3 years ago

What needs to happen before you can use the reason CPCTC

1 answer:

8 0

You need to determine whether the triangles are congruent by ASA, SSS, SAS, AAS or HL. Then you can say that the triangles are congruent; after that, you need to go back to what the were asking you to prove, for example, if they were asking you to confirm that AC and GD were congruent, state that they are congruent and then put CPCTC as a reason. Am I making sense?

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Consider the following sine regression model y =18.614 sin(0.521x - 1.984) + 76.900. Predict y(14). I know the answer. Will mark

rosijanka [135]

Answer:

61.512

Step-by-step explanation:

Put 14 where x is and do the arithmetic. Arguments for trig functions are always radians unless otherwise specified.

y =18.614 sin(0.521x - 1.984) + 76.900

y =18.614 sin(0.521·14 - 1.984) + 76.900 = 18.614sin(5.31) +76.900

y ≈ 18.614·(-0.82668) +76.900 = -15.388 +76.900

y ≈ 61.512

The regression model predicts y(14) = 61.512.