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klio [65]
2 years ago
12

Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AD = 4

Mathematics
1 answer:
Vinil7 [7]2 years ago
4 0

Answer:

BD = 6

Step-by-step explanation:

Theorem:  The altitude to the hypotenuse of a right triangle is the mean proportional between the segments of the hypotenuse.

So, \frac{4}{BD} = \frac{BD}{9}

BD^{2}  = 36

BD = 6

See how easy that is IF you know the theorem.

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A map has a scale of 1 cm : 9 km. If two cities are 2 centimeters apart on the map, what is the actual distance between the citi
Angelina_Jolie [31]

Answer:

18 kilometers

Step-by-step explanation:

If each 1 cm represents 9 kilometers.

How many would 2 cm represent?

x =  \frac{9 \times 2}{1}  = 9  \times 2 = 18

7 0
2 years ago
Evaluate the expression below.
o-na [289]

Answer:

<h2>A. 1</h2>

Step-by-step explanation:

Use:

|a| = a for a ≥ 0 or |a| = -a for a < 0

PEMDAS:

P Parentheses first

E Exponents

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

========================================

|8 - 7| · 4 + 3(-1)

= |1| · 4 - 3

= 1 · 4 - 3

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6 0
2 years ago
Read 2 more answers
F(x) = 6 (2 – 9), find f-1(x).<br> find the inverse
Tanzania [10]
Try using Symbolab!
4 0
3 years ago
Please help me solve this
Genrish500 [490]

Answer:

Solve what?

Step-by-step explanation:

You didn't put the question.

6 0
2 years ago
20. The perimeter of a square is 72 in. What is its area?
ivanzaharov [21]

The formula for perimeter is length + length + width + width

You know that all the sides of a square are equal to each other. That means that all the values in the perimeter formula should be the same. Therefore you can divide 72 by 4 (perimeter divided by the number of sides)

72 / 4 = 18

^^^Each side is 18 in

The formula for are is...

A = length x width

so...

18 * 18 = 324

324 in^2

Hope this helped!

~Just a girl in love with Shawn Mendes

6 0
3 years ago
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