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1 year 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]1 year 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]1 year 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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The circumference of a dime is 56.52 mm find the diameter

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So
d= circumference/pi
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NARA [144]

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A sum amount <br>to rupees 34476 in two and a half years at 4% CI. the sum is

Kruka [31]

Given:

Amount = Rs. 34476

Rate of compound interest = 4%

Time = $2\dfrac{1}{2}=2.5$ years

To find:

The principal value.

Solution:

Formula for amount is

$A=P\left(1+\dfrac{r}{100}\right)^t$

Where, P is principal value, r is rate of interest and t is time in years.

Putting the given values, we get

$34476=P\left(1+\dfrac{4}{100}\right)^{2.5}$

$34476=P\left(1+0.04\right)^{2.5}$

$34476=P\left(1.04\right)^{2.5}$

$\dfrac{34476}{\left(1.04\right)^{2.5}}=P$

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$P=31256.0090$

$P\approx 31256$

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2 years ago

Debra shopped on Monday and bought a pair of shoes that was 20% off its original price

natita [175]

Answer:12

Step-by-step explanation:

60 times 20 = 1200 1200 divided by 100 = 12

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2 years ago