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Nastasia [14]
3 years ago
11

What is the value of x? Enter your answer in the box. x =

Mathematics
1 answer:
konstantin123 [22]3 years ago
5 0
To get the answer for this question is to: 

Divide 56 by 72 = 0.777777778 because 0.777777778 * 72 = 56 cm. 

Since 72 cm is related to the side length of 9 cm, take 0.777777778 and multiply it by 9 and you will get 7 for the missing side length. 

To get the value of X for the equation to equal 7, take the 7 you got for the missing side length and add it to 20 to get 27 (20 + 7 = 27). Then, take the 27 and divide it by the 3, and you will get 9 for X. 

Example: 
7 + 20 = 27 
27 / 3 = X 
9 = 9

&

3x - 20 
= 3(9) - 20 
= 27 - 20 
= 7 

The correct answer for the value of X is: 9 

Hope this helps! 

<em>~ ShadowXReaper069</em>
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-3(6-4x)-5(-x+8)= 4(2-5x )
loris [4]
You may express it as :

-18+24x+5x-40=8-20x
49x=56
x=56/49
5 0
3 years ago
A line passes through the two points: (1, 10) and (6,5).
Snowcat [4.5K]

Answer:

<em>(a). - 1 ; (b). y = - x + 11</em>

Step-by-step explanation:

(1, 10)

(6, 5)

<em>(a).</em> <em>m</em> = \frac{y_{2} -y_{1} }{x_{2} -x_{1} } = \frac{5-10}{6-1} = <em>- 1</em>

<em>(b).</em> y - 5 = - 1(x - 6)

<em>y = - x + 11</em>

5 0
3 years ago
4.
zubka84 [21]

Answer:

See Explanation Below

Step-by-step explanation:

Given

(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx.cos x.

Required

Prove

To start with; we open the bracket on the left hand side

(sin x - cos x)^2 = (sin x - cos x)(sin x - cos x)

(sin x - cos x)^2 = (sin x )(sin x - cos x)- (cos x)(sin x - cos x)

(sin x - cos x)^2 = sin^2 x -sinx cos x - sin xcos x + cos^2 x

(sin x - cos x)^2 = sin^2 x -2sinx cos x + cos^2 x

Reorder

(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x

From trigonometry;

sin^2x + cos^2x = 1

So;

(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x

becomes

(sin x - cos x)^2 = 1 - 2sinx cos x

Also from trigonometry;

sec^2x - tan^2x = 1

So,  

(sin x - cos x)^2 = 1 - 2sinx cos x

becomes

(sin x - cos x)^2 = sec^2x - tan^2x  - 2sinx cos x

Proved

3 0
3 years ago
Please someone explain to me how did we multiply the denominator in this
AleksandrR [38]

ok so what you wanna do is use multiplication

8 0
3 years ago
PLEASE HELP!!! PLEASE SHOW ALL OF YOUR WORK!!!
Elza [17]
The answer is c bc I just know
8 0
2 years ago
Read 2 more answers
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