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4 years ago

Could you explain and answer the question?

Mathematics

2 answers:

podryga [215]4 years ago

7 0

So F(6) means 6 on the x axis then look to see where the graph is on the Y axis,

in this case on x 6 y=4

8090 [49]4 years ago

6 0

F(x) = f(6) means what is the value of y if x = 6.
You can see it on the graph for x = 6, y or f(x) = 4

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Sandra swims the 100-meter freestyle for her school’s swim team. Her state’s ranking system awards 3 points for first place, 2 p

Elina [12.6K]

Answer:

2.25

Step-by-step explanation:

The total frequency is:

20 + 12 + 6 + 2 = 40

Calculate the probability of each score:

P(X=3) = 20/40 = 0.50

P(X=2) = 12/40 = 0.30

P(X=1) = 6/40 = 0.15

P(X=0) = 2/40 = 0.05

So the expected value is:

E = (3)(0.50) + (2)(0.30) + (1)(0.15) + (0)(0.05)

E = 2.25

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3 years ago

A ball is thrown into the air with an initial velocity of 60 ft/s. its height h in feet after t seconds is given by the function

timurjin [86]

Answer:A: plug it into a online graphing calculator and find the highest point and where it is on the x axis at that point

b: find the highest point and where it is on the y-axis at that point

Step-by-step explanation:

above

8 0

3 years ago

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PLEASE HELP!!! <br> Match the symbol notation with the picture it is describing.

shtirl [24]

Answer:

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8 0

3 years ago

Middle school Math!!!

liraira [26]

<h2>Answers:</h2>

Question 1: The equations share the same slope, but different y-intercepts.

Question 2: Option B (y = 2x + 1)

<h2>Explanations:</h2><h3>For Question 1:</h3>

Both equations are written in slope intercept form.

$y = mx+b\\\\\text{m - slope}\\\text{b - y-intercept}$

The equations we have are:

$\left \{ {{y=2x} \atop {y=2x-7}} \right.$

Both equations share the same slope of 2. However, they have different y-intercepts.

y = 2x can be written as y = 2x + 0.

Usually if you only have the slope in your equation then the y-intercept is the origin, or (0, 0).

The second equation's y-intercept is -7. It takes 'b's place.

<h3>For Question 2: </h3>

We are given a graph and we need to find a equation.

According to the graph, the line passes at (0, 1). 1 is the y - intercept.

Since y = 2x + 1 is the only option with 1 as the y - intercept, it should be the correct answer.

I'll do the slope as well to verify our answer.

I will use the points (-1, -1) and (1, 3).

$m=\frac{3-(-1)}{1-(-1)}=\frac{4}{2} =\boxed{2}$

The correct answer should be $y = 2x+1$ .

Hope this helps you.

6 0

3 years ago

Is my answer correct ??

Tpy6a [65]

The largest triangle and the triangle whose hypotenuse is x are similar. So:

(21 + 4)/x = x/4

Cross multiply:

x^2 = 100

x = 10

Your answer is incorrect. It should be 10, not 20.

5 0

3 years ago

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