Solve by factorisation

2x2 + 3x - 20 = 0

Question - Dan and Perry each improved their yards by planting rose bushes and shrubs. They bought their supplies from the same store. Dan spent $17 on 1 rose bush and 7 shrubs. Perry spent $49 on 7 rose bushes and 14 shrubs.

The lengths of the sides of a triangle are represented by 3m, 3m and 3m. Q1. What is an expression, in simplest form, for the perimeter of the triangle? A: Believe 3 (3m) or 9m? Q2.

Which is the best step to do next to solve the equation by completing the square? The first few steps in solving the quadratic equation 5x2 + 27x = 14 - 13x by completing the square are shown.

What is the value of the base in the power (-125) - 3? (-3 is an exponent)

I have 2 questions. 1) Of the 100 students enrolled at the dance studio, 50 take ballet and 24 take tap dancing. Eight of the students who take ballet also take tap dancing.

There are 7 red, 8 green, and 6 blue marbles in bag. Kate is going to select one marble at random. What is the probability that she will select a green or blue marble?

And above swimming pool is leaking after 1/2 hour the pool has leak 7/8 gallons of water how many gallons of water per hour is the swimming pool leaking

Express this phrase as a unit rate: 10 1/2 teaspoons in 14 ounces

What is halfway between 26750 and 27250

What is the solution set of this system of equations? y = x2 - 3x - 4 x = y + 8 A. { (-1, 0), (4, 0) } B. { (8, 0), (0, 8) } C. { (0, 0) } D. { (2, - 6) } E. There is no real solution.