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

A) 3
B) 4
C) 5
D) 6

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?

A) 0.045
B) 15
C) 22
D) 1320

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?

A) 216 CALORIES
B) 1944 CALORIES
C) 4374 CALORIES
D) 5832 CALORIES

4) HOW MANY SIGNIFICANT DIGITS ARE THERE IN 0.07010?

a) 2
b) 3
c) 4 
d) 5



Answer :

Oi  :)

1) There are 3 significant digits
[tex]45.10+102.203= 147.303[/tex]

2)
15 Mi/h  =  22 ft/s

3)
[tex]C= 72*m* \frac{3}{4} \\ \\ C= 72*81* \frac{3}{4} \\ \\ C= \frac{17496}{4} \\ \\ C=4374[/tex]

4)
There are 4 significant digitis. Leter C 

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