Simplify: a + 4b+9 + 6a + 2a

It is given that the area of a football field is 7.8 km². Its width is 3 200 m. Using the standard form, calculate the length, in m, of the football field.

A student estimated a mass to be 250g but upon carefully measuring it found the actual mass is 240g what is the percentage error

On a coordinated plane RS is translated 4 units up and 4 units to the right to create R'S'. Line r is drawn through R and R', and Line s is drawn through s and s'. which statement about lines r and s is true? a. lines r and s are parallel b.

Y=log x If y=10, then what is x? A. 10 B. 1 C. 100 D. 10^2

What is the thousandth place in this number 36,993

2 - 4x = 14 A) - 4 B) - 3 C) 0 D) 3

An anthropology graduate student measures the floor of a round hut and calculates that it has an area of 12.56 square meters. What is the floors diameter?

9 times the sum of a number is - 162 what is the number

A perfect square is the square of an integer. Of the integers from 2 through 99, how many have at least one perfect square factor > 1?

0.2 with an exponent of 4