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Len [333]
2 years ago
9

Ramon is a parking lot attendant. He estimates that 30% of the cars in the lot are sedans, 10% are minivans, and 20% are SUVs. H

e designs a simulation. Let 0,1; and 2 represent sedans. Let 3 represent minivans. Let 4 and 5 represent SUVs. Let 6, 7, 8, and 9 represent other cars. The table shows the simulation results. 0435 2512 0290 2452 6392 5306 7507 7268 8818 8028 3481 9296 2670 6810 1773 3557 4172 7737 9872 5423 What is the probability that at least one of the next four cars that enter the lot is an SUV? A. 60% B. 45% C. 55% D. 50%​
Mathematics
2 answers:
ioda2 years ago
6 0

Answer:

B) 45%

Step-by-step explanation:

There are 20 trials in total.

It says that the numbers 4 and 5 represent SUVs. All we have to do is look and count how many trials of the 20 that have the number 4 or 5.

That would be 9 trials that have the number 4 or 5 within it. Then you divide them. 9/20 = 0.45 or 45%

trasher [3.6K]2 years ago
3 0

Answer: B. Did on a p e x

Step-by-step explanation:

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3x + 1 = 5X-13 if anyone knows what to do can they please help ​
Elza [17]

Answer:

  x = 7

Step-by-step explanation:

First, you look at the equation. Identify the locations of variable terms (both sides of the equal sign) and the constant terms (both sides of the equal sign).

If there are any parentheses, it is a good idea to use the distributive property to eliminate them. Here, there are none.

I like to start by subtracting <em>the variable term with the smallest coefficient</em>. Here, that is 3x, so we add -3x to both sides of the equation.

  3x -3x +1 = 5x -3x -13

  1 = 2x -13 . . . . . . . . . . . . combine like terms

Now, we have the only variable term on one side of the equal sign. We want it by itself, so we need to make the -13 go away. We do that by adding its opposite to both sides of the equation:

  1 +13 = 2x -13 +13

  14 = 2x . . . . . . . . . . . . combine like terms

Finally, we want the coefficient of 2 in the x-term to disappear. We make that happen by multiplying both sides of the equation by 1/2, the reciprocal of that coefficient.

  (1/2)(14) = (1/2)(2x)

  7 = x . . . . the solution

__

It is generally a good idea to <em>check your work</em> by seeing if your solution value satisfies the equation:

  3(7) +1 = 5(7) -13 . . . . put 7 where x is in the original equation

  21 +1 = 35 -13

  22 = 22 . . . . . . x = 7 is the solution

_____

<em>Additional comment</em>

By subtracting 3x from 5x, the result is 2x with a positive coefficient. We could solve the equation just as easily by subtracting 5x from 3x. That result would be ...

  -2x +1 = -13

Subtracting 1 would give

  -2x = -14

and you would multiply by -1/2 to get x=7. I personally like to avoid having this many minus signs show up in the problem. That is why I choose to subtract the x-term with the smallest coefficient.

5 0
3 years ago
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