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Aleks04 [339]
3 years ago
5

Hiro used 60 square inches of fabric.To make a triangular sail for his model sailboat. The base of the sail was 8 inches what wa

s the height of the sail?
Mathematics
1 answer:
andrey2020 [161]3 years ago
7 0

Answer:

Height of the sail is 15 inches.

Step-by-step explanation:

Given:

Area of the fabric = 60\ in^2

Base of the sail = 8 in.

We need to find the height of the sail.

Solution:

Let the height of the sail be 'h'.

Now we know that;

Area of Triangle is given by half time base multiplied by the height.

framing in equation form we get;

60=\frac12\times8\times h\\\\60=4h

Dividing both side by 4 we get;

\frac{60}{4}=\frac{4h}{4}\\\\h= 15\ in

Hence height of the sail is 15 inches.

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Vlada [557]

Answer:

\mu = 20.3

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And we can find the limits in order to consider values as significantly low and high like this:

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Step-by-step explanation:

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".

Solution to the problem

For this case we can consider a value to be significantly low if we have that the z  score is lower or equal to - 2 and we can consider a value to be significantly high if its z score is  higher tor equal to 2.

For this case we have the mean and the deviation given:

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Low \leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5

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