Monifer used substitution to solve this system of equations. Which equation could be the result of her first step? 3a + b=225 b=a-15

Rate of change for (1,3), (7,5)

If a truck travels 379 miles in 16 gallons of gas, how many miles per gallon does it average (to the nearest tenth)

Suppose you have 35 books (15 novels, 10 math books, and 10 computer science books). assume that all 35 books are different. in how many ways can you: • put the 35 books in a row on a shelf?

Two supplementary angles are in the ratio of 1 to 3. The measure of the larger angle is 60 67.5 120 135

The city plans a roadway to have trees every 1/6 mile. If the path is 5 1/2 miles long, how many trees will the city need?

Find the square root of 3364 by prime factorization method

Which best describes independent events? The results of all events have different individual probabilities. The results of any previous events affects the probability of future events. The results of all events have the same individual probability.

1) Simplify 9 - {x - (7 + x) } 2) Simplify (-5) + (-4) + (7). 3) Evaluate A^2 for A = - 3. 4) Simplify and determine the coefficient of (-1/3x) (3y) (-2x). 5) Evaluate 5x3 + 2 for x = - 1.

Identify the coefficient of 2xy A. X B. 3 C. 2 D. 1

Is 0.5 degress celsius below freezing