The divisibility rule
For example
The divisibility rule for three is adding the number together
1+8+6+4+2+6= 27
And 3 is divisible by 27
And for nine
It’s similar to three
Do you know own how to do multiplication
One little tool that you should always remember when you work
with percents is this:
The symbol ' % ' means ' /100 ' .
So ' 32% ' means ' 32/100 ' . There's your fraction.
If you want to simplify the fraction, divide the top and bottom numbers
by their greatest common factor. The greatest common factor of 32
and 100 is 8.
32/100 = 4/25 . There's your simplified fraction.
To find the decimal, you have two choices:
Choice #1:
A fraction always means division. Whenever you see a fraction,
it means "the top number divided by the bottom number".
Take one of the fractions ... 32/100 or 4/25 ... and do the division,
with your pencil or your calculator. The quotient will be the decimal.
Choice #2:
Another little tool that you should always remember
when you work with percents:
To change a decimal into a percent, move the
decimal point two places that way ==> . 0.25 = 25.%
To change a percent into a decimal, move the
decimal point two places this way <== . 32.% = 0.32
There's your decimal.
Answer:
Step-by-step explanation:
Given:
Required
Determine the probability that there are at least 5 members in a household
At least 5 means 5 to 8.
So, the probability is:
<em>The probability is 0.50</em>
Answer:
The height of the right circular cylinder is 4.55 inches ⇒ b
Step-by-step explanation:
The formula of the surface area of a right circular cylinder is
S.A = 2πrh + 2πr², where
∵ The surface area of a right circular cylinder is 300 square inches
∴ S.A = 300 in.²
∵ Its radius is 5 inches
∴ r = 5 in.
∵ π = 3.14
→ Substitute them in the rule above
∵ 300 = 2(3.14)(5)(h) + 2(3.14)(5)²
∴ 300 = 31.4h + 157
→ Subtract 157 from both sides
∵ 300 - 157 = 31.4h + 157 - 157
∴ 143 = 31.4h
→ Divide both sides by 31.4
∵ 4.554140127 = h
∴ 4.55 = h
∴ The height of the right circular cylinder is 4.55 inches