The area of a traingle is 10 sq in and the height is 5 in find the base

4in.

Step-by-step explanation:

We have several formula for finding the area of a triangle. But with this, since it involves the base and the height, we use

Area of triangle. = (1/2)bh, where b = base and h = height. The area us given and the height, to find the base, we now equate the formula above with the value which is 10 and find the base. Now

(1/2) x b x h = 10in²

b x h = 20

b x 5 = 20

5b. = 20

Therefore,

b = 4in.

look a the sides they are perpendicular

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.