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I am Lyosha [343]
3 years ago
11

What is the equation of the line of best fit for this data

Mathematics
1 answer:
77julia77 [94]3 years ago
6 0

Answer:

y = 0.96x + 0.57


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jonas practice guitar for 2 hours in 2 years. Bradley practice 4 more hours the joans. How many more practice id Bradley did the
Zolol [24]

According to what your saying, the answer should be bradley got 4 more hours

Step-by-step explanation:

The grammar on this question is kind of bad so i might of misunderstood it but it should be 4 hours.

8 0
3 years ago
Use the discriminant to describe the roots of each equation 16x^2+8x+1=0
Leokris [45]
In any quadratic equation: ax² + bx + c = 0,
the discriminant is Δ = b² - 4.a.c

1) If Δ > 0 → we have 2 distinguished roots
2) If Δ = 0 → we have 2 EQUAL roots
3) If Δ < 0 → we have no real roots (we call the results imaginary or complex)

16x² +8x + 1 = 0
Δ = 8² - 4(16)(1) →Δ = 64 - 64 = 0

Since Δ = 0, we have 2 equal roots→ x' = x"

Solve the equation: 

x' = [(-8)+√0]/2(16) = -8/32 = -1/4

x" = [(-8)-√0]/2(16) = -8/32 = -1/4

 
6 0
3 years ago
Can you please help me
Alisiya [41]

11.25/2.50 you get 4.5 feet. You can purchase 4.5 feet of candy.

4 0
4 years ago
Please help me!!!!!!!
Zolol [24]
The Most Logical Answer is B
8 0
3 years ago
Direct mail advertisers send solicitations​ ("junk mail") to thousands of potential customers in the hope that some will buy the
Arte-miy333 [17]

Answer:

The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 1160, \pi = \frac{144}{1160} = 0.1241

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1241 - 1.645\sqrt{\frac{0.1241*0.8759}{1160}} = 0.1082

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1241 + 1.645\sqrt{\frac{0.1241*0.8759}{1160}} = 0.14

The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%

3 0
3 years ago
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