If you wanna check the answer apply the foil method
It took 32 minutes for Ella to go to school on Friday.
Step-by-step explanation:
Time for first four days in minutes,
30,28,34,31
Let x be the time on Friday
Average = 31 min
As we know

Multiplying both sides by 5;

It took 32 minutes for Ella to go to school on Friday.
Keywords: Average, Addition
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The correct answr is 24 3/4 just took the test
If r is the radius of a sphere its surface area = 4(pi)r^2.
If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2.
So the surface area becomes 4-fold or the increase in surface area is 300%.
Answer:
95.1
Step-By-Step Explanation
78:82*100 =
(78*100):82 =
7800:82 = 95.12
Now we have: 78 is what percent of 82 = 95.12
Question: 78 is what percent of 82?
Percentage solution with steps:
Step 1: We make the assumption that 82 is 100% since it is our output value.
Step 2: We next represent the value we seek with x.
Step 3: From step 1, it follows that 100%=82
Step 4: In the same vein, x%=78
Step 5: This gives us a pair of simple equations:
$100\%=82(1)
$x\%=78(2)
Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have
100% over x% = 82 over 78
Step 7: Taking the inverse (or reciprocal) of both sides yield
x% over 100% = 78 over 82
x = 95.12%
Therefore, 78 is 95.12% of 82
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