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3 years ago

A cylinder has a volume of 45 pi and radius of 3 what is the height? Plzz help it’s due tomorrow

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

4 0

Answer:

Height = 5

Step-by-step explanation:

$Solution,\\Volume(V)=45\pi \\Radius(r)=3\\Height(h)=?\\As,\\V=\pi r^{2} h\\45\pi =\pi (3)^{2} h\\\frac{45\pi }{9\pi } =h\\h=5$

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If something costs 14.50 and I give 15 pound how much do I get back

romanna [79]

Your change is 0.5 because 15 - 14.50 = 0.5

Hope this helps!! :))

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2 years ago

13. Marissa buys a prepaid cell phone card for $25. The charge for a phone call is $0.13 per minute, or part of a minute. Write

valentina_108 [34]

Answer:

The correct option is;

Marissa can talk for at most 192 minutes

Step-by-step explanation:

The amount for which Marissa buys the prepaid cell phone card = $25

The charge for a phone call using the recharge card = $0.13 per minute

The greatest number of minutes Marissa can call is given by the the following inequality;

t < $25/($0.13/minute)

$25/($0.13/minute) = (192 + 4/13) minutes

Therefore;

t < (192 + 4/13) minutes

The cost of 192 minutes = 192 minutes × $0.13 per minute = $24.96

The amount of credit left on the $25 recharge = $25 - $24.96 = $0.04

The minimum charge for calls = $0.13

The amount remaining after 192 minutes $0.04 is less than the amount to make a call $0.13

Therefore;

t ≤ 192 minutes

Therefore, Marissa can talk for at most 192 minutes.

5 0

3 years ago

Write the three forms of the line parallel to the line represented by the equation, 8x+3y=11 such that it passes through the poi

Misha Larkins [42]

Answer:

8x + 3y = 57
y = -8/3x + 19
y + 5 = -8/3(x - 9)

Step-by-step explanation:

Given function

8x+3y=11

Line parallel to the given has the same slope and passes through the point

(9, -5)

Determining the equation

8x + 3y = c
8*9 + 3*(-5) = c
c=72 - 15
c = 57

So the function is in standard form

8x + 3y = 57

Converting to slope-intercept form

y = mx + b
3y = -8x + 57
y = -8/3x + 573
y = -8/3x + 19

Point-slope form, using the given point

y - y1 = m(x - x1)
y - (-5) = -8/3(x - 9)
y + 5 = -8/3(x - 9)

6 0

3 years ago

Change 1.77 tones to kilograms

Anastasy [175]

Answer:

1.77 Tones = 1770 Kilograms

Step-by-step explanation:

Multiply the value of the tone by 1000 to get KG

1.77 x 1000 = 1770

6 0

2 years ago

Read 2 more answers

Having trouble with subtracting and regrouping mixed numbers. 5 1/8 -2 4/8.

Mkey [24]

You will need to convert them into improper fractions, subtract them, and convert them back to mixed numbers.
5 1/8 - 2 4/8
41/8 - 20/8
21/8
2 5/8
Your answer is 2 5/8.

5 0

3 years ago