Answer:
length = 11 yard
width = 5 yard
Step-by-step explanation:
Area of a rectangle = L W
where A = 55 yard
L = 3W - 4
find: Length
width
solution:
A = L W
55 = (3W - 4) W
55 = 3W² - 4W
3W² - 4W - 55 = 0
use quadratic equation to solve for W:
W = <u> - (-4) ± √(-4)² - 4(3)-55 </u>
2(3)
W = 5, W = -11/3
substitute W=5 to equation L = 3W - 4 to solve for L
L = 3W - 4
L = 3(5) - 4
L = 15 - 4
L = 11
therefore, the dimensions of a rectangle:
length = 11 yard
width = 5 yard
Answer:
B. (2 + 5).
Step-by-step explanation:
18 + 45 = 63
The prime factors of 63 = 3*3*7
So 63 is a multiple of 7.
The answer is (2 + 5) (=7).
Answer:
C. choosing among three color choices and between an automatic or manual transmission
Step-by-step explanation:
82 rounded to the nearest ten is 80
Evaluate 2^3+5x(6+4)÷2 following Order of Operations rules (PEMDAS):
Work within parentheses is done first, followed by exponentiation, and then mult. and div., and finally add'n. and subtr'n.
Thus, 2^3+5x(6+4)÷2 becomes 2^3+5x(10)÷2
8 + 50x/2
8 + 25x
