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Firlakuza [10]
3 years ago
7

Find the value of x.

Mathematics
2 answers:
Xelga [282]3 years ago
6 0

Step-by-step explanation:

sum of all interior angles of hexagon=720°

(x+70)°+x°+(2x)°+(2x)°+(2x-10)°+(x+30)°=720°

9x+90=720°

9x=720-90

9x=630

x=70

vekshin13 years ago
4 0

Answer:

x = 70

Step-by-step explanation:

The sum of the internal angles of a polygon is (n-2)*180.  This figure has 6 sides, so the sum of its internal angles is720, so...

x + 2x + 2x + (2x - 10) + (x+30) + (x+70) = 720 simplifies to

x + 2x + 2x + 2x - 10 + x + 30 + x + 70 = 720  gather like terms

9x + 90 = 720, subtract 90 to both sides

9x = 630, divide by 9, get

x = 70

Check the answer

70 + 2*70 + 2*70 +2*70-10 +70+30 + 70+70 is

70 + 140 + 140 + 130 + 100 + 140 or

210 + 270 + 240 or

480 + 240 = 720, check

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The correct graph is the last one
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3 years ago
It is known that 1.4&lt; square root of 2 &lt;1.5. Find all possible values of the expression 2-square root of 2. How do I find
horsena [70]

Answer:

0.5<2-√2<0.6

Step-by-step explanation:

The original inequality states that 1.4<√2<1.5

For the second inequality, you can think of 2-√2 as 2+(-√2).

Because of the "properties of inequalities", we know that when a positive inequality is being turned into a negative, the numbers need to swap and become negative. So, the original inequality becomes -1.5<-√2<-1.4. (Notice how the √2 becomes negative, too). This makes sense because -1.5 is less than -1.4.

Using our new inequality, we can solve the problem. Instead of 2+(-√2), we are going to switch "-√2" with both possibilities of -1.5 and -1.6. For -1.5, we would get 2+(-1.5), or 0.5. For -1.4, we would get 2+(-1.4), or 0.6.

Now, we insert the new numbers into the equation _<2-√2<_. The 0.5 would take the original equation's "1.4" place, and 0.6 would take 1.5's. In the end, you'd get 0.5<2-√2<0.6. All possible values of 2-√2 would be between 0.5 and 0.6.

Hope this helped!

4 0
3 years ago
Three functions are given below: f(x), g(x), and h(x).
Rzqust [24]

Answer: The axis of symmetry is x=1.

Explanation:

The given function is,

g(x)=5x^2-10x+7

The degree of the equation is 2.  SInce it is a quadratic function therefore the graph of the function is a parabola.

The axis of symmetry of a parabolic function f(x)=ax^2+bx+c is a vertical line,

x=-\frac{b}{2a}

Since the value of a is 5m b is -10 and c is 7, So the axis of symmetry is,

x=-\frac{(-10)}{2(5)}

x=\frac{10}{10}

x=1

Therefore, the axis of symmetry is x=1.

5 0
3 years ago
if your bicycle tire has a diameter of 9 inches. how many rotations does each tire make if you travel 300 feet?
Vesnalui [34]
Step One
Calculate the number of feet traveled in 1 rotation.

Formula
C = π*d
P = 3.14
d = 9 inches = 9/12 feet = 3/4 of a foot.

C = 3.14 * 3/4 = 2.355 So that means that every time the tire turns around 1 complete turn, the distance traveled on the ground is 2.355 feet.
 
Step Two
Figure out the number of revolutions.
1 revolution = 2.355 feet
x revolutions = 300 feet.

1/x = 2.355/ 300  Cross multiply
2.355 feet * x = 1 rev * 300 feet
2.355 x = 300 rev Divide by 2.355
x = 300 / 2.355 
x = 127.39 revolutions. <<<< Answer

8 0
3 years ago
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Alchen [17]

Answer:

no

Step-by-step explanation:

5 0
4 years ago
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