Answer:
75
Step-by-step explanation:
Answer:

Step-by-step explanation:
We can treat 20v as a regular number and not a term.
To simplify this square root, we need to break it down into parts which can be squared.

Square root of 4 is 2, so that goes outside the radical.
.
Hope this helped!
Answer:



Step-by-step explanation:
Given
Represent
3-point word with T;
2-point with U and
1-point with V
--- (1)
If total questions is 30, then
--- (2)
If total points is 55, then
--- (3)
Substitute 5 + V for U in (2) and (3)
--- (2)


---- (4)
--- (3)





Divide through by 3
---- (5)
Subtract (5) from (4)



Recall that:



Substitute 10 for V in (5)



Answer:
81
Step-by-step explanation:
9 x 9 = 81
So, 81 is the perfect square.
Answer:
The solution is given by s=9 because it makes the value of 3s+12 equal to 21.
Step-by-step explanation:
If you replace s with 9 you will get 21