Hey!
Explanation:
↓↓↓↓↓↓↓↓↓↓
First, remove parenthesis.

Secondly, multiple by the numbers.


Third, apply exponents rule.



Finally, refine.

<u><em>Answer⇒⇒⇒⇒28</em></u>
Hope this helps!
Thank you for posting your question at here on Brainly.
Have a great day!
-Charlie
Bare with me a minute, I am still trying to figure it out. Here is what I have so far.
If you convert the fractions to ___/20 then you will see. Here; 2/5 = 8/20. 1/4 = 5/20. I hope this helps.
There would be $13410 because 4500 x 0.22 x 9 = 8910
4500 + 8910 = 13410
We can setup an equation for this.
Boys to Girls = 2:7
Boys = x
Girls = 250+x
Setup the ratio
x:(250+x) = 2:7
x / (250+x) = 2/7
7x = 500+2x
7x-2x = 500
x = 500/5 =100
There are 100 boys at the concert