Mathematics, 23.01.2021 02:50, Bradgarner772
Triangle D E F is shown. Angle D E F is 140 degrees. The length of D E is 11, the length of E F is 9, and the length of D F is e.
In ΔDEF, DE = 11, EF = 9, and angle E = 140°.
Which equation correctly uses the law of cosines to solve for the third side?
e2 = 112 + 92 − 2(11)(9)cos(140°)
112 = e2 + 92 − 2e(9)cos(140°)
92 = e2 + 112 − 2e(11)cos(140°)
e = 11 + 9 − 2(11)(9)cos(140°)
Answers: 3
Mathematics, 21.06.2019 19:00, michellectucker1982
What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )
Answers: 1
Mathematics, 21.06.2019 19:30, danielahchf
Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x
Answers: 2
Triangle D E F is shown. Angle D E F is 140 degrees. The length of D E is 11, the length of E F is 9...
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