The altitude a (in feet) of a plane t minutes after liftoff is given by a=3,400t + 600. How many minutes after liftoff is the plane at an altitude of 21,000 feet?

Sheila either walks to school or cycles, the probability that she walks it 0.65. If she walks, the probability that shell be iate is 0.4 If she cycles the probability that shell be late is 0.

The sum of two consecutive odd integers is at least 76 find the least possible pair of integers

4 times 2 to the power of - 4 + 5 What is the answer? 4⋅2-4+5

Jane counted a total of 40 white cars and yellow cars. There are 9 times as many white cars as yellow cars. How many white cars did Jane count?

A bag contains 7 red marbles, 6 blue marbles and 3 green marbles. If three marbles are drawn out of the bag, what is the probability, to the nearest 10th of a percent, that all three marbles drawn will be blue?

Does the equation specify a function with independent variable x? If so, find the domain of the function. If not, find a value of x to which there corresponds more than one value of y. 6 x plus 13 y6x+13yequals=2828 Select the correct

You are factoring x² + 11x - 26. What do the signs of the terms tell you about the factors?

Write the quadratic equation whose roots are - 2 and 1, and whose leading coefficient is 4.

Given the linear equation x - y = 5, find the slope of its graph. A.-5 B.-1 C. 1 D. 5

Use the definition of continuity to determine whether f is continuous at a. f (x) = x-4x+5; a = 4 Not continuous Continuous