13.

Nurul had $450. She spent 2/5 of it to buy a watch and 4/9 of the

remainder to buy a DVD player,

(a) How much money did she spend altogether?

(b) How much money had she left?

A clothing store reduced the price of a shirt by 25% to $27. What was the original price of the shirt?

What would be the expression after distributing, - 2 (3m+5) ?

Write (-4 + 2i) + (5 - 6i) as a complex number in standard form. a. 9 + 8i b. - 9 - 8i c. - 1 + 4i d. 1 - 4i

What is the solution to the equation shown below? 3/x-2 + 6 = x_2+8

1. Prove that the value of the expression a^2-a is divisible by 2 for any whole value of a. 2. Prove that the sum of three consecutive exponents of the number 2 is divisible by 14.

What is 121 divided by 11

Katherine wanted to determine which of several popular herbicides was most effective on weeds. She grew five flats of 100 grass seeds each for 5 days. She then took each of five herbicides and sprayed the same amount on each flat.

Solve the following system of equations. Give the answer as an ordered pair. 4x - y = - 5 3x + 2y = - 12

What is the following sum in simplest form? √8 + 3 √2 + √ 32 A. 3 √8 + 3 √2 B. 5 √42 C. 9 √2 D. 5 √2 + √32

If Thanos has five Infinity Stones, how many Vision's does he have to kill to have six Infinity Stones?