Hello from MrBillDoesMath!
Answer:
The fourth choice, b = +\- sqrt( sg + a^2)
Discussion:
s = (b^2 - a^2)/g => multiply both sides by "g"
sg = b^2 - a^2 => add a^2 to both sides
sg + a^2 = b^2 => take the square root of each side
b = +\- sqrt( sg + a^2)
which is the fourth choice.
Thank you,
MrB
<h3>Answer: Choice C</h3>
Here's how the verification would look like
using the identity here
Answer:
23
Step-by-step explanation:
3/4 has 3 of 1/4 pieces.
5 has 20 of 1/4 pieces.
Answer:
There you go.
Step-by-step explanation:
Answer:
3/7 of the class are boys
Step-by-step explanation:
we have :
a+b=c
a= girls =16
b=boys = 12
c= total= 28
a/c=16/28=4/7
b/c=12/28=3/7
so we have:
(3/7) * c= 12
(3/7) * 28=12
3/7 of the class are boys
