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77julia77 [94]
2 years ago
13

Please help with these problems.

Mathematics
1 answer:
DiKsa [7]2 years ago
7 0
13 should be b and
14 is a because geometric mean to have a common ratio
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Once again 1 question thank you :D
Basile [38]
4(3x -1)²
= 4(9x² - 6x + 1) 
= 36x² - 24x + 4 (Answer D)
8 0
3 years ago
Can someone pls help ASAP
Vera_Pavlovna [14]

Answer:

89.44

Step-by-step explanation:

using the Pythagorean Theorem: a^{2} +b^{2}=c^{2}

80^{2} +b^{2} =120^{2} \\6400+b^{2} =14400\\b^{2}  = 8000\\b = 40\sqrt{5}

120 is the hypotenuse so it would be c in the equation.

To solve, I simplified and isolated the variable. I got the square root of 8000 simplified (but idk how to write that out lol)

This answer is closest to 89.44

*Hope this helped! Have a great day/ night wherever you are! : )*

3 0
3 years ago
What is the ratio of 5 turtles and 3 seals
lapo4ka [179]

Answer: 5:3

Step-by-step explanation:

Because there are five turtles and three seals which would mean it would be 5:3

3 0
3 years ago
The yearbook club had a meeting. The meeting had 30 people, which is three-fifths of the club. How many people are in the club?
pentagon [3]
The total amount of people in the club is 50.


6 0
2 years ago
Miguel is playing a game in which a box contains four chips with numbers written on them. Two of the chips have the number 1, on
jolli1 [7]

Answer:

See explanation

Step-by-step explanation:

<h3 /><h3>Step 1</h3>

Miguel wins $2 is if he pulls two chips with the number 1.  

<u>Probability of winning is: </u>

  • 2/4 * 1/3 = 1/6  as there are 4 chips in total

<u> Probability of loosing is:</u>

  • 1- 1/6 = 5/6
<h3 /><h3>Step 2</h3>

<u>Missing values we found in the step 1, can be populated in the table:</u>

  • Xi === 2 === -1
  • P(Xi) === 1/6 === 5/6

<u>Expected Value as per table data:</u>

  • 1/6*2 + 5/6*(-1) = -1/2

Expected value is $1/2 loss each time he plays

<h3 /><h3>Step 3</h3>

To make the game fair, the expected value should be zero.

<u>Then as per the calculation above, let's replace 2, with x, and find its value.</u>

  • 1/6x + 5/6*(-1) = 0      
  • 1/6x = 5/6                  
  • x= 5  

So the amount should be $5 to make the game fair.

6 0
3 years ago
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