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3 years ago

This is a algebra question, please help if you can

Mathematics

1 answer:

Rama09 [41]3 years ago

4 0

9514 1404 393

Answer:

Step-by-step explanation:

The given function is quadratic, so it has a turning point. Neither linear nor exponential functions have a turning point, so are always increasing or decreasing.*

The second attachment shows a plot of the function with input on the x-axis and output (area of the rectangle) on the y-axis.

_____

* A linear function that is a horizontal line will be neither increasing nor decreasing.

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Help! The options are: proportional , not proportional

storchak [24]

Answer: Not proportional

=======================================================

Explanation:

Let's assume the two fractions are equal.

If so, then,

$\frac{0.2}{2.6} = \frac{0.3}{3.6}\\\\0.2*3.6 = 2.6*0.3\\\\0.72 = 0.78$

The last equation is false, so the first equation is false.

Therefore, the two ratios are <u>not</u> proportional.

-------------

Another approach:

Calculate the decimal value of each fraction

$\frac{0.2}{2.6} \approx 0.07692\\\\\frac{0.3}{3.6} \approx 0.08333\\\\$

The two ratios result in different decimal values, so the two ratios are not equal, aka not proportional.

7 0

2 years ago

Read 2 more answers

Ann desires to grow tall sunflower plants. She wonders how the amount of water she provides the sunflowers will affect their gro

bixtya [17]

Answer: a

Step-by-step explanation:

6 0

3 years ago

Represent the following sentence as an algebraic expression, where "a number" is the letter x. The product of 8 and a number.

statuscvo [17]

Answer:

x times 8 I'm pretty sure

3 0

3 years ago

During a certain week, the mean price of gasoline in the New England region was $3.796 per gallon. A random sample of 32 gas sta

Ymorist [56]

Answer: the probability that the mean price for the sample was between $3.781 and $3.811 that week is 0.94122

Step-by-step explanation:

Given that;

sample size n = 32

mean μ = $3.796

standard deviation σ = 0.045

P(3.781 < x" < 3.811) = ?

Standard Error S.E = σ/√n = 0.045/√32 = 0.007955

z value for 3.781, z = x-μ/S.E = (3.781-3.796)/0.007955 = -1.8856 ≈ -1.89

z value for 3.811, z = x-μ/S.E = (3.811-3.796)/0.007955 = 1.8856 ≈ 1.89

P(3.781 < x" < 3.811) = P( -1.89 < z < 1.89)

= P(z < 1.89) - P(z < -1.89)

from z-score table

⇒ 0.9706 - 0.02938

⇒ 0.94122

Therefore the probability that the mean price for the sample was between $3.781 and $3.811 that week is 0.94122

6 0

3 years ago

Constant of proportionality?

Anna11 [10]

Answer:

Step-by-step explanation:

uhh division

hope this helped! :)

6 0

2 years ago