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Flura [38]
3 years ago
12

A company uses a computer program to create coupon codes for customers to use on its website. The codes are made up from the sym

bols !, #, &, and *, as well as any letter from the alphabet.
The company uses the program to make a code, one character at a time.

What is the probability the first character is a symbol?

Enter your answer as a decimal rounded to the nearest hundredth in the box.
Mathematics
2 answers:
Readme [11.4K]3 years ago
8 0

Hope This Helps!!!

Hope This Helps!!!Have a great day!!!

jek_recluse [69]3 years ago
3 0

Answer:

total = 26 + 4 = 30 \\ probability =  \frac{4}{30}  \\  = 0.13

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It looks difficult but it’s pretty easy. Just use the Ln function to bring down the powers then simplify.
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A regulat pentagon has side lenghts of 5.8cm and apothem of 4cm. calculate its perimeter and area​
Kryger [21]

PENTA = 5.

a regular polygon has all equal sides, so if one side is 5.8, all are, so the perimeter for this pentagon with 5 sides is 5.8 + 5.8 + 5.8 + 5.8 + 5.8 = 29.

\bf \textit{area of a regular polygon}\\\\ A=\cfrac{1}{2}ap~~ \begin{cases} p=perimeter\\ a=apothem\\ \cline{1-1} p=29\\ a=4 \end{cases}\implies A=\cfrac{1}{2}(4)(29)\implies A=58

6 0
3 years ago
Express the mixed number 6 3/8 as a improper fraction? please show work.
Mkey [24]

6 3/8

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51/8

Answer: 51/8

6 0
4 years ago
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KATRIN_1 [288]
The equation of the line is y = 2x + 1

4 0
3 years ago
And wins a metal in the shape of a circle for finishing a marathon which statements about the metals are true use 3.14 for pi. S
PilotLPTM [1.2K]

Answer:

The true statements are:

C. If the metal has a radius of 2.5 inches then it has an area of 19.625 in.²

D. If the metal has a diameter of 3 inches and it has a circumference of 9.42 inches.

E. If the metal has a circumference of four pi inches then it has an area of four pi square inches

Step-by-step explanation:

Let us revise the rule of circumference and area of a circle

  • The formula of the circumference of a circle is <em>C = π d</em>, where d is the diameter of the circle OR <em>C = 2πr</em>, where r is the radius of the circle
  • The formula of the area of a circle is <em>A = πr²</em>
  • The radius of a circle is equal to half its diameter

A.

∵ The metal has a circumference of 7π inches

∵ C = 2πr

- Equate πd by 7π

∴ πd = 7π

- Divide both sides by π

∴ d = 7 inches not 3.5 inches

∴ A is not true

B.

∵ The metal has a circumference of 3π inches

∵ C = 2πr

- Equate 2πr by 3π

∴ 2πr = 3π

- Divide both sides by π

∴ 2r = 3

- Divide both sides by 2

∴ r = 1.5 inches

∵ A = πr²

∴ A = π(1.5)²

∴ A = 2.25π inches² not 9π inches²

∴ B is not true

C.

∵ The metal has a radius of 2.5 inches

∴ r = 2.5

∵ A = πr²

∵ π = 3.14

∴ A = 3.14(2.5)²

∴ A = 19.625 inches²

∴ If the metal has a radius of 2.5 inches, then its area is 19.625 in.²

∴ C is true

D.

∵ The metal has a diameter of 3 inches

∴ d = 3

∵ C = πd

∵ π = 3.14

∴ C = 3.14(3)

∴ C = 9.42 inches

∴ If the metal has a diameter of 3 inches, then its circumference

  is 9.42 inches

∴ D is true

E.

∵ The metal has a circumference of 4π inches

∵ C = 2πr

- Equate 2πr by 4π

∴ 2πr = 4π

- Divide both sides by 2π

∴ r = 2

- Now you can find the area

∵ A = πr²

∴ A = π(2)²

∴ A = 4π

∴ If the metal has a circumference of 4π inches, then its area

   is 4π  inches²

∴ E is true

The true statements are:

C. If the metal has a radius of 2.5 inches then it has an area of 19.625 in.²

D. If the metal has a diameter of 3 inches and it has a circumference of 9.42 inches.

E. If the metal has a circumference of four pi inches then it has an area of four pi square inches

8 0
3 years ago
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