Answer:
20% + 100% = 120% therefore ( 316x120% ) ÷ 100 = 379.2 = original price
30 students, or 100% are in Mr. Holland's music class.
30% of 30 play in a school band.
[NOTE: How to calculate percentage of something]
*100% times 0.[%]*
30 times 0.30 = 9.
Answer: 9 students play in a school band.
The divergence of <em>F</em> is
div(<em>F</em> ) = ∂(<em>x</em> + <em>yz</em>)/∂<em>x</em> + ∂(<em>y</em> + <em>xz</em>)/∂<em>y</em> + ∂(<em>z</em> + <em>xy</em>)/∂<em>z</em>
div(<em>F</em> ) = 1 + 1 + 1
div(<em>F</em> ) = 3
Answer:
Step-by-step explanation:
Adding both equations
4x+5y+5y-4x=19+38
10y = 57
y= 5.7
Subtracting equation i from ii
5y-4x-4x-5y=38-19
-8x=9
x= -0.9