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Lubov Fominskaja [6]
3 years ago
8

The radius of ⨀B is 4 centimeters and the circumference of ⨀A is 20π centimeters. Find CD

Mathematics
1 answer:
malfutka [58]3 years ago
8 0

Answer:

24

Step-by-step explanation:

If we're using CD as simply numbers and not references to their designated circles we can use the difference between A and B as a pattern

The circumference is 2 multiplied by pi by the radius. This would mean that A has a radius of 10.

The difference between A and B is 2 so we can assume that C is 6 and D is 4. 4×6=24.

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May someone help me get the right answer please
AleksandrR [38]
The answer is 24.5 by rounding off nearest tenth it becomes 25
PROCEDURE:
1: put all the numbers in numerical order i.e.22,23,24,24,25,26,28,29;
2:now the total amount of values is even, so the median will be the mean of two central values i.e. 
(24+25)/2=24.5
now by rounding it off to nearest tenth it becomes 25
3 0
3 years ago
What is 1472÷32 This is my question I’m going to ask you know help me
alisha [4.7K]

Answer:

46

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
If u help me your dreams will come true ya know
wariber [46]

Answer:

Area of larger circle = \pi *r^2=3.14(11^2)=379.94

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Probability that it lands in the shaded area (smaller circle):

28.26 ÷ 379.94 = 0.07438... = 0.07 (nearest hundredth)

8 0
3 years ago
Element X decays radioactively with a half life of 13 minutes. If there are 530 grams of Element X, how long, to the nearest ten
Leona [35]

Answer:

t \approx 50.4\,min

Step-by-step explanation:

The time constant of the element X is:

\tau = \frac{13\,min}{\ln 2}

\tau = 18.755\,min

The decay function has the following form:

\frac{m}{m_{o}} = e^{-\frac{t}{\tau} }

t = -\tau \cdot \ln \frac{m}{m_{o}}

t = -(13\,min)\cdot \ln \left(\frac{11\,g}{530\,g} \right)

t \approx 50.4\,min

6 0
3 years ago
Solve the following quadratic equation for all values of x in simplest form.<br> 5(x+10)^-30=-5
ira [324]

Answer:

Step-by-step explanation:

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