2 years ago

The times for running a 5K for a local charity event are Normally distributed, with a mean time of 28 minutes and

Mathematics

2 answers:

aev [14]2 years ago

8 0

Answer:

Answer: D- 37.45

Step-by-step explanation:

I got the answer right, but if you want the math: you find the z-score of 1.75 on the chart, multiply that by the standard deviation to get 9.45, and then add the mean of 28 to get 37.45 minutes

liq [111]2 years ago

7 0

Answer:19.12

I’m not sure if this is the answer but I need the points so here.

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kvasek [131]

Answer:

$\boxed{\sf\: B)\:3^{12}}$

Step-by-step explanation:

$\sf 3^2\times \:3^4\times \:3^6$

<u>Apply exponent rule:</u>

$\hookrightarrow \boxed{\sf a^b\times \:a^c=a^{b+c}}$

$\sf 3^2\times \:3^4\times \:3^6$

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Add the numbers:

$\sf 2+4+6=12$

$\sf \:3^{12}$

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