Answer:
38°
Step-by-step explanation:
Using the Cosine rule in Δ ABC
cos A =
where a, b and c are the sides of the triangle.
Here a = 5, b = 3 and c = 7 , thus
cos A = =
=
, thus
∠ A = (
) ≈ 38°
For for every ten sheets of stickers you buy at a craft store the total cost increases $20.50
1 answer:
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<h3>Answer: Choice C</h3>
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Explanation:
For choice C, the x values are out of order, so it might be tricky at first. I recommend sorting the x values from smallest to largest to get -2, -1, 0, 1, 2. Do the same for the y values as well. Make sure the correct y values stay with their x value pairs. You should get the list of y values to be 4, 2, 1, 1/2, 1/4
Check out the attached image below for the sorted table I'm referring to
We can see the list of y values is going down as x increases. This is a good sign we have decay. Further proof is that we multiply each term by 1/2 to get the next one
4 times 1/2 = 2
2 times 1/2 = 1
1 times 1/2 = 1/2
1/2 times 1/2 = 1/4
and so on. Effectively we can say the decay rate is 50%