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gayaneshka [121]
2 years ago
11

Find the missing length indicated A) 25 B) 5 C) 8 D) 3

Mathematics
1 answer:
Nonamiya [84]2 years ago
3 0

Given:

The figure of a triangle.

To find:

The missing length.

Solution:

Let x be the missing length.

Basic proportionality theorem(BPT): According to this theorem, if a line is parallel to the one side of a triangle then that the line intersects the other two sides of the triangle in the same ratio.

Using Basic proportionality theorem, we get

\dfrac{6}{8-6}=\dfrac{12-x}{x}

\dfrac{6}{2}=\dfrac{12-x}{x}

3=\dfrac{12-x}{x}

3x=12-x

Adding x on both sides, we get

3x+x=12

4x=12

x=\dfrac{12}{4}

x=3

The missing length is 3 Therefore, the correct option is D.

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"eight times the difference of a number and three is sixty-four"?
morpeh [17]

Answer:

the number would be 11

Step-by-step explanation:

8    ·    x - 3       =      64

________                 _          (divide both sides by 8)

8                                 8

x - 3  =   8

+ 3         + 3

x  = 11

(check:

11 - 3 = 8

8 x 8 = 64 )

5 0
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2 years ago
Antonio is going to the carnival. He can spend no more than $20.00. if the ticket to in is $7.50, and each ride cost $1.25, how
fgiga [73]
$20.00 ≥ 7.50+1.25x
subtract 7.50 from both sides
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6 0
3 years ago
How do I do this ? I don’t understand logarithm
ale4655 [162]

Hello from MrBillDoesMath!

Answer:

x = 19

Discussion:

Both sides are logarithms to the same base, namely 20 , which implies the expressions in x (what we are taking logarithms of) must be equal. So we need to solve

4x - 10 = 3x + 9              => subtract 3x from both sides

4x-3x - 10 = 9                 => add 10 to both sides

x = 9 + 10 = 19

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8 0
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1.<br> 15% of what number is 45?
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Answer:

15% of 300 is 45

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