Simplify:
(-15x^4y^10z^12)^0
1
Express the following number in standard form:
5.6*10^7
56,000,000
Which of the following have correctly factored
18x-36y+24
A.
3(6x-12y+8)
B.
-2(-9x+18y-12)
C.
6(3x-6y-4)
A & B
2/5x=15
x=37 1/2
A number and its opposite are also known by these TWO other names.
Zero pairs or additive inverses
Simplify the following expression without negative exponents:
(15x^10y^4z^6)/(45x^2y^8z^6)
x^8/(3y^4)
Express the following in scientific notation:
0.0000985
9.85*10^-5
Evaluate the following when
x=2
((3x+1)/(4-x))/((x-1)/3+3/5)
3.75
"Eight subtracted from twice a number is 19 more than half of the number."
Find the number.
The number is 18.
TRUE or FALSE:
All fractions are integers.
FALSE - integers are whole numbers and their opposites.
Simplify
-3/4xy^2z^3*16x^3y^4z^5
-12x^4y^6z^8
Express the following in scientific notation:
375*10^-4
3.75*10^-2
Find the mistake in the following incorrect attempt to factor:
-3(4x-8y+6)=-12x-24y-18
It should be +24y or +8y
The length of a rectangle is three less than the width.
If the perimeter of the rectangle is 50 inches, find the length of the rectangle.
11 inches
The temperature outside was 58 degrees F and dropped to -7 degrees F overnight.
Find the change in temperature.
The change was -65 degrees F or a decrease of 65 degrees F.
Simplify the following expression in both exponential form & its equivalent numerical value (ex 2^2 = 4)
2^7*2/2^11
2^-3=1/8
In scientific notation, how many droplets were expelled when
(3*10)
people in the room sneezed at the same time and the number of droplets in each sneeze is
(4*10^4) ?
(1.2*10^6)
Simplify the following:
3/4(12x-16)-2(10-6x)
21x-32
Give the initial equation that represents the following scenario:
"the ages of three siblings are consecutive even integers such that three times the youngest decreased by the oldest is the same as 12 more than the middle sibling."
3x-(x+4)=(x+2)+12
Which of the numbers below are rational?
Simplify:
5abc*(-2a^2b)^2
20a^5b^3c
Manchester United is estimated to have
(7.5*10^6)
fans while Real Madrid has
(4.5*10^7)
fans.
Real Madrid has how many times the fan base of Man U?
6
Simplify the following:
9x+4-(3x+5)+4(3x-4)
18x-17
Mrs. DeSousa bought Valentine's Day presents for Zoe to bring to class.
She spent a total of $24.59, including a shipping fee of $4.75 and 16 sunglasses that each cost the same amount.
What equation would you use to find the cost of each pair of sunglasses, x, and how much was each pair?
4.75 + 16x=24.59
$1.24
If Mrs. Stevens paid with $40 on her order of four macaroni & cheese, five quesadillas and two chicken tenders, how much change did she get back?
$0.25