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timofeeve [1]
3 years ago
12

PLEASE HELP

Mathematics
2 answers:
iris [78.8K]3 years ago
6 0
The answer is 3(2n-9)
Colt1911 [192]3 years ago
4 0
3(2n-9) is the equation that is equivalent to 6n-27.
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When designing a study to determine this population proportion, what is the minimum number of drivers you would need to survey t
Vlada [557]

Answer: 601

Step-by-step explanation:

The formula to find the minimum sample size(n) , if the prior population proportion is unknown:

n=0.25(\dfrac{z^c}{E})^2, where E = margin of error , z^c = critical z-value for confidence level c.

Given : E  = 0.04

Z-value for 95% confidence = 1.96

So, the minimum sample size required = 0.25(\dfrac{1.96}{0.04})^2=0.25(49)^2

= 0.25\times 2401=600.25\approx601

Hence, the minimum sample size required = 601

6 0
2 years ago
What is the first step in finding the area of a composite figure?
Oxana [17]

Answer:

A composite figure is made up of simple geometric shapes. To find the area of a composite figure or other irregular-shaped figure, divide it into simple, non overlapping figures. Find the area of each simpler figure, and then add the areas together to find the total area of the composite figure.

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Please help me with this problem
igor_vitrenko [27]
Draw a circle 5 CM find the length then divid that
7 0
3 years ago
76 is 80% of what number?
vfiekz [6]
76 is 80% of 95 and I'll even explain.
80/100 = 76/x from this point you cross multiply which gives you 80x = 76(100) you multiply 76 by 100 and get 7600 so then the equation look like this 80x = 7600 then divide by 80 on both sides and get the answer of x = 95 which is basically your answer I hope this helps :)
8 0
3 years ago
(PLEASE HELP) To feed 7 horses for 4 days, Mark needs 420 kg of grass. How many kilograms of grass does Mark need to feed 9 hors
DerKrebs [107]

Answer:

810kg is the answer

Step-by-step explanation:

Hope this helps:)

7 0
2 years ago
Read 2 more answers
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