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kolezko [41]
3 years ago
6

The diameter of a circle is 7 m. find its area and perimeter.Answer fast!!!!!​

Mathematics
2 answers:
quester [9]3 years ago
3 0

Answer:

Area≈38.48m²

perimeter≈43.98

svetoff [14.1K]3 years ago
3 0
The Area is 38.48 and the Perimeter is 21.99
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Calculate using Cauchys integral formula
zhuklara [117]

Answer:

9πi/2

Step-by-step explanation:

\oint\limits_C {\frac{5z^{2}+4}{(z-1)(z+3)} } \, dz,\ C: |z|=2

Let f(z) = (5z² + 4) / (z + 3).

\oint\limits_C {\frac{f(z)}{z-1} } \, dz,\ C: |z|=2

Using Cauchy's integral formula:

2\pi i\ f(1)\\2\pi i\ (\frac{5(1)^{2}+4}{1+3}) \\2\pi i\ (\frac{9}{4}) \\\frac{9\pi i}{2}

5 0
3 years ago
At the movie theater Leon can buy 4 large popcorns or 2 large popcorns and 3 candy bars for the same price. If the candy bars co
AlexFokin [52]
4p = 2p + 3c....p = popcorn, c = candy bars
c = 6

4p = 2p + 3(6)
4p = 2p + 18
4p - 2p = 18
2p = 18
p = 18/2
p = 9......whoa....9 bucks for popcorn....nothing is cheap anymore
5 0
3 years ago
During a lab experiment, the temperature of a liquid changes from 625°F to 1034°F.
11111nata11111 [884]

Answer:

39.56%

Step-by-step explanation:

1. 1034-625=409

2. 409/1034= 0.39555126

3. 0.39555126x100= 39.555126

4. Round: 39.56%

7 0
2 years ago
Read 2 more answers
Evaluate 3^2 + (5-2) X 4 - 6/3
muminat

Answer:

The result is 19

Step-by-step explanation:

3^{2}  + (5-2)x4 - 6/3

Step 1: Parenthesizing (5-2)=3

3^{2}  + 3x4 - 6/3

Step 2: Exponentiation 3^{2}=9

9  + 3x4 - 6/3

Step 3: Multiplication and division 3x4=12 and 6/3=2

9  + 12 - 2

Step 4: Addition and subtraction 9+12=21, and 21-2=19

21-2

19

The operations are ordered from highest to lowest in the order:

1. Parenthesizing,

2. Factorial,

3. Exponentiation,

4. Multiplication and division,

5. Addition and subtraction.

Hope this helps!

6 0
3 years ago
Read 2 more answers
(8x 2 −15x)−(x 2 −27x)=ax 2 +bxleft parenthesis, 8, x, squared, minus, 15, x, right parenthesis, minus, left parenthesis, x, squ
quester [9]

Answer:

<h2>5</h2>

Step-by-step explanation:

Given the expression (8x² −15x)−(x² −27x) = ax² +bx, we are to determine the value of b-a. Before we determine the vwlue of b-a, we need to first calculate for the value of a and b from the given expression.

On expanding the left hand side of the expression we have;

= (8x² −15x)−(x² −27x)

Open the paranthesis

= 8x² −15x−x²+27x

collect the like terms

= 8x²−x²+27x −15x

=  7x²+12x

Comparing the resulting expression with ax²+bx

7x²+12x =  ax²+bx

7x² = ax²

a = 7

Also;

12x = bx

b =12

The value of b - a = 12 - 7

b -a = 5

Hence the value of b-a is equivalent to 5

3 0
3 years ago
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