A stack of boards is in the storage shed. Each board is 2-1/5 inches high and there are 21 boards. How many inches high is the s
tack?
a
231/2
b
46-1/5
c
42-1/5
d
231/5
2 answers:
Answer:
b) 46⅕
d) 231/5
Step-by-step explanation:
2⅕ = 11/5
(11/5) × 21
= 231/5
= 46⅕
Answer:
46 1/5 inches tall
Step-by-step explanation:
We know each board is 2 1/5 inches high
Change this to an improper fraction
2 1/5 = (5*2+1)/5 = 11/5
Multiply this by the number of boards
11/5 * 21 = 231/5
Change this back to a mixed number
5 goes into 231 46 times
46*5 = 230 there is 1 left over
46 1/5 inches tall
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r = ![\sqrt[3]{\frac{3V}{4\pi } }[/texgiven [\frac{4}{3}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B%5Cfrac%7B3V%7D%7B4%5Cpi%20%7D%20%7D%5B%2Ftex%3C%2Fp%3E%3Cp%3Egiven%20%5B%5Cfrac%7B4%7D%7B3%7D)
πr³ = V ( multiply both sides by 3 to eliminate fraction )
4πr³ = 3V ( divide both sides by 4π )
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r = ![\sqrt[3]{\frac{3V}{4\pi } }](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B%5Cfrac%7B3V%7D%7B4%5Cpi%20%7D%20%7D)
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Answer: D (Frankfurt)
Step-by-step explanation:
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Hope This Helps!
100cm=1m
1cm=0.01m
2500cm=xm
since 1cm=0.01m
2500*0.01=25m
answer is 25m
