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frosja888 [35]
3 years ago
13

Find the value of X ​

Mathematics
2 answers:
Basile [38]3 years ago
4 0

x + 3x + 80 = 180 \\ 4x = 180 - 8 0 \\ 4x = 100  \\ x =  \frac{100}{4}  \\ x = 25 \:  \:  \:

sweet [91]3 years ago
3 0

The sum of all the angles of the triangle is 180°.

80 + 3x + x = 180°

80 + 4x = 180°

4x = 180 - 80

4x = 100

x = 100/ 4

x= 25

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1+1=<br> 2+2=<br> 3+3=<br> 4+4=<br> 5+5=
inysia [295]
1 + 1= 2

2 + 2 = 4

3 + 3 = 6

4 + 4 = 8

5 + 5 = 10
4 0
3 years ago
Read 2 more answers
Find the surface area of the cylinder to the nearest tenth. Use 3.14 for n
zaharov [31]
Remember: The formula for surface area for cylinders are S= 2πrh + 2πr²
 The 2πr² represents the circular parts of the cylinder. 

First, let's find the lateral side of the cylinder. 
→ 2 (3.14)(6)(15) = 565.2
Next, find the circular parts.
→ 2 (3.14)(6²)
→ 2 (3.14)(36) = 226.08
Add the two answers together.
→565.2 + 226.08 = 791.28
Round.
Your final answer is 791.3 in²
I hope this helps!

5 0
3 years ago
A billboard designer has decided that a sign should have 4-ft margins at the top and bottom and 1-ft margins on the left and rig
givi [52]

An equation is formed of two equal expressions. The value of x that maximizes the area of the printed region of the billboard is 9.655 ft.

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given x is the left-right width of the billboard and y is the height of the billboard. Therefore,

The total area of the billboard, A= x·y

The total printed area of the billboard, A_p=(x-2)(y-8)

Given in problem that the area of the billboard is 3600 ft².

x·y = 3600

y = (3600)/x

Substituting the value of y in the equation of the total printed area of the billboard,

A_p = (x-2)(\dfrac{3600}{x}-8)\\\\A_p = 3600 -8x -\dfrac{7200}{x} + 16\\\\A_p =3616-8x - \dfrac{7200}{x}

Now, the value of x is needed to be minimum, therefore, differentiating the given function,

\dfrac{d}{dx}A_p =\dfrac{d}{dx}3616-8x - \dfrac{7200}{x}\\\\\dfrac{d}{dx}A_p =-8 - \dfrac{7200}{x^2}

Equate the differentiated function with 0,

0=-8x - \dfrac{7200}{x^2}\\\\8x = - \dfrac{7200}{x^2}\\\\x^3 = 900\\\\x = 9.655 ft.

Hence, the value of x that maximizes the area of the printed region of the billboard is 9.655 ft.

Learn more about Equation:

brainly.com/question/2263981

#SPJ1

4 0
2 years ago
4x2 + 8x – 9 = 0 complet the square
lisov135 [29]
The answer is 1/8. That is the answer for this question.
6 0
3 years ago
A bicycle Rocco wants to buy is $282. If the sales tax rate is 4% of the total price how much sales tax will Rocco pay?
attashe74 [19]

Answer:

11.28

Step-by-step explanation:

282×4%=11.28 for sales tax

282+11.28= 293.28 would be total for bike and sales tax

3 0
3 years ago
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