Answer:
28
Step-by-step explanation:
42 ÷ 1 × 1/2
= 28
Explanation:
a. The line joining the midpoints of the parallel bases is perpendicular to both of them. It is the line of symmetry for the trapezoid. This means the angles and sides on one side of that line of symmetry are congruent to the corresponding angles and sides on the other side of the line. The diagonals are the same length.
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b. We observe that adjacent pairs of points have the same x-coordinate, so are on vertical lines, which have undefined slope. KN is a segment of the line x=1; LM is a segment of the line x=3. If the trapezoid is isosceles, the midpoints of these segments will be on a horizontal line. The midpoint of KN is at y=(3-2)/2 = 1/2. The midpoint of LM is at y=(1+0)/2 = 1/2. These points are on the same horizontal line, so the trapezoid <em>is isosceles</em>.
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c. We observed in part (b) that the parallel sides are KN and LM. The coordinate difference between K and L is (1, 3) -(3, 1) = (-2, 2). That is, segment KL is the hypotenuse of an isosceles right triangle with side lengths 2, so the lengths of KL and MN are both 2√2.
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For part (c), we used the shortcut that the hypotenuse of an isosceles right triangle is √2 times the leg length.
Answer:
I am truly sorry if any of these answers are incorrect, I am here to help and I will do my best!
Step-by-step explanation:
A clock that uses hands to tell time is less precise than a clock that uses numbers.
A signal stored on a vinyl record is less easily copied than a signal stored in a computer.
A signal that is continuously varying is less reliable than a signal with limited possible values.
A signal transmitted by the human voice loses more energy as it travels than a signal transmitted by a fiberoptic cable.
Hope this helps! :)
If so, Brainliest would be nice... But it is ok if not :)
Answer: 54
Step-by-step explanation:
3 times the square of -3 plus -5 times -3 plus 12
3 times 9 + 15 + 12
27+15+12=
54
My prediction would be 1,659 defective brakes. I hope this helps you