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babunello [35]
3 years ago
5

Michelle is three times as old as Fiona. Fiona is twice as old as Madeline. Madeline is seven years old. How old is Michelle?

Mathematics
1 answer:
Leto [7]3 years ago
6 0
7*2=14
14*3=42

Michelle is 42 years of age...
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A cylinder and cone have the same height and radius. The height of each is 5 cm, and the radius is 2 cm. Calculate the volume of
never [62]

Answer:

The volume of a cylinder is 62.8 cm and the volume of a cone is 20.9 cm³ .

Step-by-step explanation:

Formula

Volume\ of\ a\ cylinder = \pi r^{2} h

Volume\ of\ a\ cone = \pi r^{2} \frac{h}{3}

Where r is the radius and h is the height .

As given

A cylinder and cone have the same height and radius. The height of each is 5 cm, and the radius is 2 cm.

\pi = 3.14

Thus

Volume\ of\ a\ cylinder =3.14\times 5\times 2\times 2

                                             = 62.8 cm³

Thus the volume of a cylinder is 62.8 cm³ .

Volume\ of\ a\ cone = 3.14\times 2\times 2\times frac{5}{3}

Volume\ of\ a\ cone =\frac{5\times 3.14\times 2\times 2}{3}

Volume\ of\ a\ cone =\frac{62.8}{3}

                                        = 20.9 (Approx) cm³

Thus the volume of a cone is 20.9 cm³ .

Therefore the volume of a cylinder is 62.8 cm and the volume of a cone is 20.9 cm³ .

8 0
3 years ago
Luke earned a grade of 88% on his multiple choice history final that had a total of
weqwewe [10]

Answer:

176

Step-by-step explanation:

88% = 88/100

88 × 2 = 176

176/200

4 0
2 years ago
Read 2 more answers
Freida drove 50 miles in 15 minutes. At this rate, how many miles did she drive in 9
siniylev [52]

Answer:

30 miles

Step-by-step explanation:

The rate is distance /time

50 /15 =10/3 miles per hour

To find the distance traveled in 9 minutes, multiply the rate by the time

distance = 10/3 *9 = 30

30 miles

4 0
3 years ago
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In the picture below, what is the angle relationship of <5 and <3 ?
lidiya [134]

Answer:

4 and 3

Step-by-step explanation:

8 0
3 years ago
Logarithms are studied for which of the following​ reasons? A. To help in solving exponential equations when relating the bases
skad [1K]

Answer:

To help in solving exponential equations when relating the bases cannot be used

Step-by-step explanation:

Recall an equation of the form

a^{x}=b\\ from the expression a^{x}\\, a\\ is the base and the power is {x}\\.

a\neq b\\ it is impossible to carryout the operation since the bases are not equal.

This is where we implore the help of logarithm which help us to bring the base to a come base i.e using the property below

loga^{x}=logb\\x=\frac{logb}{loga} \\.

Hence we can conclude that logarithm helps in solving equations when bases cannot easily be related.

7 0
3 years ago
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