Answer:
35 calories
Step-by-step explanation:
create a proportion and solve.
30/150= 7/x
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Total amount = $520
Sharing Ratio = 2 : 4 : 7

First Student Ratio : 2
Second Student Ratio : 4
Third Student Ratio : 7
Total Quantities of ratio = 2 + 4 + 7 = 13
<u>Formula</u><u> </u><u>applied</u><u> </u><u>:</u><u> </u>
Share = Ratio of Student / Total quantities of ratio × Total amount
First Student share :
= 2/13 × 520
= $80
Second student share:
= 4/13 × 520
= $160
Third Student share :
= 7/13 × 520
= $280 .
Proof :
Total share = $520
( 80 + 160 + 280 )= $520
$520 = $520
Answer:
Its C. you can plug it in to make sure :D
Step-by-step explanation:
Area as a function of width, w is:
a(w)=(w-25)^2+625
for maximum area, the width will be:
a'(w)=2(w-25)+0=0
solving for w we egt
2w-50=0
2w=50
w=25 m
given that the perimeter is 100, the length will be:
100=2(L+W)
solving for L we get:
L=50-W
but W=25m
hence
L=50-25=25 m
thus the maximum area will be:
A=L*W=25*25=625m^2