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4 years ago

11

For which of the following would similar triangles and trigonometry be useful for measuring?

1 answer:

Helen [10]4 years ago

5 0

The length of a table, the width of a classroom, and the length of a car can be easily measured without using trigonometry (could probably use a meter stick or measuring tape) because we can easily reach both ends the width of a wide river is a little different, it may not be practical to measure the distance across directly.

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Are these calculations correct? If so, please put in descending order:

Mkey [24]

No because the last one is not correct and if you want to text me back if you won't me to do it for you for the first three you can

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3 years ago

A chef uses 1/2 cup of cheese for a small pizza. There are 6 grams of fat in 1/4 cup of cheese. How many grams of fat are in 1/2

Elina [12.6K]

1/4 +1/4= 1/2

6g +6g= 12g

there is 12 grams of fat in 1/2 cup of cheese

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4 years ago

The school party committee has $52 to buy ice cream. Each carton of ice cream costs $3. After buying as many cartons of ice crea

joja [24]

Answer: 17.33

Step-by-step explanation:

You just do 52 divided by 3.

4 0

3 years ago

Read 2 more answers

The number of hours that a nine month old baby sleeps at night are normally distributed with a population standard deviation of

finlep [7]

Answer:

The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this quesstion:

$\sigma = 1.5, n = 22$

So

$M = 1.645*\frac{1.5}{\sqrt{22}} = 0.53$

The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.

4 0

3 years ago

PLEASE HURRY!! PLEASE HELP!!

mario62 [17]

Last topic of the unit

i can apply the law of sines to solve for missing parts of any triangle

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3 years ago