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cestrela7 [59]
3 years ago
8

There are 25boys and 15girls in a class.if a student is picked at random .what is the probability that the student is a girl

Mathematics
1 answer:
emmasim [6.3K]3 years ago
7 0

Answer:

Step-by-step explanation:

Total Students in Class = 25+ 15=40

Probability= (Number of Girls in Class) ÷ (Total students in Class)

Probability of girl= 15  ÷ 40 = 0.375

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Raymond’s Bake Shop sold 26/1/2 dozen cupcakes on Saturday. On Friday,
Lelechka [254]

Answer:percent increase in cupcake sales from Friday to Saturday= 34%

Step-by-step explanation:

 Step 1

Percent increase = Increase in cup cakes/ Old amount of cupcakes x100

Cupcakes sold on Friday = 19 3/4

Cupcakes sold on  Saturday = 261/2

Increase in sales =26 1/2 -- 19 3/4  ( we will change to decmal for easy solving)

=26.5 - 19.75= 6.75 or 6 3/4

Step 2

Percentage increase = (6 3/4)/ (19 3/4)  x100

Percentage increase = 6.75/19.75 x 100

Percentage increase =0.341 x100 = 34%

7 0
3 years ago
In a large county in Central Pennsylvania, 42% of all registered voters are Democrats and 53% are Republicans. What is the proba
AVprozaik [17]

Answer:

Probability [Randomly selected voter affiliated with other party] = 1/20

Step-by-step explanation:

Given:

Percentage of Democrats voters = 42%

Percentage of Republican voters = 53%

Find:

Probability [Randomly selected voter affiliated with other party]

Computation:

Percentage of other party voters = 100% - [Percentage of Democrats voters + Percentage of Republican voters]

Percentage of other party voters = 100% - [42% + 53%]

Percentage of other party voters = 100% - 95%

Percentage of other party voters = 5%

Probability [Randomly selected voter affiliated with other party] = Percentage of other party voters / 100%

Probability [Randomly selected voter affiliated with other party] = 5% / 100%

Probability [Randomly selected voter affiliated with other party] = 1/20

8 0
3 years ago
Can someone please help me, thanks!!
krok68 [10]
6)
3(n + 4)  < - 62

8) 

   n/3  -  2

hope it helps


4 0
4 years ago
Simplify 3x^2y^3•x^4y
kirill115 [55]

Answer:

Step-by-step explanation:

3x²y³·x⁴y = 3x²x⁴y³y = 3x²⁺⁴y³⁺¹ = 3x⁶y⁴

7 0
3 years ago
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Mashutka [201]
What?
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