A circle has a diameter of 12 cm. Which of these is closest to its circumference?*

Mathematics

2 answers:

Neko [114]3 years ago

8 0

Answer:

Step-by-step explanation:

the exact answer would be 37.7, so it's rounded to 38.

tino4ka555 [31]3 years ago

4 0

Answer:D 19 cm

Step-by-step explanation:

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sineoko [7]

9514 1404 393

Answer:

(a) M = 0.25n +100

Step-by-step explanation:

The distance between the dots on the graph is a rise of 1 grid square and a run of 2 grid squares. If we extend the sequence of dots to the left, we expect to place one at (0, 100). That is, the y-intercept of this function is 100 (eliminates choices C and D).

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Then the equation describing the points on the graph will be ...

M = 0.25n +100

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WITCHER [35]

Answer:

15.98

Step-by-step explanation:

∑₁¹⁰ $8(\frac{1}{4} )^{n-1}$

$=8[1+\frac{1}{4} +\frac{1}{16} + ........ +t_{10}]$

We have to use the formula of sum of a G.P. series with common ratio r < 1.

If the first term is a, the common ratio is r and the number of terms is n then the sum [a + ar + ar² + ar³ + ......... up to n terms] is given by

$[a \times\frac{1-r^{n} }{1-r}]$