Answer: 13.5
Step-by-step explanation:
30% = 0.3.
Thus, simply do 0.3*45 to get 13.5.
Hope it helps <3
Answer:
x=4
Step-by-step explanation:
EF is half of the top and bottom lines comined so you would make an equation:
5x+8/2=2x+6
5x+8=4x+12
x=4
Given:
In triangle XYZ, x = 27 cm, y = 79 cm and
.
To find:
The length of z.
Solution:
In triangle XYZ, using the Law of cosine, we get

Putting the given values in the above formula, we get




Taking square root on both sides.


Approx the above value to the nearest number and side length cannot be negative. So,

Therefore, the length of z is about 102 cm.
Answer:
20 feet
Step-by-step explanation:
= 
Simplify 
= 
Every 1 second, a person will walk 2 feet.
= 
X = 20 feet