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3 years ago

What is pi? I need help with this lol, first to answer gets brainliest

Mathematics

1 answer:

Alla [95]3 years ago

6 0

Answer:

✓ What is pi?

The number π is a mathematical constant. It is defined as the ratio of a circle's circumference to its diameter, and it also has various equivalent definitions. It appears in many formulas in all areas of mathematics and physics. It is approximately equal to 3.14159.

Being an irrational number, π cannot be expressed as a common fraction, although fractions such as 22/7 are commonly used to approximate it. Equivalently, its decimal representation never ends and never settles into a permanently repeating pattern. Its decimal (or other base) digits appear to be randomly distributed, and are conjectured to satisfy a specific kind of statistical randomness.

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Please help with this Circle Geometry question??

user100 [1]

(i) XYZ = 180 - 64
= 116 degrees
Opposite angles in a cyclic quadrilateral add up to 180 degrees

(ii) YXZ = 23 degrees
Alternate angles in a segment are the same

(iii) OXZ = 26
XOZ = 64 x 2
= 128 degrees
The the angle at the centre is double the angle at the circumference.
180 - 128 = 52
OXZ = 52/2
= 26
Triangle OZX is an isosceles triangle

(Don't forget to include the reasons above full marks)

3 0

3 years ago

The sequence an = one third (3)n - 1 is graphed below: Find the average rate of change between n = 3 and n = 4.

defon

$\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ f(x_2)}}-{{ f(x_1)}}}{{{ x_2}}-{{ x_1}}}\impliedby 
\begin{array}{llll}
average\ rate\\
of\ change
\end{array}
\\\\\\
\begin{cases}
x_1=3\\
x_2=4
\end{cases}\implies \cfrac{f(4)-f(3)}{4-3}\implies \cfrac{9-3}{4-3}\implies \cfrac{6}{1}\implies 6$

8 0

3 years ago

Find x.<br> a. 30.9<br> b. 34.4<br> c. 17.1<br> d. 15.4

Naya [18.7K]

Answer:

x = 17.1

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

cos theta = adj / hyp

cos 42 = x/23

23 cos 42 = x

17.09233 =x

Rounding to 1 decimal place

x =17.1

3 0

3 years ago

Sasha has an appointment at the hair salon and needs to stop at the ATM on her way there to get money for the service. Sasha kno

sdas [7]

Yes because $56 + 6.25% = 56.0625
And 15% of 56.0625 is 8.409375
So, 56.0625 + 8.409375 = $64.471875 making the total right under $65.

8 0

3 years ago

Select the correct answer.

Solnce55 [7]

Answer:

Step-by-step explanation:

8x=-15+12

8x=-3

x=-3/8 =-0.375

7 0

3 years ago

Read 2 more answers