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Anton [14]
3 years ago
14

What is the 10th term in the sequence below? -1, 1, 3, ... Write your answer as a number.

Mathematics
2 answers:
Annette [7]3 years ago
8 0
We notice that the difference between the 2nd term & the first is equal to the difference of the 3rd with the second:

1-(-1) = (3-1) = 2 . So d (common difference ) =2

This is an arithmetic progression with first tem a₁ = (-1) & d =2

Calculating the nth term: Last term = a₁ + (n-1)d
10th term = (-1) + (10-1)(2)= -1 +(9x2) =17
N76 [4]3 years ago
3 0
-1 plus 2 equals 1. 1 plus 2 equals 3....
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Harry is trying to solve the equation y = 2x^2 − x − 6 using the quadratic formula. He has made an error in one of the steps bel
Bond [772]
He made a mistake in step #2. It seemed to be a trivial mistake because it involved signs, but it still had a great impact. Since step#2, his solution was already wrong.

Instead of
(-1)²-4(2)(-6) = 1 + 48 = 49

What he did is
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4 0
3 years ago
A company manager for a tire manufacturer is in charge of making sure there is the least amount of defective tires. If the tire
Anestetic [448]

Answer:

0.347% of the total tires will be rejected as underweight.

Step-by-step explanation:

For a standard normal distribution, (with mean 0 and standard deviation 1), the lower and upper quartiles are located at -0.67448 and +0.67448 respectively. Thus the interquartile range (IQR) is 1.34896.

And the manager decides to reject a tire as underweight if it falls more than 1.5 interquartile ranges below the lower quartile of the specified shipment of tires.

1.5 of the Interquartile range = 1.5 × 1.34896 = 2.02344

1.5 of the interquartile range below the lower quartile = (lower quartile) - (1.5 of Interquartile range) = -0.67448 - 2.02344 = -2.69792

The proportion of tires that will fall 1.5 of the interquartile range below the lower quartile = P(x < -2.69792) ≈ P(x < -2.70)

Using data from the normal distribution table

P(x < -2.70) = 0.00347 = 0.347% of the total tires will be rejected as underweight

Hope this Helps!!!

6 0
3 years ago
The present ages f Nick and David are in the ratio 5:7. After four years the ratio of their ages will be 3: 4 . find their prese
GrogVix [38]

Answer: nike is 20 year david is 28 year

Step-by-step explanation:

7 0
3 years ago
What is the answer to my question, 45x27?​
TiliK225 [7]

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1,215

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
OMG I'M LITERALLY CRYING PLS HELP!!!!
zepelin [54]
The answer would be $25.22 the way to do this would be to divide 7.76 by 4 and then you would multiply that answer by 13 so it would be the 4th answer
7 0
3 years ago
Read 2 more answers
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