cone with a diameter of 7 inches and a height that is 4 times the radius. Use 3.14 for pi, and round your a

nswer to the nearest hundredth
Mathematics
2 answers:
Tatiana [17]3 years ago
7 0

Answer:

179.50 in^{3}

Step-by-step explanation:

The equation for volume of a cone is:

V=\pi *r^{2} *\frac{h}{3}

The radius is half of the diameter so r= 3.5 in

The height is 4 times the radius so h=14

V=3.14*3.5^{2} * \frac{14}{3}

V= 179.50 in^{3}

xenn [34]3 years ago
4 0

Answer: 180 inch

Step-by-step explanation:

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

\pi = 3.14\\diameter=7inch\\radius=\frac{d}{2}=\frac{7}{2}=3.5inch \\height = 4r=4(3.5)=14inch

V=\frac{1}{3} (3.14)(3.5)^2(14)\\V= 179.50\\V=180inch

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Bob wants to buy a TV that cost $500 plus 8% tax. He is getting a bonus of $45 and a birthday gift of $85 which he plans to use
Genrish500 [490]

Answer:

He needs to work for 40 whole hours

Step-by-step explanation:

In this question, we are tasked with calculating the amount a Tv will cost Bob in terms of the number of hours he needs to work.

Let’s look at the total cost he has to pay.

a. $500

b. 8% tax = 8/100 * 500 = $40

c. He is paying 2 bills of $35 each making a total of 2 * $35 = $70

The total amount he is to pay is thus; 500 + 40 + 70 = $610

Let’s look at his income ;

a. Bonus $45

b. Birthday gift $85

The total amount of money he has asides his salary to offset the bill is 45 + 85 = $130

The balance to pay from his salary would be $610 - $130 = $480

The number of hours he has to work since he earns $12 per hour would be 480/12 = 40 hours of work

5 0
3 years ago
Read 2 more answers
I need help I don’t know how to Solve for 50=6.2x
tensa zangetsu [6.8K]

divide 50 by 6.2, because 6.2 and x are entangled by multiplication. once you do that, you will have your answer. it should be 8.06

4 0
3 years ago
Read 2 more answers
Population Growth Using 20th-century U.S. census data,
asambeis [7]

The population of Ohio will be 10 million in the year 1970

The population growth of Ohio is represented by the function:

P(t)=\frac{12.79}{1+2.402e^{-}0.0309t}

P is the population in millions

t is the number of years since 1900

To find the year that the population of Ohio will be 10 million, substitute P = 10 into the function P(t) and solve for t

10=\frac{12.79}{1+2.402e^{-}0.0309t}\\\\10(1+2.402e^{-}0.0309t)=12.79\\\\1+2.402e^{-}0.0309t=\frac{12.79}{10} \\\\1+2.402e^{-}0.0309t=1.279\\\\2.402e^{-}0.0309t=1.279-1\\\\2.402e^{-}0.0309t = 0.279\\\\e^{-}0.0309t =\frac{0.279}{2.402} \\\\e^{-}0.0309t =0.116\\\\-0.0309t=ln0.116\\\\-0.0309t=-2.154\\\\t=\frac{-2.154}{-0.0309} \\\\t=69.7

t = 70 years (to the nearest whole number)

70 years after 1900 will be 1970

Therefore, the population of Ohio will be 10 million in the year 1970

Learn more here:  brainly.com/question/25504185

5 0
2 years ago
Help pleaseee. 20 points!
Alja [10]

Answer:

1. always true

2. always true

3. sometimes true

4. always true

5. never true

Step-by-step explanation:

6 0
3 years ago
Vanessa started with $800 in a bank account that does not earn interest. In the middle of every month, she withdraws 14 of the a
Nataliya [291]
An =800 *an-1 an a1=14
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3 years ago
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