The area of a triangle is one-half times the base times the height. If the area of a triangle is 54 sq. in, and its height is 12 in., what is the base?

Step-by-step explanation:

You already know the formula for area of a triangle, so we will write it down and then fill it in with the info given.

and filling in:

and we can simplify that a bit by dividing 12 by 2 on the right side to get:

54 = 6b and dividing:

b = 9 inches

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

2/3x + 7 = 29

step-by-step explanation:

two thirds = 2/3

plus a number = x

at least 29 = 29

there for you should get 2/3x + 7 = 29