Roger ate of a pizza. What percent of a pizza did he eat?
1 answer:
You might be interested in
Answer:
a). 59.049°C
b). 2.1179 seconds
Step-by-step explanation:
Expression representing the final temperature after decrease in temperature of the metal from 100°C to T°C is,
T =
where x = duration of cooling
a). Temperature when x = 5 seconds
T = 100(0.9)⁵
= 59.049
≈ 59.049°C
b). If the temperature of the metal decreases from 100°C to 80°C
Which means for T = 80°C we have to calculate the duration of cooling 'x' seconds
80 =
0.8 =
By taking log on both the sides
log(0.8) =log[]
-0.09691 = x[log(0.9)]
-0.09691 = -0.045757x
x =
x = 2.1179
x ≈ 2.1179 seconds
Answer:
The Choice N#1 will give more pizza for your money
Step-by-step explanation:
step 1
Find the area of one slice Choice #1
The area of the circle is equal to
we have
----> the radius is half the diameter
assume
The area of one slice is equal to
substitute
Divide the cost by the area
step 2
Find the area of the entire personal pizza Choice # 2
The area of the circle is equal to
we have
----> the radius is half the diameter
assume
substitute
Divide the cost by the area
therefore
The Choice N#1 will give more pizza for your money