Exponents & Sq. Roots
100
1
7a - 4a + 2b + 3b
3a + 5b
Write each number in standard notation.
5.0 x 103
5000
Tell what each ratio is multiplied by to produce the equivalent ratio.
6/12 = 18/36
3
What is 0.6 written as a fraction?
3/5
(-2)-3
-1/8
2x - 8 + 3x = 7
x = 3
Write each number in scientific notation.
9,580,000
9.58 x 106
Two cubic meters of olive oil have a mass of 1830 kilograms. What is the density of olive oil?
915 kg
Multiply
-1/4(-5/8)
5/32
(-4)4 • (-4)6 / (-4)2
(-4)8
7x - 11 = -19 + 36
x = -2
Write each number in scientific notation.
0.0002008
2.008 x 10-4
Tell which is the better buy.
8.2 oz of toothpaste for $2.99 or 6.4 oz of toothpaste for $2.49
8.2 oz for $2.99
y + 17.3 =-65
y = -82.3
Solve for the unknown side in each right triangle to the nearest tenth.
a = 8, b = 15, c = ?
17
3(6x - 7) - 15x = 3
x = 8
Simplify. Write your answers in scientific notation.(3.25 x 109)+ (4.7 x 109)?
7.95 x 109
Greg bought 6 post cards for $3.00. At this rate, how much would 10 post cards cost?
$5.00
-h/7.8 = 2
h = -15.6
Cities A, B, and C form a right triangle. City A is 13 miles from City B. City B is 19 miles from City C. The distance between City A and City C is represented by the hypotenuse. What is the distance between City A and City C? Round your answer to the nearest tenth.
23.0 miles
1/2(6x - 4) = 4x -9
x = 7
The mass of earth is 5.98 x 1024 kg. The mass of the moon is 7.35 x 1022 kg. How many more kilograms make up the earth than the moon? Round your answer to the nearest hundredth
5.91 x 1024
A painter uses 2 gallons of paint for every 450 square feet of wall space. If the painter needs to cover 1687.5 square feet, how much paint will he need?
7.5 gallons
m + 6/-3 = 4
m = -15