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Anestetic [448]
3 years ago
13

I need help with question #2

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
7 0
That is so confusing the way theyou word it sometimes is like what the...what?
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How do you find the sine, cosine, and tangent values on the unit circle not in the first quadrant? Provide an example, and how y
gizmo_the_mogwai [7]
A point (-0.8, 0.6) will be a point on the unit circle in the second quadrant. Since it is a unit circle, its radius is 1, and we have
  sin(α) = y = 0.6
  cos(α) = x = -0.8
  tan(α) = y/x = 0.6/-0.8 = -0.75

The angle is α = arccos(-0.8) ≈ 143.13°

______
For the unit circle, the trig values are always the coordinates or their ratio as shown above, regardless of quadrant.
7 0
3 years ago
can someone please explain to me how to answer this question and also the equation to find the answer
Leona [35]
If #peaches = x and #plums = y we can write the following equations:

x+y=15
0.89x + 0.39y = 8.85

and x and y are whole numbers.

converting the first to x=15-y and plugging it into the second, you get

0.89(15-y) + 0.39y = 8.85 =>
13.35 - 0.89y + 0.39y = 8.85 =>
4.5 = 0.5y =>
y = 9

so x = 15-9 = 6

She bought 9 plums and 6 peaches.


6 0
3 years ago
At Best Buy they have a stereo system that sells for $2200 and is on sale for 15% and sales tax is 7%. What is the final cost?
-BARSIC- [3]
2200(.15)=330.00
2200+330=2530
2530(.07)=177.10
2530+177.30=2707.10
4 0
3 years ago
Find the area of the Shaded region below in all of the smaller squares are identical in size
Lelechka [254]

Area of the shaded region = 80 in²

Explanation:

The outer diagram is a square

Area of the square = length × length

length = 12in

Area of the square = 12in × 12in

Area of the square = 144in²

There are 3 smaller squares in each row and column:

The length in each row and colum = 12

the length o fone small box = 12/3 = 4

Area of the smaller box = 4in × 4in = 16 in²

There are 4 boxes unshaded

Area of 4 unshaded boxes = 4 × 16 in² = 64in²

Area of the shaded region = Area of the outer box - area of the unshaded boxes

Area of the shaded region = 144 - 64

Area of the shaded region = 80 in²

7 0
1 year ago
What is 3/4 of 1/2?________
BartSMP [9]

Answer:

0.375

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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