Answer:
Step-by-step explanation:
area of triangle =B*H/2
107.16=4.7*H/2
107.16*2=4.7*H
214.32/4.7=H
46.6=H
Sounds like you're more interested in being given answers than you are in receiving help and guidance towards finding your own answers.
I will give you one answer and ask you to find the other two.
First, rearrange the given data 3 2 6 4 5 3 4 2 7 5 3 in ascending order. Since you have 11 data points, merely choose the point in the exact middle (that is, the 6th point). That's your "median" for this data set.
Your turn: look up "mean" and share the definition you find. Do the same for "mode."
Supposing you sum up the 11 data points and divide that sum by 11. What would this give you? What's its name?
<span>3sinx+4cosx=5
=> 3/5 sinx +4/5 cosx = 1
let cosA=3/5 => sinA=4/5
=> cosAsinx + sinAcosx = 1
=> sin(x+A) = 1
Now,
4sinx - 3cosx
= 5(4/5sinx - 3/5 cosx) [multipying numerator and denominator by 5]
= 5(sinAsinx - cosAcosx)
= -5{cos(x+A)} = -5[root{1-(sin(x+A)^2)}] = -5 x 0 = 0 Ans 0
TRICK: if asinx+bcosx is given then multiply numerator and denominator by root(a^2 +b^2)
this method is useful in many questions </span>
Well think of it like this. lets say your teacher made you do this problem -48 - 10. I would just act like 48 is not an negative and add 10. After that I would put the negative back. So the answer would be -58. :P
