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Ivahew [28]
3 years ago
5

If f(x) = 4x + 2, what is the value of f(3)? O 8 O 14 O 45 O 66

Mathematics
1 answer:
lutik1710 [3]3 years ago
5 0

Answer:

14

Step-by-step explanation:

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A uniform density curve goes from negative 5 to positive 1.
Natali [406]

Answer: Choice B) One-sixth

In other words, the fraction 1/6

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

Explanation:

The base, aka horizontal component, is 6 units long. Count out the spaces from -5 to 1 to get a result of 6.

Or you could subtract and use absolute value in either of these two ways

  • |A - B| = |-5 - 1| = |-6| = 6
  • |B - A| = |1 - (-5)| = |1 + 5| = |6| = 6

Where A = -5 and B = 1 are the endpoints mentioned. Absolute value is used to ensure the result of the subtraction isn't negative. Negative distance on a number line doesn't make sense.

----------

However you determine the base, we'll multiply it by the unknown height which we'll call h. This leads to the area of the rectangle. The area is 6h.

Rule: The area under a probability density curve must <u>always</u> be 1.

So the area 6h must be 1 which helps us see that...

6h = 1

h = 1/6

Divide both sides by 6 to isolate h fully.

3 0
1 year ago
Please answer this I need this to bring up my grade! I’ll really appreciate it if you truthfully answered this!!!
Eva8 [605]
220 miles is the right answer
8 0
2 years ago
Read 2 more answers
I am beggging you..I don't understand how to do this so can someone please write the equations for the problems. You don't have
Natasha_Volkova [10]
12) The answer is 2 months

4 0
3 years ago
Find the magnitude of the vector.<br> (-2,-7)
nevsk [136]

Answer:

\sqrt{53}

Step-by-step explanation:

\begin{pmatrix}-2&-7\end{pmatrix}\\=\sqrt{\left(-2\right)^2+\left(-7\right)^2}\\\\

Then you need to simplify:

=\sqrt{2^2+\left(-7\right)^2}\\=\sqrt{2^2+7^2}\\=\sqrt{4+7^2}\\=\sqrt{4+49}\\=\sqrt{53}

3 0
2 years ago
Read 2 more answers
Suppose the class sizes in high schools in a major public school district are normally distributed with an unknown population me
Blizzard [7]

Answer:

1.703

Step-by-step explanation:

The reason we try to find t score is because the sample size is below 30, meaning the sample size is small

Hence:

Step 1

We find the degree of freedom

The Degrees of freedom = Number of samples - 1

The random number of samples = 28

= 28 - 1

= 27

Step 2

Using a t score table or t score calculator, we can obtain the t score value for a 90% confidence interval and degree of freedom of 27

90% confidence interval =

10% significance level = 0.10 for two tails or 0.1/2 = 0.05 for one tail

Hence: t90 = 1.703

4 0
2 years ago
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