Combine like-terms
-2.1x and 4.9x = 2.8x
3.7 and 5 = 8.7
2.8x + 8.7 is your final answer.
Answer:
x+1=x *x
Step-by-step explanation:
Answer:
18.0
Step-by-step explanation:
==>Given:
Triangle with sides, 16, 30, and x, and a measure of an angle corresponding to x = 30°
==>Required:
Value of x to the nearest tenth
==>Solution:
Using the Cosine rule: c² = a² + b² - 2abcos(C)
Let c = x,
a = 16
b = 30
C = 30°
Thus,
c² = 16² + 30² - 2*16*30*cos 30°
c² = 256 + 900 - 960 * 0.8660
c² = 1,156 - 831.36
c² = 324.64
c = √324.64
c = 18.017769
x ≈ 18.0 (rounded to nearest tenth)
Answer:
16 units
Step-by-step explanation:
The area is given by ...
A = (1/2)Pa
Then the perimeter (P) is ...
1582.56 = (1/2)(21.98)P
P = 1582.56/10.99 = 144
The perimeter is 9 times the side length, so each side is ...
144 units/9 = 16 units . . . . length of one side
