scientific notation
Write 3,500,000 in scientific notation.
3.5 x 10^6
Simplify 2^3.
8
Simplify : 2x + 5y + 3x + 9y + 8
5x + 14y +8
100 Points: What type of number is -5?
Answer:Rational
100 Points: What is the value of x in the equation x/4 = 5?
Answer: 20
: What is the standard form of 4.2 x 10^-3?
: 0.0042
Simplify x^5 * x^2.
x^7
Solve for x: x + 5 = 12.
: x = 7
200 Points: What is the square root of 16?
4 and -4
500: Which number is irrational: √4, √5, 2.5, or 3?
Answer: √5
: Multiply (2 x 10^4) by (3 x 10^2). Express your answer in scientific notation.
6 x 10^6
: Simplify (y^4)^3.
Answer: y^12
: Solve for x: 3x - 2 = 10.
Answer: x = 4
300 Points: Is the number pi (π) rational or irrational?
Answer: Irrational
: (x/4) + 2 = 7
Answer: x = 20
Divide (8 x 10^7) by (2 x 10^3). Express your answer in scientific notation.
Answer: 4 x 10^4
Simplify 5^0.
1
400 Points: Simplify: 4(x + 2) - 3x.
Answer: x + 8
400 Points: Order the following numbers from least to greatest: -2, 0, 1/2, -1.5
Answer: -2, -1.5, 0, 1/2
Multiply (2 x 10^3) by (3 x 10^-1). Express your answer in scientific notation.
Answer: 6 x 10^2
The distance from the Earth to the Sun is approximately 1.5 x 10^8 kilometers. The speed of light is approximately 3 x 10^5 kilometers per second. How many seconds does it take for light from the sun to reach Earth?
Answer: 500 seconds
Simplify (3x^2y^3)^2.
Answer: 9x^4y^6
500 Points: The perimeter of a rectangle is 24 cm. The length is twice the width. What is the width?
Answer: 4 cm
500 Points: What is the decimal equivalent of 3/8?
Answer: 0.375
Simplify: x^5 / x^2
Answer: x^3