Answer:
x=7
Step-by-step explanation:
Answer: 172
Explanation:
<u>Mystery</u> <u>Science Fiction</u> <u>Biographies</u>
4x 3x
4y 5y
Science Fiction = 48
3x = 48 ⇒ x = 16
4y = 48 ⇒ y = 12
Mystery: 4x = 4(16) = 64
Biographies: 5y = 5(12) = 60
Mystery + Science Fiction + Biographies = Total
64 + 48 + 60 = Total
172 = Total
Area of triangle = 1/2 absinC
area of triangle = 1/2 (12) (24) sin(30°)
area of triangle = 72 unit²
The area is found by multiplying the length by the width.
The original area = 60 x 40 = 2,400 square feet
He wants to make it 1/2 that size, so the new size would be 2,400 / 2 = 1,200 square feet.
To find the length divide the new area by the new width:
1,200 / 30 = 40
The new length should be 40 feet.
