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kenny6666 [7]
3 years ago
12

When Emily commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 25 minutes and a s

tandard deviation of 2.5 minutes. Out of the 203 days that Emily commutes to work per year, how many times would her cornmute be shorter than 21 minutes, to the nearest whole number?​
Mathematics
1 answer:
Dominik [7]3 years ago
5 0

Answer:

answer 298

Step-by-step explanation:

just focus your module brainless me

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In a sale the price of a bike is reduced by 40% the sale price of the bike is £192 how much did the bike cost before the sale?
OleMash [197]
The original price was £320 before the 40% sale price
4 0
3 years ago
Find the volume of the wedge-shaped region contained in the cylinder x2 + y2 = 49, bounded above by the plane z = x and below by
fiasKO [112]
\displaystyle\iiint_R\mathrm dV=\int_{y=-7}^{y=7}\int_{x=-\sqrt{49-y^2}}^{x=0}\int_{z=x}^{z=0}\mathrm dz\,\mathrm dx\,\mathrm dy

Converting to cylindrical coordinates, the integral is equivalent to

\displaystyle\iiint_R\mathrm dV=\int_{\theta=\pi/2}^{\theta=3\pi/2}\int_{r=0}^{r=7}\int_{z=r\cos\theta}^{z=0}r\,\mathrm dz\,\mathrm dr\,\mathrm d\theta
=\displaystyle\int_{\theta=\pi/2}^{\theta=3\pi/2}\int_{r=0}^{r=7}-r^2\cos\theta\,\mathrm dr\,\mathrm d\theta
=-\displaystyle\left(\int_{\theta=\pi/2}^{3\pi/2}\cos\theta\,\mathrm d\theta\right)\left(\int_{r=0}^{r=7}r^2\,\mathrm dr\right)
=\dfrac{2\times7^3}3=\dfrac{686}3
4 0
3 years ago
Need help asap pls!!!
lisabon 2012 [21]

Answer:

16

Step-by-step explanation:

According to the given description, PS is the mid segment of the \triangle TQR

Therefore by Mid-segment Theorem:

PS = \frac{1}{2}  QR \\  \\ PS = \frac{1}{2}   \times 32 \\  \\ PS =16 \:

3 0
3 years ago
I'm so confused,can someone please explain how to do this,I've watched countless things and can't seem to catch on. Thanks!(:
avanturin [10]

Answer:

40cm

Step-by-step explanation:

5 0
3 years ago
Estimate the product by rounding 2 x 6,254
Pavlova-9 [17]
5 × 6,254= 31,300 is the awnser :)
6 0
3 years ago
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