Answer:That student has forgot to convert it into minutes and then convert it to hours
Step-by-step explanation:
1020/7=17 minutes and
17/60=0.283hours
Let's say you have 1/2 and 4/8
1.) Simplifying
Divide 4/8 by 4 to the numerator and denominator. You should get 1/2 which is equivalent to 1/2
2.) Cross multiplying
Cross multiply 1/2 x 4/8 (you multiply the numerator to the other fraction's denominator).
You should get 1 x 8 = 2 x 4
This simplified is 8 = 8 which is true.
Therefore the two fractions are equivalent. Hope this helps! :)
Check the picture below.
now, let's notice the larger "yellow" semicircle, it has a gap, the gap on the right is of a semicircle with a diameter of 10, BUT it also has a descender on the left, a part that's hanging out, that part is also a semicircle.
so if we use the descending semicircle to fill up the gap on the right, we'll end up with a filled up larger semicircle, whose diameter is 20, and whose radius is 10 cm.
![\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=10 \end{cases}\implies A=\pi 10^2\implies A=100\pi \\\\\\ \stackrel{\textit{half of that for a semicircle}}{A=\cfrac{100\pi }{2}}\implies A=50\pi \implies \stackrel{\pi =3.142}{A=157.1}](https://tex.z-dn.net/?f=%5Cbf%20%5Ctextit%7Barea%20of%20a%20circle%7D%5C%5C%5C%5C%20A%3D%5Cpi%20r%5E2~~%20%5Cbegin%7Bcases%7D%20r%3Dradius%5C%5C%5B-0.5em%5D%20%5Chrulefill%5C%5C%20r%3D10%20%5Cend%7Bcases%7D%5Cimplies%20A%3D%5Cpi%2010%5E2%5Cimplies%20A%3D100%5Cpi%20%5C%5C%5C%5C%5C%5C%20%5Cstackrel%7B%5Ctextit%7Bhalf%20of%20that%20for%20a%20semicircle%7D%7D%7BA%3D%5Ccfrac%7B100%5Cpi%20%7D%7B2%7D%7D%5Cimplies%20A%3D50%5Cpi%20%5Cimplies%20%5Cstackrel%7B%5Cpi%20%3D3.142%7D%7BA%3D157.1%7D)
<span>The volume of a cone is: Vcone = 1/3 × pi × r^2 × h = 1/3 * 3.14 * (6/2)^2 * 10 = 94.2 in.3. The approximate volume of the funnel is 94.2 cubic inches.</span>
1/5+1/5+1/5+1/5+1/5+1/5=6 divided
