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ratelena [41]
3 years ago
13

Help please thank you!! :)

Mathematics
1 answer:
tankabanditka [31]3 years ago
4 0

Answer:

Area of circle: 1662.57 cm

Circumference of circle: 144.57 cm

Step-by-step explanation:

Formula of area of circle:

pi x r2 or radius x radius

So, it's 22/7 x 23 x 23 = 1662.571429

Formula of circumference of circle:

2 x pi x radius OR

pi x diameter

Let's use the second method, to find diameter it is radius x 2 = 46

So,

46 x 22/7 = 144.5714286

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I neeed the answer now
natka813 [3]

Answer:

48 laps

Step-by-step explanation:

multiply 6 by 8 then that's your answer

4 0
3 years ago
Considering the expression x/2 + y2. Which statements are true?Mark all that apply.
Svet_ta [14]

Answer:

  D.  8/2 +(-10)² = 104

Step-by-step explanation:

To find which statements are true, evaluate the expression for the given variable values. You do this by putting the numbers in place of the respective variables, then doing the arithmetic.

The respective expression values are ...

  A 83 ≠ 37 . . . . (4/2) +9² = 2 +81 = 83

  B 31 ≠ 61

  C 52 ≠ 61

  D 104 =104 . . . . true statement

__

I find it less tedious to write a function into a calculator or spreadsheet and let it do the repetitive math. Examples of the calculation are shown above.

7 0
3 years ago
-2 (x + 3z) + 4x - 3y + 2z​
andriy [413]

Answer:

-2 (x + 3z) + 4x - 3y + 2z​

-2x-6x+4x-3y+2z

2x-4z-3y

hope it helps...

have a nice day!

6 0
3 years ago
Read 2 more answers
If two events a and b are independent and you know that p(a) = 0.65, what is the value of p(a | b)?
Ksivusya [100]
Let's think of an example which would better help visualize this situation. 

1) Someone exercises a lot so they can concentrate more on their homework (here running and concentration on homework are dependent events)

2) Someone exercises a lot because they wear a blue t-shirt (here, you can clearly see that wearing a blue shirt and exercising are not related. These events are independent).

Now concentrating on P(a | b) = Probability a occurred if b occurred. 

It does not matter if b occurred (just like it didn't matter that the person wore a blue shirt which meant that they exercised) for the outcome a to occur. 

Therefore, probability of P(a | b) = P(a) 

P(a | b) = 0.65 

Hope I helped :)  
5 0
3 years ago
F(x)=x^2-3x-2 is shifted 4 units right. The result is g(x). What is g(x)?
-BARSIC- [3]

Answer:

\boxed{\mathrm{C.}\:\: g(x)=(x-4)^2-3(x-4)-2}

Step-by-step explanation:

The function is shifted 4 units right.

The value of x in the function is subtracted from 4, because this is a horizontal translation.

f(x)=x^2-3x-2

g(x)=(x-4)^2-3(x-4)-2

8 0
3 years ago
Read 2 more answers
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