Answer:
Step-by-step explanation:
The equation is:
√b+20 - √b = 5
The first step is we will add √b to both sides:
√b+20 -√b +√b = 5 +√b
√b+20 = 5+√b
Now take square at both sides:
(√b+20)^2 = (5+√b)^2
b+20 = 25+10√b+b
Now combine the like terms:
b+20-25-b=10√b
-5 = 10√b
Divide both the terms by 10
-5/10 = 10√b/10
-1/2=√b
Take square at both sides:
(-1/2)^2 = (√b)^2
1/4 = b
So in this type of question we add radical terms to both sides and square both sides twice....
Answer:
see below
Step-by-step explanation:
The third table shows a relationship of y=2x.
_____
Essentially, you have to see whether the value of y/x is constant for all the values in a table. If it is not, then the relation is not proportional.
in the first table, -4/-2 ≠ -3/-1
in the second table, -4/-2 ≠ 3/1
in the fourth table, -4/-2 ≠ 6/2
An average worker's time is 14%. Is it true?
The surface area of ANY sphere ... EVERY sphere ... is
Area = (4 pi) x (radius)² .
All you have to do is take the radius, square it,
and multiply by 4 pi.
If you only know the diameter, the radius is half of it.
So for your sphere, the surface area is
(4 pi) x (1 unit)²
= (4 pi) x (1 square unit)
= 4 pi square units.
Skew lines are lines that are not parallel and do not intersect. The answer cannot be the last two choices because line BD will intersect with GC. The answer has to be the first choice because in the second choice, EA is prallel to GC.
