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mylen [45]
3 years ago
6

What is the gradient of the blue line?

Mathematics
2 answers:
mamaluj [8]3 years ago
5 0

Answer:

One of it culd be -3 or 3

Step-by-step explanation:

cupoosta [38]3 years ago
4 0

Answer:

4

Step-by-step explanation:

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A sample of size 20 from a normal distribution has sample mean 3.5 and sample variance 14.75. Find 90% confidence intervals for
aleksley [76]

Answer:

Variance =9.2983, 27.6927

Standard deviation = 3.0493, 5.2624

Step-by-step explanation:

n = 20

S = 14.75

X² = chisquare

N-1 = degree of freedom

Alpha = 0.1

Alpha/2 = 0.1/2 = 0.05

1-0.1/2 = 0.95

Using statistics table

X² 19,0.05 = 30.14

X² 19, 0.95 = 10.12

A. 19(14.75)/30.14 , 19(14 75)/10.12

= 9.2983, 27.6927 for the variance of the population

B. Standard deviation = square root of variance

= √9.2983, √27.6927

= 3.0493, 5.2624

Please use attachment for better understanding

5 0
3 years ago
If the half-life of a radioactive substance is 2,800 years, then at what rate is it decaying?
vlada-n [284]

Answer:

0.0001075

Step-by-step explanation:

The relation between halflife and rate at which it is decaying is given by

t_{\frac{1}{2} } =\dfrac{log2}{rate}

now in the above problem halflife is given as 2800 years substituting in the above equation we get the value of rate at which it is decaying to be rate=0.0001075.

6 0
3 years ago
At the farmers marke, two pounds of peaches cost $4.20. How much will five pounds cost
Paha777 [63]
10.50 should be your answer
6 0
3 years ago
Read 2 more answers
When graphing a linear inequality, what does a dashed boundary line indicate?
____ [38]

Answer:

the dashed line means you don't include any points on the line... and is represented by the inequalities

Step-by-step explanation:

6 0
3 years ago
Manuel traveled 22 hours nonstop to​ mexico, a total of 9090 miles. he took a train part of the​ way, which averaged 5050​mph, a
Anna35 [415]
Bro stop play this easyyy 
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3 years ago
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