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photoshop1234 [79]

3 years ago

5

A guide wire of length 108 meters runs from the top of an antenna to the ground. If the angle of elevation to the top of the ant

enna is 42.3 degrees, then what is the height of the antenna

1 answer:

netineya [11]3 years ago

5 0

Answer: Approximately 72.69 meters

Step-by-step explanation:

Antenna height = h

$sin(42.3)=\frac{opposite}{hypotenuse} =\frac{h}{108} \\\\108*sin(42.3)=h\\\\h=72.685$

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Step-by-step explanation:

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3 years ago

Korey runs every 3rd day and swims every 4th day. If he runs and swims today, how many days will it be before Korey runs and swi

hichkok12 [17]

Answer: 12 days

Step-by-step explanation:

Based on the question, we have to list the multiples of 3 and 4. This will be:

3 = 3, 6, 9, 12, 15, 18, 21, 24, 27, 30

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The lowest common multiple is 12.

It will take 12 days before Korey runs and swims again on the same day.

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3 years ago

What is - 3/4 x (- 2/7) x 4/3? Explain your work

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A 15-foot ladder leans against a house. The bottom of the ladder is 7 feet from the house. To the nearest degree, what angle doe

max2010maxim [7]

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$Cos \alpha = \frac{adjacent.side}{hypotenuse}$
$Cos \alpha = \frac{7}{15}$
$\alpha =arcCos( \frac{7}{15} )$
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We can conclude that the ladder make with the ground a 62° angle.

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3 years ago