7th Grade math questions need help!?
Reaction time measures how quickly a runner reacts to the starter pistol. In the 100-meter dash at the 2004 Olympic Games. Lauryn Williams had a reaction time of 0.214 seconds. Her total Race time including reaction time was 11.03 seconds., How long did it take her to run the actual distance?
The circumference of a women’s NCAA college softball must be between 11 7/8 inches and 12 1/8 inches. What is the greatest possible difference in circumference between two softballs that meet the standard.
The gutter of a bowling lane measures 9 5/16 inches wide. This is 3/16 inch less than the widest gutter permitted and 5/16 inches greater than the narrowest gutter permitted. What is the greatest possible difference in the width of 2 gutters?
1) subtract reaction time from total time
11.03-.214=11.03-.214 = 10.816
2) Subtract minimum allowable from maximum allowable
12 1/8 – 11 7/8 = 2/8, simplify to 1/4
3) Can be as wide as 9 1/2 (9 5/16+3/16)
Can be as narrow as 9 (9 5/16-5/16)
Subtract minimum allowable from maximum allowable
9 1/2 – 9 = 1/2
Bowling : Bowling Lane Length & Width
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