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user100 [1]
3 years ago
8

What is the answer ? I need help

Mathematics
1 answer:
77julia77 [94]3 years ago
8 0

Answer:

-42

Step-by-step explanation:

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4x4 + 32x - 28 = 0<br> whats the answer to this
Stells [14]

Answer:

0

Step-by-step explanation:

4x4 + 32x - 28 = 0

5 0
3 years ago
Read 2 more answers
Population A and Population B both have a mean height of 70.0 inches with an SD of 6.0. A random sample of 50 people is picked f
Alex

Answer:

Sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.

Step-by-step explanation:

To yield a more accurate estimate of the population mean, margin of error should be minimized.

margin of error (ME) of the mean can be calculated using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in the given confidence level(z-score or t-score)
  • s is the standard deviation of the sample (or of the population if it is known)
  • N is the sample size

for a given confidence level, and the same standard deviation, as the sample size increases, margin of error decreases.

Thus, random sample of 50 people from population A, has smaller margin of error than the sample of 20 people from population B.

Therefore, sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.

7 0
4 years ago
The price of a large can of fancy popcorn is $8.17. Between which two prices is the price of the popcorn?
schepotkina [342]

Answer:

$8.00 to $8.49

Step-by-step explanation:

a large can of fancy popcorn is $8.17 which means that $8.17 is not higher or lower of $8.00 or $8.49.

7 0
4 years ago
Read 2 more answers
I need help asap!!!!!!
ololo11 [35]

Answer:

whats the question? i'm not sure what you're trying to ask here

Step-by-step explanation:

8 0
3 years ago
Find the equation of the line that passes through both (5,1) and (8,-2)
Georgia [21]

Let f(x) = ax+b be the line that passes through both points.

We know that f(5) = 1 and f(8) = -2. So:

\begin{cases}5a+b = 1 \\ 8a+b = -2\end{cases}

Solving the system, we get that a= -1 and b = 6.

So the line is equal to f(x) = 6-x.

5 0
3 years ago
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