The number are in the ratio 2:3 and the sum of the number is 225. Find the number?

90 and 135

Step-by-step explanation:

sum the parts of the ratio, 2 + 3 = 5 parts

Divide the sum by 5 to find the value of one part of the ratio.

225 ÷ 5 = 45 ← value of 1 part of the ratio, thus

2 parts = 2 × 45 = 90

3 parts = 3 × 45 = 135

Thus the numbers are 90 and 135

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

what? that isnt a question

step-by-step explanation: