how do you use equations to solve problems about area of rectangles parallelograms trapezoids and triangles

Answers

Answer 1

Answer: area of parellelogram and rectangle=bh

trapezoid A=(b1+b2)h÷2

triangle A=bh÷2

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Two sides of a right triangle are 8” and 12”.A. Find the the area of the triangle if 8 and 12 are legs.B. Find the area of the triangle if 8 and 12 are a leg and hypotenuse.

What is 15% of eight?

Answers

1.2 8 x 15 percent = 8 x .15 = 1.2

Find the roots of the quadratic equation x^2-8x=9 by completing the square. Show your work.

Answers

$x^(2) -8x=9 \n x^(2) -8x+(-4)^(2) = 9 + (-4)^(2) \n x^(2) -8x+16 = 9 + 16 \n (x-4)^(2) =25 \n x-4= √(25) \n x-4= \pm 5 \n x= \pm 5+4$
x = 5 + 4 or -5 + 4
x = 9 or -1

What is 925 divided by 8 with remainders please help my homework is due tomorrow

Answers

925 ÷ 8
9 ÷ 8 = 1 r1
put 1 before the 2 = 12
12 ÷ 8 = 1 r 4
4 before 5 = 45
45 ÷ 8 = 5 r 5
So it's 115 r 5

115 and 5/8 refered

aleena has a watering can. she uses 3/8 gallonto water her roses and1/3 gallon to water the geraniums . How much water did. Aleena use to water both thermoset and geraniums?

Answers

the answer is simple to work out you do 3/8 + 1/3

but the denominators are different so you find the lowest common multiple in this case 24 .
the frection is now 9/24 + 8/24 this is 17/24
I changed the fraction by doing this 24(common multiple) divided by 8 (denominator) that's how I got it if you don't understand just ask me

What is 7.4% written as a decimal?