Answer:
A) a>1
Step-by-step explanation:
2(a +8) >18
2a +16 >18
2a>18 - 16
2a>2
a>2:2
a>1
Answer:
first blank- 2 second blank- 3 1/2 or 4 may be 3 too
Step-by-step explanation:
well when you look at the shape you can go from a to b and count the blocks which it would be 2
and you would want to do the same thing with C,D
Answer:
4.2 is your answer rounded to the nearest tenth.
Step-by-step explanation:
8/17 is equal to 0.470588235294.
In order to make an equivalent fraction with 9 as the denominator, divide 9 by 17 to get 0.529411764705.
Then, multiply 0.529411764705 by 8 to get 4.235294117647.
4.235294117647 is our <em>u</em><em>.</em>
Simplified to the nearest tenth it is 4.2.
we can double check our answer by taking 4.235294117647 divided by 9. You should get 0.470588235294.
Hope this helps!
Answer: sin u = -5/13 and cos v = -15/17
Step-by-step explanation:
The nice thing about trig, a little information goes a long way. That’s because there is a lot of geometry and structure in the subject. If I have sin u = opp/hyp, then I know opp is the opposite side from u, and the hypotenuse is hyp, and the adjacent side must fit the Pythagorean equation opp^2 + adj^2 = hyp^2.
So for u: (-5)^2 + adj^2 = 13^2, so with what you gave us (Quad 3),
==> adj of u = -12 therefore cos u = -12/13
Same argument for v: adj = -15,
opp^2 + (-15)^2 = 17^2 ==> opp = -8 therefore sin v = -8/17
The cosine rule for cos (u + v) = (cos u)(cos v) - (sin u)(sin v) and now we substitute: cos (u + v) = (-12/13)(-15/17) - (-5/13)(-8/17)
I am too lazy to do the remaining arithmetic, but I think we have created a way to approach all of the similar problems.
