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Semenov [28]
3 years ago
6

If a soup recipe calls for 1 cup of carrots for every 3 cups of chicken, how many cups of carrots are needed if we have 18 cups

of chicken?
A. 6
B. 15
C. 3
D. 12
Mathematics
2 answers:
AveGali [126]3 years ago
6 0
How many 3's are there in 18? 6! So we need 6 cups of carrots for 18 cups of chicken!
Lelechka [254]3 years ago
6 0
I am pretty certain the answer is A.6
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Step-by-step explanation:

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3 years ago
a plumber laying 500 meters of drain pipe required 20 men of working for 10 days . What length in meters would be laid by 50 men
belka [17]

Answer:

500 meters =20men =10days

To get the factor 500/(20*10)= 5/2 meters/day

For 50 men and 5days we don't know the meters

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A bird leaves its nest and travels 20 miles per hour downwind for x x hours. On the return trip, the bird travels 4 miles per ho
marysya [2.9K]

a. if the return trip is the same then the bird traveled 40miles

b. the time of the trip is x hours + 6/x-4

Hope this helps!

5 0
3 years ago
Weight of a rock: In a geology course, students are learning to use a balance scale to accurately weigh rocks. One student plans
statuscvo [17]

Answer:

The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

Step-by-step explanation:

What is Confidence Interval?

The confidence interval represents an interval that we can guarantee that the target variable will be within this interval for a given confidence level.  

The confidence interval is given by

CI = \bar{x} + t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } ) \\

Where \bar{x} is the mean weight \sigma is the standard deviation t_{\alpha/2} is the critical value from t-table and n is the sample size.

The term t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } ) is known as margin of error.

As the sample size is decreased the corresponding margin of error increases which results in wider confidence interval which means smaller precision.

The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

We can say with 95% confidence that the true mean weight of the rock is within the interval of (25.2, 29.1).

7 0
3 years ago
Add the fractions:<br> 1/3 + 1/5 =
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Answer:

8/15

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
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