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photoshop1234 [79]
2 years ago
6

The winning times for a race are shown in the table.

Mathematics
1 answer:
bonufazy [111]2 years ago
8 0

Answer: The winning time increased by an average of 0.4 second per year from year 2 to year 4.

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A foam kickboard to use for swimming has two identical hand grips.
arsen [322]

Answer:

a. 215.6 in^3

b. 1.51 lb

Step-by-step explanation:

The area of each hand grip hole is that of a circle of radius 0.6 in together with a rectangle 2 in long and 1.2 in wide. So, that area is ...

π·(0.6 in)^2 + (2 in)(1.2 in) = (0.36π +2.4) in^2

The area of the kickboard before the hand grip holes are put in is that of a semicircle of radius 5.5 in together with a rectangle 12 in long and 11 in wide. So, that area is ...

(1/2)·π·(5.5 in)^2 + (12 in)(11 in) = (15.125π +132) in^2

Taking the hand grip holes out, the top area of the board is ...

((15.125π +132) -2(0.36π +2.4)) in^2

= (14.405π + 127.2) in^2

___

a. The volume is the product of the area and the thickness, so is ...

((14.405π +127.2) in^2)·(1.25 in) ≈ 215.568 in^3

__

b. The weight of the kickboard is the product of its volume and its density:

(215.568 in^3)(0.007 lb/in^3) ≈ 1.509 lb

4 0
3 years ago
Find the smallest value of k such that 16k is a perfect cube.​
IrinaK [193]

Answer:

0

Step-by-step explanation:

The smallest perfect cube would be 0 since it cannot be negative and zero raised to the third power would still be 0

3 0
3 years ago
Read 2 more answers
Please help i'm not doing good in math i will give you the crown
sp2606 [1]

Answer:

B

Step-by-step explanation:

The format for quadrant 2 would be (-,+) and answer choice be fits that because it is(-3,2)

6 0
3 years ago
A rectangle has an area of 182 square meters and a base of 14 meters. What is the height?
katrin2010 [14]

Answer:

2488

Step-by-step explanation:

times 182 by 14 and it = 2488

5 0
3 years ago
Read 2 more answers
The ratio of green houses to white houses in Queens is 5 to 7. There are 63 white houses, How many green houses are there?
Ludmilka [50]
45 to 63

Your welcome my guy
3 0
2 years ago
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