Answer:
x = 14 or —12
Step-by-step explanation:please see attachment for explanation
AC = √(40²-12²) = √(1600-144) = √1456 = 4√91
tanA = 12/4√91 = 3/√91 = 3√91/91
option а.
The perimeter of the triangle is B) 27.4
Please let me know if you need an explanation.
Answer:A2 - b 2=(a + b) ( a - b) where a =2 and b =x2.
2(2 + x2) ( 2 - x2)
Step-by-step explanation:
Since both terms are perfect squares, factor using the difference of squares formula,
Let's first convert Lancy's height into inches, since it includes feet.
There are 12 inches in a foot, so let's multiply 4 by 12.
4×12=48; Add 8 inches since she is 4 feet 8 inches.
48+8= 56
She is 56 inches tall. We need to find the amount of centimeters she is in height. We can do the same thing by multiplying 56 by 2.54.
56×2.54= 142.24
She is 142.24 centimeters tall.
