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Eva8 [605]
3 years ago
9

60 days increased by 70%

Mathematics
2 answers:
miskamm [114]3 years ago
6 0
102 days is the final answer. :)
Arturiano [62]3 years ago
4 0
70% of 60 is just 60 multiplied by 0.7:
60*0.7=42

Then you add to get the total days:
60+42=102

So, in total, you have 102 days.
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Rearrange the formula below to make x the subject. α y+1=2x - 10/x+1​
zaharov [31]

Answer:

cross multiplication

x

7 0
2 years ago
A rectangular prism has a length of 4.2 cm, a width of 5.8 cm, and a height of 9.6 cm. A similar prism has a length of 14.7 cm,
solong [7]
They are each multiplied by a factor of 3.5
You can calculate this by taking the length of the similar prism and divide it with the first prism 14.7/4.2 = 3.5
Do this with the width and height to be sure
20.3/5.8 = 3.5
33.6/9.6 = 3.5
5 0
3 years ago
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THe product of three numbers is 3150. Two of the number are 14 and 15. Find the third number
Sholpan [36]

Answer:

15

Step-by-step explanation:

Let's call the mystery number x.

14\cdot 15\cdot x=3150 \\\\210x=3150 \\\\x=3150/210=15

Hope this helps!

4 0
3 years ago
Read 2 more answers
The Wisconsin Dairy Association is interested in estimating the mean weekly consumption of milk for adults over the age of 18 in
Stolb23 [73]

Answer:

ME = 1.653 *\frac{7.9}{\sqrt{300}}= \pm 0.75

±0.75 ounce

Step-by-step explanation:

Assuming this complete question: The Wisconsin Dairy Association is interested in estimating the mean weekly consumption of milk for adults over the age of 18 in that state. To do this, they have selected a random sample of 300 people from the designated population. The following results were recorded: xbar=34.5 ounces, s=7.9 ounces Given this information, if the leaders wish to estimate the mean milk consumption with 90 percent confidence, what is the approximate margin of error in the estimate?

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X=34.5 represent the sample mean

\mu population mean (variable of interest)

s=7.9 represent the sample standard deviation

n=300 represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=300-1=299

Since the Confidence is 0.90 or 90%, the value of \alpha=0.1 and \alpha/2 =0.05, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,199)".And we see that t_{\alpha/2}=1.653

And the margin of error is given by:

ME = 1.653 *\frac{7.9}{\sqrt{300}}= \pm 0.75

±0.75 ounce

4 0
3 years ago
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Each leg of a triangle measures 12 cm what is the length of the hypotenuse
alexira [117]
The legs are 12 cm each, so the hypotenuse is√(144+144)=12√2☺☺☺☺
6 0
3 years ago
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