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OlgaM077 [116]
3 years ago
9

How to find area of a circle.

Mathematics
1 answer:
hjlf3 years ago
8 0

Answer:

A rea of a Circle = π × r²

Step-by-step explanation:

The area of a circle formula is A = π × r² where r is the radius.

Remember that the radius might not be given but the radius is half of the diameter.

For π use the calculator value or use 3.14.

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Simplify: -1/2(6n+4) +2n - 5
Maurinko [17]

Answer:

Step-by-step explanation:

\frac{-1}{2}(6n+4)+2n-5 \\\\\frac{-1}{2}2(3n+2)+2n-5\\ -(3n+2)+2n-5\\-3n-2+2n-5\\-n-7

5 0
3 years ago
Suppose that two cards are dealt from a standard 52-card poker deck. let a be the event that the sum of the two cards is 8 (assu
nirvana33 [79]
Case 1:  You have an Ace and a seven. 
There are 4 ways to pick 1 Ace out of 4. There are 4 ways to pick 1 seven out of 4.   -----> 4*4 = 16
There are 16 ways to be dealt an Ace and a seven.

Case 2:  You have a two and a six.
In the same way there are 4*4=16 ways to be dealt a two and a six.

Case 3: You have a three and a five.
In the same way there are 4*4=16 ways to be dealt a three and a five.

Case 4: You have 2 fours.
There are 6 ways to get 2 fours out of 4.  (4 choose 2)

Total number of outcomes = 16+16+16+6 = 54
8 0
3 years ago
What is -1 2/3 . (-5 1/4)
Volgvan

Answer:

105/12 Simplified: 35/4=8.75

Step-by-step explanation:

-1 2/3 =-5/3

-5 1/4- -21/4

(-5/3)(-21/4)=105/12

5 0
3 years ago
Read 2 more answers
Determine the slope, y-intercept and equation of the graph below.
Aneli [31]

Answer:

Step-by-step explanation:

y intercept is 7.5

slope 1/2

y = 1/2x + 7.5

4 0
3 years ago
Tom wants to hang a mirror in his room. The mirror and frame must have an area of 14 square feet. The mirror is 3 feet wide and
Rudik [331]
The answer to the problem is as follows:

Let the width of frame be x ' 

( 4 +2x ) ( 3+2x) = 14 

12 + 6x +8x +4x^2 = 14 

4x^2 +14x -2 = 0 

<span>ANSWER is A)

I hope my answer has come to your help. God bless and have a nice day ahead!
</span>
6 0
4 years ago
Read 2 more answers
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