First, find out how much each man works. If eight men take 10 days to build 150 m of wall, then that means that it takes 80 man days to build 150 m. One Man day is then 150÷80, in other words 1.875. If eight men have already been working for six days, then they have spent 8×6 man days, 48. 48 men days times 1.875 m of wall per man day equals 90 m of wall have been built. So, you have four days left to build the remaining 60 m of wall as well as 45 extra meters, in other words, 105 m total. 105 m divided by four days equals 26.25 m need to be built every day. Since one man builds 1.875 m of wall every day, to find the number of men total you need for the last four days, take 26.25÷1.875, Which equals 14 exactly. 14 is not the answer however, because it’s asking how many more men you need. Since you already have eight, you need six more to make 14
The answer is six more men
The answers that you put are right.
Good job!
Answer:
B) 20 and E) 40
Step-by-step explanation:
4 = 2*2= 2²
10=2*5
Common denominators = 2²*5=4*5=20
20,40
Answer:
Step 2: He should have added 3 to, rather than subtracting 3 from, both sides.
Step-by-step explanation:
1. Combine like terms: 6b − 3 = −21
2. Subtraction property of equality: 6b = −24
Here he has to add 3 on both sides, to isolate the variable term.
Therefore, answer is Step2) He should have added 3 to, rather than subtracting 3 from, both sides.
Hope this will helpful.
Thank you.
In constructing 98% confidence intervals for means, it is true that the statistic is good enough, and is less uncertain.
<h3>What is a confidence interval?</h3>
A confidence interval expresses the degree of uncertainty surrounding a given statistic. A margin of error is frequently used with confidence intervals. It reveals the degree to which you may be certain that the findings of a poll or survey correspond to what you would anticipate discovering if it were possible to poll the complete population. Levels of confidence are inextricably linked to confidence intervals.
Your level of confidence in your findings is shown by the confidence interval. You can never be certain that your results will hold for future surveys or experiments. In statistics, being 95% or 98.5% certain is typically seen as "good enough."
Learn more about confidence intervals here:
brainly.com/question/16974109
#SPJ4
