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NNADVOKAT [17]
3 years ago
7

Evaluate 20 x (32 – 4) : 50. 20 x (32 - 4) = 50 =

Mathematics
1 answer:
Reptile [31]3 years ago
8 0

Answer:

20 \times ( {3}^{2}  - 4) \div 50 \\  = 20 \times (9 - 4) \div 50 \\  = 20 \times 5 \div 50 \\  = 100 \div 50 \\  = 2

<h2>correct answer will be 2</h2>
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What is the fifth term of the sequence whose first term is 10 and whose common ratio is 1/2?
Cloud [144]

Answer:

D


Step-by-step explanation:

Common ratio of half means that to get each successive terms, you have to multiply the preceding term by half.

Since first term is 10

2nd term is 10*\frac{1}{2}=5

3rd term is 5*\frac{1}{2}=\frac{5}{2}

4th term is \frac{5}{2}*\frac{1}{2}=\frac{5}{4}

5th term is \frac{5}{4}*\frac{1}{2}=\frac{5}{8}


Answer choice D is right.

8 0
3 years ago
Read 2 more answers
PLEASE HELP !
rewona [7]
<h3>Answer:  Choice D)  -$22</h3>

You'll lose on average $22 per roll.

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

Explanation:

Normally there is a 1/6 chance to land on any given side of a standard die, but your friend has loaded the die in a way to make it have a 40% chance to land on "1" and an equal chance to land on anything else. Since there's a 40% chance to land on "1", this leaves 100% - 40% = 60% for everything else.  

Let's define two events

  • A = event of landing on "1".
  • B = event of landing on anything else (2 through 6).

So far we know that P(A) = 0.40 and P(B) = 0.60; I'm using the decimal form of each percentage.

The net value of event A, which I'll denote as V(A), is -100 since you pay $100 when event A occurs. So we'll write V(A) = -100. Also, we know that V(B) = 30 and this value is positive because you receive $30 if event B occurs.

To recap things so far, we have the following:

  • P(A) = 0.40
  • P(B) = 0.60
  • V(A) = -100
  • V(B) = 30

Multiply the corresponding probability and net value items together

  • P(A)*V(A) = 0.40*(-100) = -40
  • P(B)*V(B) = 0.60*30 = 18

Then add up those products:

-40+18 = -22

This is the expected value, and it represents the average amount of money you earn for each dice roll. So you'll lose on average about $22. Because the expected value is not zero, this means this game is not mathematically fair.

This does not mean that any single die roll you would lose $22; instead it means that if you played the game say 1000 or 10,000 times, then averaging out the wins and losses will get you close to a loss of $22.

7 0
2 years ago
Which statements describe acceleration? Check all that apply.
serious [3.7K]
<span>Positive acceleration occurs when an object speeds up in the positive direction.
Positive acceleration occurs when an object speeds up in the negative direction.
Hope this helps.</span>
8 0
3 years ago
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After 3.5 hours, Pasha had traveled 217 miles. If she travels at a constant speed, how far will she have traveled after
Artemon [7]
248 miles should be the answer
6 0
2 years ago
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What is the equation of the line passing through the points (Two-fifths, StartFraction 19 Over 20 EndFraction) and (one-third, S
Elan Coil [88]

Answer:

You have to find the slope first. Which is y1-y1 divided by x1-x2

Then you find the y-intercept which you take the slope for m like for example if you find the slope, 2, then the equation should be y=2x+b. You take the coordinates on the problem and put them on the y or x on the equation. Then when you find the y-intercept you add it to the equation like for the example that I used above, you have to put the y-intercept on b. So if the y-intercept is 5 then the equation would be y=2x+5.

5 0
3 years ago
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