Answer:
The answer is a. 21.
Step-by-step explanation:
We solve this question by using Pythagoras theorem to relate the sides of a right angled triangle.
Here,
Hypotenuse of the given triangle(c)=75
Two sides of right angled triangle are:
a=72
b=?
Then,
for a given right angled triangle abc,
Using Pythagoras theorem,

Squaring on both sides,

or,
or, 
or,
or,
∴
So, the value of b is obtained to 21 by the use of Pythagoras theorem.
Answer:
10f ?
Step-by-step explanation:
fx10
Answer:
a. 40
Step-by-step explanation:
Given
and 


We plug in 2x into
.


We now substitute x=-3.


The correct choice is A.
Answer: $3,250
Step-by-step explanation:
5% is the same as 0.05
$65,000 x 0.05 = $3,250