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Nitella [24]
2 years ago
8

The Pythagorean Theorem can be used to find the missing side length of a triangle when two other side lengths are known.

Mathematics
1 answer:
lubasha [3.4K]2 years ago
5 0

Answer:

The value of b is 21

Step-by-step explanation:

29=√20^2+b^2

or, 29=√400+b^2

or, 841=400+b^2

or, 841-400=b^2

or, √441=b

b=21

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Add or subtract the given percent from
leonid [27]

71% subtracted from 100% is 29%

<h3>Complete question</h3>

Add or subtract the given percent from 100%.

71%

<h3>How to solve the expression?</h3>

The percentage (p) is given as:

p = 71%

When subtracted from 100%, we have:

100% - p

Substitute p = 71%

100% - 71%

71 subtracted from 100 is 29.

So, we have:

100% - 71% = 29%

Hence, 71% subtracted from 100% is 29%

Read more about percentages at:

brainly.com/question/843074

#SPJ1

7 0
2 years ago
2. Leandro trabaja en una panadería, el panadero principal le pidió que calculara a cuántos kilogramos equivale una medida de ha
IrinaVladis [17]
I don’t understand Spanish
7 0
3 years ago
Help please with this question​
torisob [31]

Answer: 70ft

Step-by-step explanation:

ht= (-3)^2 + 15(3) + 16

ht= 9 + 45 + 16

ht= 70

3 0
2 years ago
Read 2 more answers
6² / (6+3) + 18 / 3 - 3²<br><br><br> /- divided by
Nataliya [291]
All you have to do is go in the order of operations, and your answer is simple:
<span>6² / (6+3) + 18 / 3 - 3²
= 36 / (9) + 6 - 9 
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6 0
2 years ago
On a test, mean score was 70 and the standard deviation of the scores was 15. What percent of the test takers scored above 80
Anna007 [38]

Answer:

25%.

Step-by-step explanation:

When calculating percentile of a value within a sample population, you'll want to use what's called the z-score formula, notated as such:

z = (x – μ) / σ

Or, the z-score equals the difference of the x-value minus the mean (μ), divided by the standard deviation (σ). We can use the equation to sub in our numbers:

z=\frac{80-70}{15}\\z=\frac{10}{15}\\\\z=\frac{2}{3} \\z=0.667

Since we are looking for scores above 80, what we want to find is the area under the normal distribution curve that is to the <em>right</em> of our value of 80, or the pink area illustrated in the attached picture.

For this, we can use the standard Z table to look up our z-score and find what percent of our chart we've filled, to the <em>left</em> of our value. You can find Z tables in algebra textbooks or online, like this one: http://www.z-table.com/

In this instance, our z-score gives us a resulting Z table percentile between .7454 (z-score of 0.66) and .7486 (z-score of 0.67). This means that, in our normal distribution with a mean of 70 and a standard deviation of 15, the area to the <em>left</em> of the value of 80 is about 74.6%.

So, now we know that our value of 80 makes up about 74.6% of our curve from the left. To find the area to the <em>right</em>, we just subtract from the total area, which is 1 in a normally distributed curve. This gives us 25.4%. Since we're looking for the percent of test takes scoring above our value, I'll round that down to 25%.

3 0
3 years ago
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