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lara [203]
3 years ago
13

Find the first term of the arithmetic sequence in which t22=1008 and d= -8

Mathematics
2 answers:
iren2701 [21]3 years ago
6 0
You misunderstood lol

pantera1 [17]3 years ago
5 0
Tn = nth term
t22 = 22nd term
d = common difference
d = -8
n = number of terms
n = 22
.
tn = t1 + (n - 1)d
t22 = t1 + (n - 1)d
1008 = t1 + (22 - 1)-8
1008 = t1 + (21)-8
1008 = t1 + 168
1008 - 168 = t1
840 = t1
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Solve 4e^2x-3=12 please help
Anestetic [448]

4*e^{2x} -3 = 12

Step 1:

Here we have -3 in subtraction on the left side, so when we take it to the right we apply opposite operation of subtraction that is addition.

4*e^{2x} = 12+3

4*e^{2x} = 15

Step 2:

Next we have 4 in multiplication on left side, so dividing right side by 4,

e^{2x} = 15/4

e^{2x} = 3.75

Step 3:

taking log on both sides

ln ( e^{2x}) = ln(3.75)

{2x} =ln 3.75

Step 4:

Dividing right side by 2,

x= ln (3.75) /2 = 0.66088

Answer : x = 0.66088..


5 0
3 years ago
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What is the solution of this equation? 3a = 18
Triss [41]
3a =18

3a/3 = 18/3

a = 18/3

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6 0
4 years ago
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The function f(t) = t2 + 6t − 20 represents a parabola.
Novay_Z [31]
Part A: f(t) = t² + 6t - 20
              u = t² + 6t - 20
         + 20            + 20
      u + 20 = t² + 6t
u + 20 + 9 = t² + 6t + 9
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      u + 29 = t(t + 3) + 3(t + 3)
      u + 29 = (t + 3)(t + 3)
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          - 29       - 29
              u = (t + 3)² - 29

Part B: The vertex is (-3, -29). The graph shows that it is a minimum because it shows that there is a positive sign before the x²-term, making the parabola open up and has a minimum vertex of (-3, -29).
------------------------------------------------------------------------------------------------------------------
Part A: g(t) = 48.8t + 28           h(t) = -16t² + 90t + 50
            | t |   g(t)  |                          |  t  |  h(t)  |
            |-4|-167.2|                          | -4 | -566 |
            |-3|-118.4|                          | -3 | -364 |
            |-2| -69.6 |                          | -2 | -194 |
            |-1| -20.8 |                          | -1 |  -56  |
            |0 |   -28  |                          |  0  |   50  |
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            |3 | 174.4|                          |  3  | 176  |
            |4 | 223.2|                          |  4  | 154  |
The two seconds that the solution of g(t) and h(t) is located is between -1 and 4 seconds because it shows that they have two solutions, making it between -1 and 4 seconds.

Part B: The solution from Part A means that you have to find two solutions in order to know where the solutions of the two functions are located at.
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3 years ago
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HELP!! <br> According to the graph, what is the value of the constant in the equation below?
maks197457 [2]

Answer:

<h3>The answer is option B</h3>

Step-by-step explanation:

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From the question

Using

height = 30

width = 2

We have

constant = 30 × 2 = 60

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Using

height = 12

width = 5

constant = 12 × 5 = 60

Since the constant is the same for any values used

<h3>constant = 60</h3>

Hope this helps you

5 0
3 years ago
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The probability that a flight that departs on schedule also arrives on schedule
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4 years ago
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