Answer:
x = 12.1243557....
Step-by-step explanation:
14² = 7² + x²
Isolate x.
x² = 14² - 7²
x² = 196 - 49 = 147
√x² = √147
x = √147 = 12.1243557....
Answer:
C.y=3|x| and A. 4<x<=5
Step-by-step explanation:
In a 30 60 90 triangle, the short side = one half the hypotenuse = 4.5
The middle side = short side * sq root of 3
So, the middle side = 4.5 * sq root of 3 (
<span>
<span>
<span>
7.7942</span></span></span>)
Perimeter = 4.5 + 7.7942 + 9
Perimeter =
<span>
<span>
<span>
21.2942
</span>
</span>
</span>
Source:
http://www.1728.org/trig2.htm
Answer:
7
Step-by-step explanation:
Answer: b=30
Step-by-step explanation: add 9 to both sides
b−9+9=21+9
b=30