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Orlov [11]
3 years ago
12

4.) Find the area of the rectangle. 9 ft. 1 23 ft.​

Mathematics
1 answer:
Zolol [24]3 years ago
8 0

Answer:

1107 Ft squared

Step-by-step explanation:

The formula for a triangle is base times height, so multiply the base times the height.

23 x 123 = 1107

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stealth61 [152]
Notice the picture below
the AD line is a bisector, cutting the 36 degrees A in half,
18 and 18 degrees each half

notice the tickmarks, the triangle is an isosceles,
if those two sides are equal, so are the angles they make
down below with the base

now, the base is 8, AD is bisecting that too, to 4 and 4

now, using the Law of Sines

\bf \textit{Law of sines}
\\ \quad \\
\cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c}\\\\
----------------------------\\\\
\cfrac{sin(18^o)}{4}=\cfrac{sin(72^o)}{\overline{AD}}\implies \overline{AD}=\cfrac{4\cdot sin(72^o)}{sin(18^o)}

keep in mind, the angles are in degrees, so, when taking the sines, make sure your calculator is in Degree mode

4 0
3 years ago
Three less than 2 times a number is 55. What is the number?
-Dominant- [34]
Let the number be x.

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6 0
3 years ago
True or false
valina [46]
False because a number is rational if we can write it as a fraction where the top number of and bottom number are both whole numbers but irrational numbers is any number that is not rational. It is a number that cannot be written as a ratio of two integers(or cannot be expressed as a fraction)
3 0
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Which one is correct? Please hurry...the audio is just reading the question.
Darina [25.2K]

Answer:

n = 18

Step-by-step explanation:

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n = 324/18

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