Answer:
1a. E = IR, I = 5, R = 3
E = 5 × 3
E = 15
b. A = πrl, π = 3.14, r = 5, l = 20
A = 3.14 × 5 × 20
A = 314
c. S = 90 ( 2n - 4 ), n = 6
S = 90 ((2 × 6) - 4)
S = 90 ( 12 - 4 )
S = 90 ( 8 )
S = 720
The operation is known as rounding of a number.
This means basically if i measure the temperature of a city and it comes out to be 22.9 degrees. I will round it of to 30 degrees or the amount of significant figures i am designated with.
Similarly if its 22.85 and i have to round of to 3 significant figures it becomes 22.9 degrees.
ROunding off is obviously done watching to which digit we have to.
Answer:
Step-by-step explanation:
Put the numbers where x is in the equation and do the arithmetic. For purposes of evaluation, it is often convenient to write the equation in Horner form:
h(x) = (2.8x +.01)x^2 -1
Then ...
h(1) = (2.8 +.01)·1 -1 = 1.81
h(2) = (2.8·2 +.01)·2² -1 = 5.61·4 -1 = 21.44
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If you have several evaluations to do, it is convenient to use a calculator or spreadsheet to do them.
The answer is A.1.06^5t/1.06^2t