the whole exam will be 100%, and let's say that's "x" questions, but we also know that 9 is 60% of that so
![\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 9&60 \end{array}\implies \cfrac{x}{9}=\cfrac{100}{60}\implies \cfrac{x}{9}=\cfrac{5}{3}\implies 3x=45 \\\\\\ x=\cfrac{45}{3}\implies x=15](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Barray%7D%7Bccll%7D%20amount%26%5C%25%5C%5C%20%5Ccline%7B1-2%7D%20x%26100%5C%5C%209%2660%20%5Cend%7Barray%7D%5Cimplies%20%5Ccfrac%7Bx%7D%7B9%7D%3D%5Ccfrac%7B100%7D%7B60%7D%5Cimplies%20%5Ccfrac%7Bx%7D%7B9%7D%3D%5Ccfrac%7B5%7D%7B3%7D%5Cimplies%203x%3D45%20%5C%5C%5C%5C%5C%5C%20x%3D%5Ccfrac%7B45%7D%7B3%7D%5Cimplies%20x%3D15)
Putting this into expression form, it would be:
12 ÷ (h + 2)
Hope this helps!
To solve this problem you must apply the fomrula for calculate the area of a cylinder, which is shown below:
A=2πrh+2πr^2
Where r is the radius and h is the height of the cylinder
You have that r=15.1 inches and h=12.8 inches, then:
A=2πrh+2r^2
A=2π(15.1 in)(12.8 in)+2π(15.1 in)^2
A=2647 in^2
The answer is 2647 in^2
Answer:
0.2692307692
Step-by-step explanation:
14/52 = 0.2692307692