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2 years ago

8

You select a letter randomly from a bag containing the letters s, p, i, n, n, e, and r. find the probability of selecting an s.

description

2 answers:

Ede4ka [16]2 years ago

8 0

Answer:

i think it would be 1/7 also

Step-by-step explanation:

Tems11 [23]2 years ago

3 0

Answer:

1/7

Step-by-step explanation:

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Which of the following choices is the simple formula for the nth term of the following arithmetic sequence?

VladimirAG [237]

First, we start off with the nth term formula for an arithmetic sequence, which is
$a_{n} =a_{1}+(n-1)d$

plug in the sequence numbers where they belong

$a_{n}=5+(n-1)*(-4)
$
$a_{n}=5+(-4n+4)$
$a_{n}=5-4n+4$
$a_{n}=-4n+9$

And this is the final answer
$-4n+9$

4 0

3 years ago

Which operation properly transforms matrix I to matrix II?

Y_Kistochka [10]

Answer:

D

Step-by-step explanation:

Replace R1 with 1 and R3 with 0 you have -2(1)+0 which equals 0 and that matches matrix II. Repeat the process with the other numbers in R1 and R3 and they all come out equal therefor the answer is D.

8 0

2 years ago

Find the prime factor of the number 3825.

Masja [62]

Answer:

the answer is 3×3×5×5×17=3825 use prime factorization

3 0

3 years ago

When a = 6 and b = 22, C = 33. If c varies directly with b and inversely with a, which equation models the situation?

S_A_V [24]

Step-by-step explanation:

C=b/a

c=kb/a

where as k is the constant

c=kb/a

we substitute

33=22k/6

crossed multiply

33*6= 22k

198=22k

we divide both sides by 22

198/22=22k/22

K=9

4 0

2 years ago

The simple formula for the nth term of an arithmetic sequence is an = 5n + 15. What is the explicit formula corresponding to the

Nikitich [7]

Sequence will look like this:
Term 1: 20 --------- 20 + 5(0)
Term 2: 25 --------- 20 + 5(1)
Term 3: 30 --------- 20 + 5(2)
Term 4: 35 --------- 25 + 5(3)
ETC.

It cab noted that the numbers in the bracket (that is, 0, 1, 2, 3, 3, etc) = n-1

Then, the explicit formula will be;
an = 20 + 5(n-1).

The correct answer is D.

7 0

3 years ago