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3 years ago

6

Which graph shows the probability distribution for the random variable representing the number of greens (green is represented b

y the letter g)

2 answers:

zmey [24]3 years ago

8 0

Answer: Option B

The second chart

Step-by-step explanation:

Did it on edge

Natalka [10]3 years ago

3 0

Answer:

The Second one

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Use a separate sheet of paper to solve the system of inequalities by graphing. Use the graph to decide if the point (1, –1) is i

Lena [83]

Answer:

The answer is no though, the point (1,-1) is below both.

Step-by-step explanation:

So the two inequalities are y≤-3x+3 and 3x+8y≥3

With inequalities you have to know a few things. First, when you graph you may have to use non solid lines. for instance, if you had x<5, 5 would not be part of the answer because it is only answers less than 5. so you represent this by making a dashed line that says "you cannot include values on this line". Second, with algebra, if you multiply both sides by a negative it flips the inequality. for instance -y > 54 you would multiply (or divide) by -1 and it would change to y < -54. Third, when graphing an inequality, treat it like an equation and graph the line as if it were said equation(with solid or dashed lines as needed) then, if it is y > f(x) you shade in the section above the line and y < f(x) shades in below. The shaded part is your answer basically. Now lets get into yours.

y≤-3x+3

It is already in the form y = f(x) so grapht he line 3x + 3 with a solid line since it is y is less than or equal to, then shade below that line.

3x+8y≥3

First get it so y is by itself

3x+8y≥3

8y≥3 - 3x

y ≥ 3/8 - 3/8 x

Now grapht his line with a solid line and shade the area above it.

Now, the shaded area below between y ≥ 3/8 - 3/8 x and y≤-3x+3 and the lines are your answer, so you need to check if the point (1, -1) is in this shared shaded area or on one of the lines.

The answer is no though, the point (1,-1) is below both.

6 0

4 years ago

What is the y value of the vertex

Alenkasestr [34]

Answer:

y value = 49

Step-by-step explanation:

You are going to be completing the square

y = - x^2 - 10x + 24 Take a minus outside the brackets for the first 2 terms.

y = - (x^2 + 10x) + 24

Take 1/2 the linear term (1/2 10 and square it. Put that value inside the brackets. 1/2* 10 =5; 5^2 = 25

y = - (x^2 + 10x + 25) + 24

Add 25 outside the brackets.

y = -(x^2 + 10x + 25) + 24 + 25. You should stop here and consider why you are adding 25 outside the brackets. It is because there is a - sign in front of the trinomial and what is inside the brackets is really - 25 when the brackets are removed. Therefore to balance that, you add 25.

Now complete the square.

y = - ( x + 5)^2 + 49

The value you seek is 49.

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

I'll confirm this with a graph.

4 0

4 years ago

In a problem it says that x is "at most –5." What does this mean?

STatiana [176]

It means that -5 is the range of your answer, it will be less than that.

8 0

3 years ago

Read 2 more answers

A bag contains 3 gold marbles, 6 silver marbles, and 22 black marbles. Someone offers to play this game: You randomly select one

Savatey [412]

Answer:

$-1

Step-by-step explanation:

because you have more black marbles your chances of getting a black marble are highest

7 0

3 years ago

What is 18.5% of 500?<br> 9.25<br> 92.5<br> 925<br> 0.925

Lady bird [3.3K]

Answer:

92.5

Step-by-step explanation:

$\frac{18.5}{100} = \frac{x}{500}$

cross multiply:

18.5 · 500 = 9250

100 · x = 100x

isolate x by dividing 100 from both sides:

x = 92.5

hope this helps!

3 0

2 years ago

Read 2 more answers