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Karolina [17]
3 years ago
11

Please help me ,,.......

Mathematics
1 answer:
olga2289 [7]3 years ago
8 0
Out of 100 students, only 12 students picked the violin

thus the probability of a student picking the violin would be
12/100 = 6/50 =3/25 = 12%
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What is the sum of the arithmetic sequence 3, 9, 15…, If there are 34 terms?
snow_tiger [21]

Answer:

first we find the common difference.....do this by subtracting the first term from the second term. (9 - 3 = 6)...so basically, ur adding 6 to every number to find the next number.

we will be using 2 formulas....first, we need to find the 34th term (because we need this term for the sum formula)

an = a1 + (n-1) * d

n = the term we want to find = 34

a1 = first term = 3

d = common difference = 6

now we sub

a34 = 3 + (34-1) * 6

a34 = 3 + (33 * 6)

a34 = 3 + 198

a34 = 201

now we use the sum formula

Sn = (n (a1 + an)) / 2

S34 = (34(3 + 201))/2

s34 = (34(204)) / 2

s34 = 6936/2

s34 = 3468 <=== the sum of the first 34 terms:

6 0
3 years ago
Is the question statistical yes/no|how old are the students in my school
mestny [16]

Answer:

Step-by-step explanation:

Yes that is a statistical question

6 0
3 years ago
What is the value of the expression (–5) -3 but the -3 is an exponent.
Vanyuwa [196]

Answer:

Answer: -0.008

Step-by-step explanation:

Hope this helped!

6 0
3 years ago
Translate 5 times a number decreased by 2 into algebraic equation.
iragen [17]

Hello from MrBillDoesMath!

Answer:             5n - 2  

where "n" is the number mentioned in the problem statement

Thank you,

MrB

3 0
3 years ago
Read 2 more answers
What does 20 * 1 * 2 equal?
ladessa [460]

Answer:

40

Step-by-step explanation:

20 * 1

= 20

20 * 2

= 40

5 0
3 years ago
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