Answer:
350 girls
Step-by-step explanation:
So,
The secret to solving problems with ratios is to find the value of one unit.
5:7 = 12 units total
To find one unit, divide the total number of students by the total number of units.
600/12 = a
Simplify
50/1 = a
50 = a
The value of each unit is 50.
Now, multiply the units by the numbers in the ratio.
50(5) = b
250 = boys
50(7) = x
350 = x
There are 350 girls.
15 cm^2
A= 5*6/2= 30/2= 15 cm^2
Simple, finding markdown, use these two formulas.
Markdown=Original-New
and
Percent Markdown= Markdown Amount/Original*100
So,
Markdown=612-450
M=162
Markdown%= 162/612*100
M%=0.2647*100
M%=26.5 (rounded)
Thus, there was a 26.5% decrease.
Answer:
Simplify ----2√45 + 3√3 + 2√3
A~ --18√5 + 5√3
B~ --6√5 + 6√3
C~ --2√5 + 6√3
<u>D~ --6√5 + 5√3</u>
Step-by-step explanation:
[tex]-2\sqrt{45}+3\sqrt{3} +2\sqrt{3} =-2\sqrt{45} + 5\sqrt{3} =-6\sqrt{5} + 5\sqrt{3}[/tex
40*30%=12
40-12=28
they would be on sale for $28
with the discount being 12 dollars.
hope this helps!
