8 more than 3 times the number

What does h equal in the equation S=2πr2+2πrh?

Troyanec [42]

A

Step-by-step explanation:First, subtract

2

π

r

2

from each side of the equation to isolate the

h

term:

S

−

2

π

r

2

=

2

π

r

h

+

2

π

r

2

−

2

π

r

2

S

−

2

π

r

2

=

2

π

r

h

+

0

S

−

2

π

r

2

=

2

π

r

h

Now, divide each side of the equation by

2

π

r

to solve for

h

:

S

−

2

π

r

2

π

r

=

2

π

r

h

2

π

r

S

−

2

π

r

2

π

r

=

2

π

r

h

2

π

r

S

−

2

π

r

2

π

r

=

h

=

S

−

2

π

r

2

π

r

Or

h

=

S

2

π

r

−

2

π

r

2

π

r

h

=

S

2

π

r

−

2

π

r

2

π

r

h

=

S

2

π

r

−

r

2

r

h

=

S

2

π

r

−

r

4 0

3 years ago

When surveyed,the student who preferred science class to English class was 5:4 if 90 students were surveyed how many students ch

svp [43]

50. i’m sure you’re learning the proper mathematical way to do that, but my brain went ‘4+5 is 9. that’s 10 times less than 90’

7 0

3 years ago

Raul opened a savings account with $2900. Each week, d, Raul pays the dog sitter $20 from his savings account. Write a function,

OLga [1]

Answer:

f(d) = 2900 - 20d

Step-by-step explanation:

We start with 2,900 and each week 20 is deducted from the account.

f(d) = 2900 - 20d

6 0

3 years ago

5. A farmer puts apples into 36 crates. Each crate has 25 kilograms of apples in it. She sells 486,235 grams of apples. How many

Lynna [10]

There would be 413,765 kilograms after selling 486,235 grams of apples

How many grams make a kilogram?

In each kilograms, there are 1,000 grams, which means we need to first of all convert the total number of apples in kilograms to grams.

Each crate has 25 kilograms of apples in it

1 crate =25 kilograms

36 crates=36*25 kilograms

36 crates=900 kilograms

1 kilogram=1000 grams

900kilograms=1000*900

900 kilograms=900,000 grams

The number of grams left after having sold 486,235 grams of apples, in essence, the quantity of apples left thereafter is 900,000 grams minus the 486,235 grams of apples sold

apples left=900,000-486,235

apples left= 413,765 kilograms

Find out more about conversion of kilograms to grams on:brainly.com/question/9301317

#SPJ4

8 0

1 year ago

Derek had 104 more stamps than Ahmad. Derek then gave 1/9 of his stamps to

Flauer [41]

Answer:

117

Step-by-step explanation:

Let d represent the number of stamps Derek had at first. After he gave 1/9 of his stamps to Ahmad, Ahmad had (d -104) +(d/9). Derek had 4 times this number after giving away d/9 stamps:

(d -d/9) = 4((d -104) +d/9)

(8/9)d = 4d -416 +(4/9)d

416 = (32/9)d . . . . add 416 -8/9d

117 = d . . . . . . . . . . multiply by 9/32

Derek had 117 stamps at first.

_____

<em>Check</em>

1/9 of Derek's collection is 13 stamps. 104 less than Derek's collection is 13 stamps.

So, Ahmad started with 13 stamps and was given 13 stamps by Derek. Meanwhile, Derek started with 117 stamps and gave away 13, so ended with 104 stamps. That number (104) is 4 times Ahmad's new number (26), as it should be.

5 0

3 years ago