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german
2 years ago
11

I will mark the best answer as brainliest.

Mathematics
2 answers:
dimulka [17.4K]2 years ago
6 0

Answer: They didn't solve the problem all the way, you need to find the square root of 674. The final answer is 25.96

Step-by-step explanation:

a^{2} + b^{2}= c^{2}

7^{2} + 25^{2} = 674

\sqrt{674} = 25.96

Arte-miy333 [17]2 years ago
5 0

Answer:

= sq rt 576

25^2 - 7^2 = c^2

25^2 - 7^2 =c^2

sq rt 576  = c^2    

Answer is sq rt 576  it is not sq rt 674 = c^2 as we are given the hypotenuse to square and so we subtract b^2 from it to give a^2

we can use hypotenuse and any right angle side b^2 to find a^2

c^2 - b^2 = a^2 is formula

25^2 - 7^2 = a^2

25^2 - 7^2 =a^2

sq rt 576  = a^2  

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An urn contains 5 red balls and 2 green balls. Two balls are drawn one after the other. What is the probability that the second
AleksAgata [21]

Answer:

<em>The probability that the second ball is red is 71%</em>

Step-by-step explanation:

<u>Probabilities</u>

We know there are 5 red balls and 2 green balls. Let's analyze what can happen when two balls are drawn in sequence (no reposition).

The first ball can be red (R) or green (G). The probability that it's red is computed by

\displaystyle P(R)=\frac{5}{7}

The probability is's green is computed by

\displaystyle P(G)=\frac{2}{7}

If we have drawn a red ball, there are only 4 of them out of 6 in the urn, so the probability to draw a second red ball is

\displaystyle P(RR)=\frac{5}{7}\cdot \frac{4}{6}=\frac{10}{21}

If we have drawn a green ball, there are still 5 red balls out of 6 in the urn, so the probability to draw a red ball now is

\displaystyle P(GR)=\frac{2}{7}\cdot \frac{5}{6}=\frac{5}{21}

The total probability of the second ball being red is

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7 0
3 years ago
The population of a small town is 39,668 and has been continuously declining at a 1.5% a year what will the population be in 13
anyanavicka [17]

Answer:  31, 932.74

Step-by-step explanation:

The population of the small town              =  39,668

Yearly rate of decline                                 = 1.5%

Therefore, to calculate 1.5% of 39,668       = 1.5  x 39,668

                                                                         ------------------

                                                                                  100

                                                                      =   595.02

So, the population is declining by 595.02 on yearly basis.

To ascertain what will the population would have declined to in the next 13 years,

We multiply ,                                                = 595.02 x 13

                                                                      =7,735.26

Now population in 13 years                         = 39,668 - 7,735.26

                                                                      = 31,932.74

                 

                                                                                 

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