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Bezzdna [24]
3 years ago
15

Solve for x.

Mathematics
2 answers:
Masteriza [31]3 years ago
6 0

Answer:

5.4

Step-by-step explanation:

ryzh [129]3 years ago
4 0
To answer, we first divide both sides of the equation by -2.3 giving us a new equation which is,
                                  x - 1.2 = 4.2
Then, we add 1.2 to both sides of the equation,
                        (x - 1.2) + 1.2 = 4.2 + 1.2
                                         x = 5.4
The value of x is 5.4. 
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Answer:

Yi Xing invented the astronomical clock and introduced some new methods of interpolation in mathematics.

Step-by-step explanation:

Yi Xing was both an astronomer and a mathematician during the era. He invented the astronomical clock which was more accurate than the initial water and Sun's clock in use.

Furthermore, Yi Xing also discovered some new methods of interpolation in mathematics of which the meaning and interpretation became controversial. Interpolation is a method majorly in mathematics that can be used to estimate a value of a function from its discrete values. It involves first order differences and second order differences.

Also, Yi Xing was able to design a calendar in A.D. 727.

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4 years ago
Need help with this !!!!!!
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Step-by-step explanation:

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3 years ago
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3 0
3 years ago
Find the length of the radius of the circle whose perimeter is xcm and the area is
Jobisdone [24]

\bf \stackrel{\textit{perimeter}}{\textit{circumference}}\textit{ of a circle}\\\\ C = 2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=x \end{cases}\implies x = 2\pi r\implies \boxed{\cfrac{x}{2\pi }=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ A=x \end{cases}\implies x = \pi \left( \boxed{\cfrac{x}{2\pi }} \right)^2\implies x = \pi \cdot \cfrac{x^2}{2^2\pi^2}

\bf x = \cfrac{x^2}{4\pi }\implies 4\pi x = x^2\implies \cfrac{4\pi x}{x}=x\implies \blacktriangleright 4\pi = x\blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{since the radius is}}{r = \cfrac{x}{2\pi }}\implies r =\cfrac{4\pi }{2\pi }\implies \blacktriangleright r = 2\blacktriangleleft

6 0
4 years ago
Read 2 more answers
A roll of ribbon is used to tie 12 gifts which will be given to teachers on Teacher's
Wewaii [24]

Answer:

22.2m

Step-by-step explanation:

1 roll to 12 gifts

one gifts uses 1,85m of ribbon

1,85m is the length

12 × 1.85 = 22.2m

3 0
3 years ago
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