3 years ago

BRAINLIEST!!!! Please say yes or no for number 13 and explain why. +15 points

Mathematics

1 answer:

WINSTONCH [101]3 years ago

8 0

Answer:

yes (answer in the comments) U^U

Step-by-step explanation:

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Given:

oksian1 [2.3K]

Answer:

9 units

Step-by-step explanation:

By the midsegment theorem,

$AB=\dfrac{KN+LM}{2}$

Since the ratio $LM:KN=1:5,$ then $LM=x,\ KN=5x$ and

$18=\dfrac{x+5x}{2}\\ \\18=\dfrac{6x}{2}\\ \\18=3x\\ \\x=6\\ \\LM=6\ units\\ \\KN=30\ units$

Draw two heights LE and MF. Quadrilateral ELMF is a rectangle, then EF = LM = 6 units.

Trapezoid KLMN is isosceles trapezoid (KL = MN), then KE = FN and

$KE=FN=\dfrac{KN-EF}{2}=\dfrac{30-6}{2}=12\ units$

Consider right triangle KLE. By the Pythagorean theorem,

$KL^2=LE^2+KE^2\\ \\15^2=LE^2+12^2\\ \\LE^2=15^2-12^2\\ \\LE^2=225-144=81\\ \\LE=9\ units$

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In ΔRST, the measure of ∠T=90°, RS = 90 feet, and TR = 76 feet. Find the measure of ∠S to the nearest tenth of a degree.

Rama09 [41]

Answer:

57.6

Step-by-step explanation:

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What is the formula for a trapezium

aleksklad [387]

A= (a+b/2) × h

Is the formula for a trapezoid

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Black_prince [1.1K]

Answer:150

Step-by-step explanation:50 + 100=150 150 - 300=150

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Step-by-step explanation:

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