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Tom [10]
3 years ago
13

Solve this system of equations using the graphing method please y=-1/3x+5 y=-2x

Mathematics
1 answer:
Marizza181 [45]3 years ago
5 0
Graph the equations and locate the intersection.
(-3,6)

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In a lottery game, a player picks six numbers from 1 to 27. If the player matches all six numbers, they win 40,000 dollars. Othe
Alexus [3.1K]

Answer:

We conclude that  expected value of this game is -0.865$.

Step-by-step explanation:

We know that in a lottery game, a player picks six numbers from 1 to 27.

We know that

C_6^{27}=296010

As there is only one advantageous combination, we conclude that the number of non-winning combinations is 296009.

He can win 40,000 dollars.

We calculate:

E(X)=\frac{1}{296010}\cdot 40000\$- \frac{296009}{296010}\cdot 1\$\\\\E(X)=\frac{40000-296009}{296010}\, \$\\\\E(X)=-0.865\, \$

We conclude that  expected value of this game is -0.865$.

7 0
3 years ago
a 10-foot section of a certain rope weighs 8 ounces. What is the length, in feet, of a section that weights 3 pounds? can you pl
Ostrovityanka [42]
Create and solve an equation of ratios:

10 ft       8 oz
-------  =  -------
   x        48 oz                 (note that 3 lb = 48 oz)

Then 480 = 8x, and x = 60 ft   (answer)
6 0
3 years ago
Given two points A and B, there is only one segment that you can name: AB. With three collinear points A, B, and C, there are th
aksik [14]

Answer: 10

Imagine you have 2 slots or boxes that are empty. They represent the possible choices for the letter you pick. For example, you can place B in slot 1 and D in slot 2. There are 5 choices for slot 1 (A,B,C,D,E) and four choices for slot 2. Why 4? Because after we pick the letter for slot 1, we have one less letter to pick from. We can't reuse that letter.

Now multiply those values 5 and 4 to get 20. There are 20 different ways to pick a pair of letters from a pool of 5 total. However, order does NOT matter because the segment AB is the same as BA. Since order doesn't matter, we are doubly counting when we shouldn't. In other words, our count is two times higher than it should be. Instead of 20 pairs, it's actually 20/2 = 10 pairs. That's why the answer is 10.

The list of 10 segments are: {AB,AC,AD,AE,BC,BD,BE,CD,CE,DE}

Side note: you can use the nCr combination formula with n = 5 and r = 2 to get the same answer.

4 0
3 years ago
26. Given the point A(-2,4) translate (x,y) → (x – 4, y - 3) and then reflect over the line y = -x.
Zepler [3.9K]

<em>Greetings from Brasil...</em>

Here is the graphical explanation in the annex.

A = (-2; 4)

A' = (-2 - 4; 4 - 2) = (-6; 1)

After reflection on F(X)

<h2>A'' = (-1; 6)  </h2>

7 0
3 years ago
What is the best name for the figure with the following coordinates? (4, 1), (1, 1), (3, –2), and (0, –2) A. rectangle B. square
Bogdan [553]
I think the answer would be c
8 0
3 years ago
Read 2 more answers
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