The sum of the interior angles of a triangle measures 180°. T or F?

1 answer:

7 0

This is true. The sum of interior angles always add up to 180<span>°.

Hopefully this helps! If you have any more questions or don't understand, feel free to DM me, and I'll get back to you ASAP! :)
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Hannah buys 2 1/2 lbs of dried fruit for $1.50. How much is she paying for one pound of dried fruit?

Virty [35]

$.60 a lb.
Just divide $1.50 by 2.5lbs.

6 0

4 years ago

An electronics company just finished designing a new tablet computer and is interested in estimating its battery-life. A random

Alika [10]

Answer:

$6 \pm 2.861(0.3354)$

Step-by-step explanation:

We have the standard deviation for the sample, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 20 - 1 = 19

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.99}{2} = 0.995$ . So we have T = 2.861.