Answer:
The two numbers are -419 and -2095.
Step-by-step explanation:
5x=y
x-y=1676
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x-5x=1676
-4x=1676
x=1676/-4
x=-419
5(-419)=y
y=-2095
The volume of the candle initially is:
V=Ab*h
Area of the base of the cylinder: Ab=pi*r^2
pi=3.14
Radius of the base: r=4 cm
Height of the cylinder: h=6 cm
Ab=pi*r^2
Ab=3.14*(4 cm)^2
Ab=3.14*(16 cm^2)
Ab=50.24 cm^2
V=Ab*h
V=(50.24 cm^2)*(6 cm)
V=301.44 cm^3
The candle melts at a constant rate of:
r=(60 cm^3)/(2 hours)=(120 cm^3)/(4 hours)=(180 cm^3)/(6 hours)
r=30 cm^3/hour
The amount of candle melted off after 7 hours is:
A=(30 cm^3/hour)*(7 hours)
A=210 cm^3
The percent of candle that is melted off after 7 hours is:
P=(A/V)*100%
P=[(210 cm^3)/(301.44 cm^3)]*100%
P=(0.696656051)*100%
P=69.66560510%
Rounded to the nearest percent
P=70%
Answer: 70%
Answer:
sorry i cant I really need the points tho
B at least 70% i had the same question before and that was correct
Answer:
week one had more boys
Step-by-step explanation:
3 x 5 = 15, 2 x 5 = 10
5 x 3= 15, 3 x 3 = 9
