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3 years ago

10

The tree diagram below illustrates the possible outcomes of three tosses of a balanced coin. What is the probability that “heads

” will come up exactly two out of three times
A.1/8
B.1/4
C.3/8
D.1/2

1 answer:

antiseptic1488 [7]3 years ago

5 0

I’m pretty sure its B.1/4

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Look at the picture<br>and if you answer this thank you.

Reika [66]

The table of the tolls for Henderson is the direct variation since the cost is proportional to the miles traveled.

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3 years ago

− ( − ) = what is x

skelet666 [1.2K]

Answer:

There is no x the equation so there is really no answer for x

Step-by-step explanation:

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2 years ago

Graph a parabola whose x-intercepts are at x=-3 and x=5 and whose minimum value is y=-4

docker41 [41]

Answer:

(See explanation for further details)

Step-by-step explanation:

The standard equation of the parabola is:

$y + 4 = C \cdot (x-k)^{2}$

The formula is now expanded into a the form of a second-order polynomial:

$y + 4 = C\cdot x^{2} -2\cdot C\cdot k \cdot x +C\cdot k^{2}$

$y = C\cdot x^{2} - (2\cdot C \cdot k) \cdot x + (C\cdot k^{2}-4)$

The general equation of the second-order polynomial is:

$x = \frac{2\cdot C \cdot k \pm \sqrt{4\cdot C^{2}\cdot k^{2}-4\cdot C\cdot (C\cdot k^{2}-4)}}{2\cdot C}$

$x = k \pm \frac{\sqrt{C^{2}\cdot k^{2}-C^{2}\cdot k^{2}+4\cdot C}}{C}$

$x = k \pm 2\cdot \frac{\sqrt{C}}{C}$

$x = k \pm \frac{2}{\sqrt{C}}$

The equations to be solved are presented herein:

$-3 = k -\frac{2}{\sqrt{C}}$

$5 = k + \frac{2}{\sqrt{C}}$

Now, the solution of the system is:

$-3 +\frac{2}{\sqrt{C}} = 5 -\frac{2}{\sqrt{C}}$

$\frac{4}{\sqrt{C}} = 8$

$\sqrt{C} = \frac{1}{2}$

$C = \frac{1}{4}$

$k = 5 - \frac{2}{\sqrt{\frac{1}{4} }}$

$k = 1$

The equation of the parabola is:

$y = \frac{1}{4}\cdot (x-1)^{2} -4$

Lastly, the graphic of the function is included as attachment.

3 0

3 years ago

If line ON is congruent to line OL find the measure of angle OML

snow_lady [41]

Angle n and angle l have the same degree so set them equal to eachother
7x+8=9x-8
-7x both sides
8=2x-8
+8 both sides
16=2x
÷2 both sides
x=8
solve for angle l
9 (8)-8
72-8=64°
solve for angle OML
90+64+OML=180
154+OML=180
-154 BOTH SIDES
OML=26°

4 0

3 years ago

Which of the following values is equal to − (−3.7)?

mojhsa [17]

Answer:

This term is equal to 3.7

Step-by-step explanation:

When you have two negatives in a row, you can cancel them both and make it a positive.

6 0

3 years ago