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3 years ago

Alex and Jose are working on some math problems.

Mathematics

1 answer:

Volgvan3 years ago

4 0

Answer:

Alex is right so the problem is solved

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You are given the height and the circumference of the base of a cylinder. Describe how to find the surface area of the entire cy

Talja [164]

Hello from MrBillDoesMath!

Answer:

2 * (Pi r^2) + (Pi r^2)*h

where r = C/(2 Pi)

Discussion:

Total surface area of cylinder =

area of bottoms + surface area of cylinder =

2 * area of base + (area of base) * h

Generally, C = 2 Pi r, so r = C/(2 Pi) is known as we are given C. . Plugging this in the above equation gives

2 * (Pi r^2) + (Pi r^2)*h

Thank you,

MrB

6 0

4 years ago

If one-sixth of a number plus one-third returns two-thirds of that number What is the number

Solnce55 [7]

Answer:

$x= \frac{2}{3}$

Step-by-step explanation:

Let the number be x

Given

$\frac{1}{6}x + \frac{1}{3} = \frac{2}{3}x$

Required

Find x

$\frac{1}{6}x + \frac{1}{3} = \frac{2}{3}x$

Collect Like Terms

$\frac{1}{6}x - \frac{2}{3}x = - \frac{1}{3}$

Take LCM

$\frac{1 - 4}{6}x = \frac{-1}{3}$

$\frac{- 3}{6}x = \frac{-1}{3}$

Multiply both sides by 6

$6 * \frac{- 3}{6}x = \frac{-1}{3} * 6$

$-3x= -2$

Divide both sides by -3

$\frac{-3x}{-3}= \frac{-2}{-3}$

$x= \frac{2}{3}$

Hence, the number is $\frac{2}{3}$

7 0

4 years ago

What are the missing lengths ???

lesantik [10]

Answer:

1. c = 13

2. a = 20

Step-by-step explanation:

1. 12² + 5² = x²

144 + 25 = x

144 + 25 = 169

√169 = 13

2. 29² - 21² = x²

841 - 441 = x

841 - 441 = 400

√400 = 20

7 0

3 years ago

Please answer this for 15 points :) <333

lions [1.4K]

Answer:

Elena can run 3 miles per hour.

Step-by-step explanation:

Given that:

a circular running track = 1/5 mile

On this track, Elena runs completing each of the laps in 1/15 of an hour

We are to find Elena running speed.

It implies that the distance of Elena = $\dfrac{1}{5}$

Time to run each lap = $\dfrac{1}{15} \ of \ an \ hour$

Speed is the amount of distance covered in a specified period of time.

Recall that the formula for calculating speed is:

$Speed = \dfrac{distance}{time}$

$Speed = \dfrac{\dfrac{1}{5}}{\dfrac{1}{15}}$

$Speed ={\dfrac{1}{5}\times \dfrac{15}{1}$

Speed = 3miles / hour

As such, Elena can run 3 miles each hour.

3 0

3 years ago

I need help pretty pls

choli [55]

Answer: $8 and a ratio could be 12 for 8

Step-by-step explanation:

6 0

3 years ago