Question

can someone please help only have 2 hours til deadline

Answer 1

I can help you with the second one cause the first one won't open...

Answer 2

ok thank you

Answer 3

1.a)\[A=a^2\] a=the side
\[A=18^2\]
So what is A?

Answer 4

i dont know i have that to but i don know where to go on from that

Answer 5

What is\[18\times18\]

Answer 6

\[18\times18=324\]

Answer 7

so a =324?

Answer 8

Yes.

Answer 9

ok thank you can you help me with any of the other questions

Answer 10

1.b)\[V = \frac{ bh }{ 3 }\]

Answer 11

\[Volume=\frac{ 20\times18 }{ 3 }\]

Answer 12

Volume=120

Answer 13

we have a right triangle so we can use our trig functions

Answer 14

also we have 1 side and 2 angles so we can easily find the 3rd angle

Answer 15

to find the missing angle we do \[\angle = 180 - 90 - 49 = 41 degrees\]

Answer 16

Using that angle we can find the height of the plank using the function \[Cos \theta = Adjacent/ Hypotenuse\]

Answer 17

\[Cos(41) = 3 / x\] From there we see our angle is 41 the adjacent side is the ground and the hypotenuse it the plank so now to find the side just solve for x

Answer 18

To find the wall, using the same angle we would use\[Tan \theta = Opposite/Adjacent\] Seeing as our angle is 41 the opposite side of that is the wall and the adjacent side is the ground we now have \[Tan(41) = x/3\] now you just solve for x

Answer 19

OK and then what

Answer 20

Once you solve for both of those X values you will have your answers