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Rashid [163]
3 years ago
15

Use the explicit formula an = a1 + (n - 1) • d to find the 350th term of the sequence below. 57, 66, 75, 84, 93, ... A. 3234 B.

3207 C. 3141 D. 3198
Mathematics
2 answers:
mylen [45]3 years ago
4 0
To use the equation we need a1 and d(the common difference).
We have a1 = 57, we need to find d.
93-84 = 9; 84-75=9; 75-66=9; 66-57=9
d = 9
a350 = 57 + (350-1)(9)
a350 = 57 + (349)(9)
a350 = 57 + 3141
a350 = 3198
Bogdan [553]3 years ago
4 0
Hello : 
57 ,    66  , 75  , 84  , 93 is the arithmetic sequence 
the common difference is : d= 93-84=84-75 =75-66 =66-57 = 9
by formula : <span>an = a1 + (n - 1) • d
n= 350
a350 = 57 +(350-1)(9)=3198.... (answer: </span><span>D. 3198)</span>
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3 years ago
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Some descriptive statistics for a Set of test scores are shown above for this test a certain student has a standardized score of
Serggg [28]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The score of the student is  x = 779.42

Step-by-step explanation:

Generally we can mathematically represent the z-score as

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Here x is the score of the student

substituting 1045.7 for the Mean, 221.9 for the stDev and -1.2 for z we have  

          -1.2 =  \frac{x - 1045.7 }{ 221.9}

=>       -266.28 =  x -1045.7

=>     x  =  -266.28 + 1045.7

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7 0
4 years ago
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