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OverLord2011 [107]
3 years ago
14

Please help ‼️‼️ I’m doing functions

Mathematics
1 answer:
eduard3 years ago
8 0
In this problem, you're looking for the value of t, so that f(t) = 48. That means if you put t into 5t-7, you'll get 48. To do this set up and solve an equation for t by setting 48 equal to 5t-7:
5t-7=48

Isolate the variable by adding 7 to both sides. 
5t=55

Divide by 5 on both sides to find t.
t=11

The answer is 11.


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Answer and Step-by-step explanation:

X is equal to 51.

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Can 1,1,2 be the length is a triangle
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pishuonlain [190]

Answer:

a_n = 12 - 3n

Step-by-step explanation:

The first term is 9.

Term 1 is 9.

Term 2 is 9 - 3.

Term 3 is 9 - 2(3).

Term 4 is 9 - 3(3).

Term 5 is 9 - 4(5)

Notice the pattern in terms 3 through 5. For each term, subtract 1 less than the term number multiplied by 3 from 9.

For term n, you subtract 1 less than n times 3 from 9.

The nth term is 9 - (n - 1) * 3

a_n = 9 - (n - 1) \times 3

Now we simplify the expression on the right side.

a_n = 9 - 3(n - 1)

a_n = 9 - 3n + 3

The expression for the nth term is

a_n = 12 - 3n

Let's see if it works.

n = 1

a_n = 12 - 3(1) = 12 - 3 = 9

n = 2

a_n = 12 - 3(2) = 12 - 6 = 6

n = 3

a_n = 12 - 3(3) = 12 - 9 = 3

n = 4

a_n = 12 - 3(4) = 12 - 12 = 0

n = 5

a_n = 12 - 3(5) = 12 - 15 = -3

n = 6

a_n = 12 - 3(6) = 12 - 18 = -6

As you can see, following this rule fro the nth term, we got the same first siz terms you got above. Our answer is correct.

Answer: a_n = 12 - 3n

4 0
3 years ago
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