Percent error is calculated using
((Actual - predicted) / actual) * 100
In this case, the actual value of the number of pages he read is 20. The expected value was 23. So simply plug in:
((20 - 23) / 20) * 100 = -15%
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Answer:
5^4
Step-by-step explanation:
5^7/5^3
When we divided exponents with the same base
a^b / a^c = a^(b-c)
5^7/5^3 = 5^(7-3) = 5^4
A= 4cm
B= 10cm
C= 8cm
D= 6cm
This one is sort of difficult because you have to visualize the net folding into the shape.
triangle area= 1/2 bh where b is the base and h is the height. Since this is a right triangle, the height will be one of the sides connected to the 90deg angle.
1/2cd= A
1/2 48= A
24cm^2= A
There are 3 other sides. AD= 4*6= 24cm^2
AB= 4*10= 40cm^2
AC= 4*8= 32cm^2
24*2 (2 triangles)= 48+24+40+32= 144cm^2 area for all 5 sides combined.
-4.16 is your answer and I have to fill up space to submit this