in triangle ABC, m ZA=55, m Z B=30, and a= 8. which equation should you solve to find b? PLEASE HELP IM BEING TIMED!!!!
1 answer:
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Answer:
A) (3, 12)
Step-by-step explanation:
For such a problem, I like to use a graphing calculator. It shows the answer quickly without a lot of fuss.
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If you want to solve this analytically, set the difference in y-values equal to zero and solve the resulting quadratic in the usual way. This will give the x-value at which the y-values are equal. (After we find x, we still need to find y.)
... y - y = 0
... x² -2x +9 -4x = 0
... x² -6x +9 = 0 . . . . . . collect terms. Recognize this as a perfect square.
... (x -3)² = 0
... x = 3 is the solution to this
... y = 4x = 4·3 = 12
The point on each of the given curves is (x, y) = (3, 12). The line is tangent to the parabola there, so there is only one point of intersection.
Answer:
Option D is the correct option
Step-by-step explanation:
⇒ { w ÷ 1 = w , So, I wrote 8 × w }
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Apply cross product property
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Move 15w to left hand side and change it's sign
Similarly, Move 35 to right hand side and change it's sign
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Collect like terms
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Divide both sides of the equation by -7
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Calculate
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Hope I helped!
Best regards!!