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Naily [24]
3 years ago
15

Need help please and other questions

Mathematics
1 answer:
earnstyle [38]3 years ago
8 0

Answer: Gear 14 or 14.3

Step-by-step explanation:

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What is the diameter of 144πm2??
Neko [114]
4(pi)m^2 = 144(pi)
4m^2 = 144

m^2 = 36
m = 6cm

diameter = 2m
= 2(6)
= 12cm
3 0
3 years ago
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Out of 32 students in a class, 5 said they ride their bikes to school. based on these results,how many of 800 students in the sc
Colt1911 [192]
Do a proportion.
5/32= x/800
Cross multiply and divide
800 x 5= 4,000
4,000 divided by 32= 125
So answer is 125 students
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Round to the nearest tens 312.432
ValentinkaMS [17]
310, since 4 is not up to 5, then 2 round off to 0
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3 years ago
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NNADVOKAT [17]
I think the answer is B but I am not sure
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Five times the number of test tubes in a school’s chemistry lab exceeds three times the number of beakers it has by 660. The sum
vladimir1956 [14]
5t=3b+660....and....2t+5B=450

from the first we can see that the t=(3b+650)/5 and using this value in the second.

(6+1320)/5+5b=450 making all have common denominator.

6b+1320+25b=2250

31b=930

b=30.. and 2t+5b=450

t=150
4 0
3 years ago
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