Math Knowledge Flashcards
If A = 6 and B = 5, what is the value of (A2- B2)2?
it is not times 2; the 2’s are an exponents
121
What are the factors of x2 + 4x + 3?
(x + 3)(x + 1)
The hypotenuse of a right triangle has a length of 14 units and a side that is 9 units long. Which equation can be used to find the length of the remaining side?
x2= 14^2 - 9^2
^2 means exponent. So it’s 14 to the power of 2
Simplify: 3/5x + x
8/5x
The product of 3! Is
6
The factors of 2x^2 + xy - 3y^2 are
(2x + 3y)(x - y)
What is the product of the reciprocals of 2/3, 1/8, and 5?
2-2/5
The reciprocal of 3-1/5 is
5/16
What is 8b - ab + 7a subtracted from 3a-9ab + b?
4a - 10ab + 9b
The coordinates of points A and B are (2, 4) and (-2, -4) respectively. What is the slope of the line that connects the two points?
2
Which of the following is NOT a prime number?
1
What is the area of a triangle with a base of 8 feet and a height of 4 feet?
16 square feet
If x + 3y = 7 and y = 2, then x equals
1
What is the value of 3x + 5y, when x = 12 and y = 4?
56
If 25 = 4x - 7, then x =
8
what is 12/50 in its simplest form?
6/25
16 = x/20, then x =
320
What is 5x times (3x^2 - 5)?
15x^3 - 25x
3(x + 6) = 39, then x=
7
If 2 = x - 3, then x equals
5
if 4x^2= 16, then x=?
32
What is the area of the rectangle?
15
Square root of 9
3
what is 3a^2 + a^2 added to a+6?
5a^2 + 6 + a
-25-8 =
potenially -25+8=
-33 or 17
if it does says -8 it’s -33 otherwise it’s 17
Simplify the ratio 12:18
2:3
What is the product of (a - 1) and (2a + 2)?
2(a^2 - 1)
If 4/3 x 3/4 = 5k, then k=
1/5
In the formula C=5/9(F - 32), if C= 35, then F =?
95
the reciprocal of 7 is
1/7
What is the area of a parallelogram if its length is x+4 and its height is x+3?
X^2+7x+12
using foil is how you get this answer
- Graphs of the following equations are straight lines EXCEPT
A 3x + 2y = 8
B y = x / 2 - 5
C x = 4y
D y = x ^ 2 + 3
y=X^2+3
x/4>12
x>48
