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1) how many significant digits are there in the sum of 45.10 and 102.203?

A3
B4
C5
D6

2) A COMMON SPEED AT WHICH ADULTS ROLL BOWLING BALLS IS 15 MI/H. 15 MI/H IS EQUIVALENT TO HOW MANY FEET PER SECOND?

A0.045
B15
C22
D1320

3) THE APPROXIMATE NUMBER OF CALORIES C AN ANIMAL NEEDS EACH DAY IS GIVEN BY A C= 72m 3/4 , WHERE M IS THE ANIMAL'S MASS IN KILOGRAMS . HOW MANY CALORIES DOES AN 81 KILOGRAM ADULT MALE NEED EACH DAY?

A216 CALORIES
B1944 CALORIES
C4374 CALORIES
D5832 CALORIES

4) HOW MANY SIGNIFICANT DIGITS ARE THERE IN 0.07010?

a) 2
b) 3
c) 4 
d) 5

Verified Answer :

Oi  :)

1) There are 3 significant digits
\(45.10+102.203= 147.303\)

2)
15 Mi/h  =  22 ft/s

3)
\(C= 72*m* \frac{3}{4} \\ \\ C= 72*81* \frac{3}{4} \\ \\ C= \frac{17496}{4} \\ \\ C=4374\)

4)
There are 4 significant digitis. Leter C

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