AND CORRECT ANSWERS GRADED A+
One in every 9 people in a town vote for party A. All others vote for party B. How
many people vote for party B in a town of 810?
(8x810)/(9x1) --- 6480 % 9 = 720
If the tire of a car rotates at a constant speed of 552 times in one minute, how many
times will the tire rotate in half-an-hour?
16,560 (552 x 30 = 16,560)
A motorcycle cost $7,250. If it depreciates by 12% per year, how much will it be
worth after one year?
x^2 + 3 x - 10
(x - 2) (x + 5)
x^2 + 2 x - 24
(x - 4) (x + 6)
,x^2 - 9 x + 18
(x - 3) (x - 6)
2 x^2 - 5 x - 12
(x - 4) (2 x + 3)
18 x^3 - 57 x^2 - 85 x + 100
(x - 4) (3 x + 5) (6 x - 5)
To convert temperatures in degrees Celsius to Fahrenheit...
multiply by 1.8 (or 9/5) and add 32.
Salt helps to melt ice because it
lowers the temperature at which water freezes.
Integer
whole number (-3, 0, 3)
Prime Number
,Only can divide by itself and 1 (i.e. 2, 3, 5, 7..etc) (ONE IS NOT A PRIME
NUMBER) the smallest prime number is 2
Area of Circle
πr^2
Composite Number
A positive, whole number that can be divided evenly by numbers other than 1 or
itself. Composite numbers have more than 2 factors.
Trick to see if the number is divisible by 3
Add up the digits: if the sum is divisible by three, then the number is as well
Trick to see if the number is divisible by 4
Look at the last two digits. If the number formed by its last two digits is divisible
by 4, the original number is as well.
Trick to see if the number is divisible by 5
If the last digit is a five or a zero, then the number is divisible by 5.
, Trick to see if the number is divisible by 6
Check 3 and 2. If the number is divisible by both 3 and 2, it is divisible by 6 as
well.
Trick to see if the number is divisible by 7
To find out if a number is divisible by seven, take the last digit, double it, and
subtract it from the rest of the number. If you get an answer divisible by 7
(including zero), then the original number is divisible by seven. If you don't know
the new number's divisibility, you can apply the rule again.
Trick to see if the number is divisible by 8
Check the last three digits.if the last three digits of a number are divisible by 8,
then so is the whole number.
Trick to see if the number is divisible by 9
Add the digits. If that sum is divisible by nine, then the original number is as well.
(1/2) % (5/6) = ?
(1/2) x (6/5)
(1x6)/(5x2)
6/10