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weqwewe [10]
3 years ago
9

Solve the following equation. Only enter the numeric answer (no variables). 30=2.5(10-2x)

Mathematics
2 answers:
yKpoI14uk [10]3 years ago
7 0

Answer:

x = -1

Step-by-step explanation:

30 = 2.5(10)(-2x)  - you multiply by each

30 = 25 - 5x        - then pass 25 to the other side and subract

5x = - 5x               - then divide 5 / -5

x = -1                     - and you have the answer

dlinn [17]3 years ago
5 0

Answer:

x= -1

Step-by-step explanation:

distribute 2.5 through the parenthese

30=25-5x

move variable to the left hand side an change its sign

5x+30 =25

move constant to the right hand side and change the sign

5x=25 -30

calculate the difference

5x= -5

divide both sides of the equation by 5

x= -1

Hope this helps!!! I would really appreciate a brainliest???

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The measurement of the angle subtended by an arc with a length of 5/2 pi meters is 149.542°

Step-by-step explanation:

Here, the diameter of the circle = 6 m

Diameter = 2 x RADIUS

So, radius  = D / 2  = 6 / 2  = 3 m

Also, the length of the arc = ( \frac{5}{2}  \pi) meters

Putting π  = 3.14, we get  

The length S of the arc = \frac{5}{2}  \times (3.14)  =  7.85  

or, S  = 7.85 m

Let us assume the arc subtends angle Ф at the center of the circle.

⇒  S  = r Ф

or, Ф = \frac{S}{r}   = \frac{7.85}{3}  =  2.61

⇒Ф  = 2.61 radians

Now, 1 Radian  = 57.2958 Degrees

⇒ 2. 62 Radian  = 2.61  x  ( 57.2958 Degrees)  =  149.542 °

or, Ф    =  149.542°

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Step-by-step explanation:

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evablogger [386]

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Step-by-step explanation:

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For your simplified expression, you get

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