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3 years ago

Which is the better buy

Mathematics

1 answer:

Tasya [4]3 years ago

3 0

$12 for 3 pies = $4 for 1 pie
$10 for 2 pies = $5 for 1 pie
store A is the better buy

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A laboratory tested n = 98 chicken eggs and found that the mean amount of cholesterol was LaTeX: \bar{x}x ¯ = 86 milligrams with

Harrizon [31]

Answer:

1.3859

Step-by-step explanation:

The formula for Margin of Error is given as:

Margin of Error = Critical value × Standard Error

Critical value = z score

In the question, we are given a confidence interval of 95%.

Z score for a 95% confidence level is given as: 1.96

Hence, critical value = 1.96

Standard Error = σ / √n

Where n = number of samples = 98 chicken eggs

σ = Standard deviation = 7 milligrams

Standard Error = 7/√98

Standard Error = 0.7071067812

Hence, Margin of Error = Critical value × Standard Error

Margin of Error = 1.96 × 0.7071067812

Margin of Error = 1.3859292911

Therefore, the margin of error corresponding to a 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is approximately 1.3859

8 0

3 years ago

What is the equation in slope-intercept form of the line?

irga5000 [103]

Answer:

y = 1x - 500

Step-by-step explanation:

b is were the line crosses the y axis so its -500

and to find slope you do -200-(-400) over 300-100 and it equals 1

hope this helps:)

6 0

3 years ago

A puddle is 0.06 feet deep after 1 hour and 0.03 feet deep after 5 hours. At what rate in

Fed [463]

Assuming it's a constant rate, there is a four hour difference from t=1 and t=5, so subtract the difference in depth (0.03 - 0.06) and divide that by four.

-0.03/4 = -0.0075
So your change in depth in feet per hour is -0.0075 $\frac{ft}{hr}$ .

6 0

3 years ago

What are the equations of asymptotes of the graph of the function f(x)=3x^2-2x-1 / x^2+3x-10

True [87]

An asymptote is of a graph of a function is a line that continually approaches a given curve but does not meet it at any finite distance.
There are three major types of asymptote: Vertical, Horizontal and Oblique asymptotes.
Vertical asymptotes are vertical lines which correspond to the zeroes of the denominator of a rational function. They are the values of x for which a rational function is not defined.
Thus given the rational function:
The vertical asymptotes are the vertical lines corresponding to the values of x for which

Solving the above quadratic equation we have:

Therefore, the vertical asymptotes of the function
are x = 2 and x = -5

The horizontal asymptote of a rational function describes the behaviour of the function as x gets very big.The horizontal asymptote is usually obtained by finding the limit of the rational function as x tends to infinity.
For rational functions with the highest power of the variable of the numerator less than the highest power of the variable of the denominator, the horizontal asymptote is usually given by the equation y = 0.
For rational functions with the highest power of the variable of the numerator equal to the highest power of the variable of the denominator, the horizontal asymptote is usually given by the ratio of the coefficients of the highest power of the variable of the numerator to the coefficient of the highest power of the denominator.
Therefore, the horizontal asymptotes of the function
is

4 0

3 years ago

Read 2 more answers

Express x% of 4 plus y% of 5 as a percentage of 11

djverab [1.8K]

X% of 4 = x*4/100 = 0.04x

y% of 5 = x*5/100 = 0.05y

x% of 4 + y% of 5 = 0.04x + 0.05y

How you express a number, n, as percentage of 11?: [n/11]*100= 9.10n %

Then make n = 0.04x + 0.05y

9.10n %= 9.10[0.04x + 0.05y] %= (0.3656x + 0.455y)%

.

4 0

4 years ago