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3 years ago

Can someone please explain how they got this answer because the entire lesson they haven’t shown me how to graph these

Mathematics

1 answer:

I am Lyosha [343]3 years ago

5 0

Answer:

Please check explanations

Step-by-step explanation:

Here, we have three types of equations and three plotted graphs

we have a quadratic equation

an exponential equation

and a linear equation

For a quadratic equation, we usually have a parabola

The first equation is quadratic and as such the first graph that is parabolic belongs to it

For an exponential equation, we usually have a graph that rises or falls before becoming flattened

The second equation represents an exponential equation so the second graph is for it

Lastly, we have a linear equation

A linear equation usually has a straight line graph

Thus, as we can see, the third graph represents the linear equation

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Help me please !!!!!!!!!

Luda [366]

Answer:

I just did it came up with answer but not one of them. This the right answer

7 0

3 years ago

A study measured the speeds at which cars pass through a checkpoint. Assume the speeds are normally distributed such that the av

xxTIMURxx [149]

Answer:

0.3085 = 30.85% probability that the next car will be traveling less than 59 miles per hour.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 61, \sigma = 4$

Calculate the probability that the next car will be traveling less than 59 miles per hour.

This is the pvalue of Z when X = 59. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{59 - 61}{4}$

$Z = -0.5$

$Z = -0.5$ has a pvalue of 0.3085

0.3085 = 30.85% probability that the next car will be traveling less than 59 miles per hour.

7 0

3 years ago

How would you explain what a prime number is to a 3rd grader?

Citrus2011 [14]

Well....
A prime number is a number that can be divided by 1 or by itself, also having to be a whole number greater than 1. Ex. 5 can be divided by 1 or 5 so it is prime.
Hope this helps!

3 0

3 years ago

How do you do the math problem 3 3/6 - 1 4/6

tankabanditka [31]

3 3/6 - 1 4/6 equals 1 5/6

6 0

3 years ago

(a). Consider the parabolic function f(x) = ax² +bx+c, where a ±0, b and care constants. For what values of a, band c is f

ki77a [65]

Information about concavity is contained in the second derivative of a function. Given f(x) = ax² + bx + c, we have

f'(x) = 2ax + b

and

f''(x) = 2a

Concavity changes at a function's inflection points, which can occur wherever the second derivative is zero or undefined. In this case, since a ≠ 0, the function's concavity is uniform over its entire domain.

(i) f is concave up when f'' > 0, which occurs when a > 0.

(ii) f is concave down when f'' < 0, and this is the case if a < 0.

In Mathematica, define f by entering

f[x_] := a*x^2 + b*x + c

Then solve for intervals over which the second derivative is positive or negative, respectively, using

Reduce[f''[x] > 0, x]

Reduce[f''[x] < 0, x]

5 0

3 years ago