y + 2 = 7
y + 2 = 7
y = 7 - 2
y = 5
4x + 5 = 13
4x + 5 = 13
4x = 13 - 5
4x = 8
x = 8/4
x = 2
3g + 2g + 1 = 21
3g + 2g + 1 = 21
5g + 1 = 21
5g = 21 - 1
5g = 20
g = 20/5
g = 4
2(3x - 4) + 5 = 4x + 9
6x - 8 + 5 = 4x + 9
6x - 3 = 4x + 9
2x = 12
x = 6
Which of the following is an example of an irrational number between 6 and 7?
a. 2 π
b. 6.875
c. √32
A
m - 6 = 10
m - 6 = 10
m = 10 + 6
m = 16
2x + 3 = 15
2x + 3 = 15
2x = 15 - 3
2x = 12
x = 6
4a + 2a + 3 = 15
4a + 2a + 3 = 15
6a + 3 = 15
6a = 15 - 3
6a = 12
a = 12/6
a = 2
−5(4x − 2) = −2(3 + 6x)
-20x + 10 = -6 - 12x
-8x + 10 = -6
-8x = -16
x = 2
Which one of these is NOT an integer?
A. 42
B. -15/3
C. -6.8
C
9 + n = 13
9 + n = 13
n = 13 - 9
n = 4
6x + 3 = 33
6x + 3 = 33
6x = 33 -3
x = 30/6
x = 5
x/2 - 4 = 6
x/2 - 4 = 6
x/2 = 6 + 4
x/2 = 10
x = 10 (2)
x = 20
5(2x + 6) = −4(−5 − 2x) + 3x
10x + 30 = 20 + 8x + 3x
10x + 30 = 20 + 11x
-x + 30 = 20
-x = -10
x = 10
3.5% is greater than or less than 0.04
less than
4x = 20
4x = 20
x = 20/4
x = 5
x/4 - 2 = 3
x/4 - 2 = 3
x/4 = 3 + 2
x/4 = 5
x = 5 (4)
x = 20
10 ( 2 + 3z) = 110
z = 3
2(x + 7) – 34 = -7x + 4(x – 1)
2x +14 -34 = -7x + 4x - 4
2x - 20 = -3x - 4
5x = 16
x = 3.2
What is the volume of a cylinder with a diameter of 8cm and a height of 10cm?
Volume of cylinder formula: V=πr2h
502.65 cm2
v/5 = 3
v/5 = 3
v = 3 (5)
v = 15
x/2 - 1 = 6
x/2 - 1 = 6
x/2 = 6 + 1
x/2 = 7
x = 7 (2)
x = 14
6x - 2(x - 5) = 46
6x -2x +10 = 46
4x +10 = 46
4x = 36
x = 9
-9.5(2x - 10) = 3.8(-5x + 25)
All Real Numbers
What is 3x5 / 3x2?
3x3