Where is substitution should be used to rewrite 4x^4-21x^2+20=0

Find the value of k such that the system of linear equations is inconsistent. 6x 2y = 10 - 9x ky = - 14

Luxurious rental cars charges $74.00 per day plus $1.5 per mile to rent a convertible. If Isabella paid $95.60 for a one-day rental, how many miles did she drive?

In a poll of the students in mrs. Rodriguez's class, six say they leave within six blocks of school. This amounted to 20% of the class, how many students are in Mrs. Rodriguez's class?

Leanne is trying to choose between two party dresses that originally cost $120 one dress is on 1/4 off and the $40 what is the price of less expensive dress

Write 1.48 repeating as a mixed number

The base-path of a baseball diamond form a square. if it is 90 ft from home to first, how far does the catcher have to throw to catch someone stealing second base?

What is the lcm of 3,8

An airplane flies horizontally from east to west at 280280 mi/hr relative to the air. if it flies in a steady 3030 mi/hr wind that blows horizontally toward the southwest (45degrees° south of west), find the speed and direction of the airplane

Solve for y - 3 (y+5) = 15

Tim is a first grader and reads 28 words per minute. Assuming he maintains the same rate. How many words can he read in 5 minutes?