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Gelneren [198K]
3 years ago
7

20 points repost because no one answered. Geomertry question

Mathematics
2 answers:
aniked [119]3 years ago
7 0

Answer:

x=2.25

Step-by-step explanation:

ΔABC and ΔADE are similar.

∴ sides are proportional.

\frac{5}{1} =\frac{x+9}{x} \\5=\frac{x}{x} +\frac{9}{x} \\5=1+\frac{9}{x}\\\frac{9}{x}=5-1\\\frac{9}{x}=4\\x=\frac{9}{4}=2.25

Ira Lisetskai [31]3 years ago
4 0

Answer:

x = 9/4

Step-by-step explanation:

We know that the triangles are similar

We can use ratios to solve

x          x+9

----- = ----------------

1            5

Using cross products

5x = 1(x+9)

5x = x+9

Subtract x

5x-x = x+9-x

4x= 9

Divide by 4

4x/4 = 9/4

x = 9/4

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C, Leilani is the fastest.

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3 years ago
What does it mean if the hundred digit of my number is less than tens digit. The ones digit is greater than the tens digit. What
leonid [27]
Every number consists of digits which have their own value. If the number consists of 3 digits, then the rightmost digit is for ones, middle digit is for tens and leftmost digit is for hundreds (it goes on and on with more-than-3-digit-numbers). About your task:

Hundred digit is smaller than tens digit and tens digit is smaller than ones digit. It means that the leftmost digit is the lowest, the rightmost digit is the greatest and the middle digit is a value between both of them.

For example:

123, 258, 346, 789, 278, 568 etc. etc.


3 0
3 years ago
In65 - lnX = 39<br> What does X=?
Hunter-Best [27]

Answer:

<h2>The answer is 7.47</h2>

Step-by-step explanation:

In this problem we are going find the natural logarithmic of the numbers involved and solve for x

ln65-Ln x= 39\\

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<h3> ln 65= 4.17</h3>

4.17-ln x= 39\4.17-39= lnx\\-34.83=lnx\\

taking the exponents of both sides we have

e^-^3^4^.^8^3= x\\x= 7.47

3 0
3 years ago
The width of a rectangle measures (3c-9d)(3c−9d) centimeters, and its length measures (8c-2d)(8c−2d) centimeters. Which expressi
Vsevolod [243]

The expression for the perimeter of the rectangle is 2(11c - 11d)

Perimeter of a rectangle = 2(length + width)

Length = 3c - 9d

Length = 3c - 9d Width = 8c - 2d

The expression for the perimeter can be expressed thus :

2(3c - 9d + 8c - 2d)

Collect like terms :

2(3c + 8c - 9d - 2d)

2(11c - 11d)

Hence, the expression for the perimeter of the rectangle is 2(11c - 11d)

Learn more : brainly.com/question/2142493?referrer=searchResults

3 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=5%5E%7B-2%7D" id="TexFormula1" title="5^{-2}" alt="5^{-2}" align="absmiddle" class="latex-form
nirvana33 [79]

Answer:

0.08

Step-by-step explanation:

5^-2 is equal to 1/25 or 0.04.

Cube root of 8 is 2.

3 0
2 years ago
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