a sphere with a radius of 15cm has the same volume as a cylinder with a radius of 5 cm.what is the height od the cylinder

Mathematics

2 answers:

maks197457 [2]3 years ago

7 0

Step-by-step explanation:

according to the question,

vol.of sphere = vol of cylinder

4/3πR³=πr²h

refer to the attached file.

thanks for the question!!

damaskus [11]3 years ago

6 0

Answer:

180cm

Step-by-step explanation:

Vol of sphere = (4/3) pi r^3 and vol of cylinder = pi r^2 h

(4/3) pi 15^3 = pi (5)^2 h

(4/3) * 15^3 = 25h

h = [(4/3) * 15^3 ] / 25 = 180 cm

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Solve: negative 1/2 x + 1 = –x + 8 7 1/2 14 18

Marina86 [1]

The answer is x=14/3

so basically C., hope this helps

3 0

3 years ago

Can someone help me please im very confused and please use step by step please -2/3x+1<7

Brut [27]

Answer:

x>-9

Step-by-step explanation:p

1.) Subtract 1 from both sides

-2/3x+1<7

-1<-1

= -2/3x < 6

2.) Multiple the 3 (denominator) in order to get rid of the fraction

3(-2/3x) < (6)3

= -6/3x < 18 (simplify the 6/3 into 2)

= -2x < 18

3.) Divide by -2 (when you divide with a negative number, your sin is going to switch, meaning it will turn into a '>' sign)

-2x / -2 < 18/-2

= x > -9

*ALSO*

If you want to graph it on a number line, it would look something like the picture above. (the circle is open because it doesn't have the line underneath. You're symbol also indicates which way you shade!! < = left .....> = right.....think of them like arrows :) )