1. 3/10
2. 23/8
3. -5/1
4. 16/1
5. -7/4
6. 4 5/10
7. 3/1
8. 11/100
So the formula is 2pi(r)(h)+2(pi)(r^2)
2(3.14)(40)(17)+2(pi)(40^2)
so then multiply and add it up and you get
about 14,325 1/3 or 14,325.34
Answer:
Final answer is x=90, 
Step-by-step explanation:
Given equations are:
-x-4y=37 ...(i)
-2x-4y=-53 ...(ii)
multiply (ii) by -1
2x+4y=53 ...(iii)
Add (i) and (iii)
x=90
plug value of x=90 into (i)
-x-4y=37
-90-4y=37
-4y=37+90
-4y=127

Hence final answer is x=90, 
Answer:
x=15, y=19
Step-by-step explanation:
To work out how much something was before the discount, you have to divide the price (which is £90) by 75 (as this is the percentage that you paid). It's gives you £1.20. Therefore, 1% is £1.20. To find the original cost, which is 100%, you have to multiply it by 100. Multiplying £1.20 by 100 gives you £120.
Therefore, the cost of the TV before the 25% reeducation was £120.
Hope this helps :)