The price of a technology stock was $9.77 yesterday. Today, the price fell to $9.70 . Find the percentage decrease. Round your a
1 answer:
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Would it help if you wrote it as
?
Then you can cross multiply if you know how to do that.
1*x = (-11)(-3)
x = 33 but what happened to the 2 minus signs?
Remember that a ( - ) times a ( - ) = a plus. The two minus signs become a plus.
Answer:
x ≈ 2879.4 m
Step-by-step explanation:
Measure of ∠DAC = 10°
Measure of ∠DAB = 90°
Measure of ∠BAC = 90° - 10° = 80°
By applying cosine rule in ΔABC,
cos(80°) =
=
0.17365 =
x =
x = 2879.36
x ≈ 2879.4 m
