Please show work!!!!!!!

Mathematics

1 answer:

kolezko [41]3 years ago

4 0

Answer:

Step-by-step explanation:

The cylindrical part

Area of the cylindrical part = Circumference of the circle * height

Area of the cylindrical part = pi * d * height

Area = 3.14 * 10 * 9

Area = 282.6

Lid

Area = pi * r^2

r = 5

Area = 3.14* 5^2 * 2

Area = <u> 157</u>

Total 439.6

I know this doesn't look right according to the diagram, but it is the only way that you can solve the question. That is, you must assume there are two lids, not one as the diagram suggests.

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What are the exact values of the six trigonometric functions for -7π/6 radians?

Artyom0805 [142]

Answer:

I would love to help you but I'm only in 7thhh

5 0

2 years ago

Please help as much as you can :)

pantera1 [17]

9514 1404 393

Answer:

(x, y) = (3, 7)

Step-by-step explanation:

If you divide the second equation by 2, it becomes ...

-x +2y = 11

Adding this to the first equation gives you the value of y:

(x -y) +(-x +2y) = (-4) +(11)

y = 7 . . . . . . . . simplify

The first equation can be rearranged to give an expression for x:

x = y -4

x = 7 -4 = 3

Then the solution is seen to be (x, y) = (3, 7).

Personally, I like a graphing calculator for a quick and easy solution to many linear systems. (If the solutions are non-integers, it may not be so helpful.)