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ivanzaharov [21]
3 years ago
7

Five chips numbered 1 through 5 are placed in a bag. A chip is drawn and replaced. Then a second chip is drawn. Find the probabi

lity that one chip is even AND the other is odd. (Hint: You can choose an even chip and then an odd chip, or an odd chip and then an even chip.)
Mathematics
2 answers:
Xelga [282]3 years ago
4 0
1 out of 5, since ther are still 5 chips in the bag
hope thishelps
;-)
andrezito [222]3 years ago
4 0

There are 3 odd and 2 even numbers involved here.

So Prob( even then odd) = 2/5 * 3/5 = 6/25

Pro(odd then even) = 3/5 * 2/5 = 6/25

Therefore  Prob( either of the above) = 6/25 + 6/25 = 12/25 (answer)

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The table lists how poverty level income cutoffs​ (in dollars) for a family of four have changed over time. Use the midpoint for
frez [133]

The poverty level cutoff in 1987 to the nearest dollar  was $10787.

<h3>How to find a midpoint?</h3>

The midpoint as the point that divides the line segment exactly in half having two equal segments. Therefore, the midpoint presents the same distance between the endpoints for the line segment. The midpoint formula is: \mathrm{Midpoint\:of\:}\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\quad \left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right).

For solving this exercise, first you need plot the points in a chart. See the image.

Your question asks to approximate the poverty level cutoff in 1987 to the nearest dollar using the midpoint formula. Note that the year 1987 is between 1980 and 1990, thus you should apply the midpoint formula from data for this year (1987).

\mathrm{Midpoint\:of\:}\left(1980,8429),\:\left(1990,13145):\quad \left(\frac{1990+1980}{2},\:\:\frac{13145+8429}{2}\right)\\\\ \\

\mathrm{Midpoint\:of\:}\left(1980,8429)\:=\left(\frac{1990+1987}{2},\:\frac{13145+3843}{2}\right)\\ \\ =\left(\frac{3977}{2},\:\frac{21574}{2}\right)

\mathrm{Midpoint\:of\:}\left(1980,8429)\:=\=(\frac{3977}{2},10787)

The answer for your question will be the value that you calculated for the y-coordinate. Then, the poverty level cutoff in 1987 to the nearest dollar  was $10787.

Read more about the midpoint segment here:

brainly.com/question/11408596

7 0
2 years ago
Which of these rational numbers is a repeating decimal? Type all that apply.
djyliett [7]

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2.153

Step-by-step explanation:

6 0
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A plane intersects a rectangular pyramid horizontally as shown. Describe the cross-section. A) circle B) rectangle C) trapezoid
Paladinen [302]
A plane cuts horizontally across a rectangular pyramid will always be a rectangle. (Answer B)
6 0
3 years ago
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Translate the following into an algebraic expression: The number that is 40% more than five more than a number a.
cricket20 [7]

Answer:

The translation would be

X = 40% + 5 + A

Step-by-step explanation:

First, translate the words, is, more than and 'the number'.

Is means equals (=).

More Than means plus (+).

'the number' can be x.

Now, put it together.

X(The Number) =(Is) 40% +(more than) 5 +(more than) A(a number)

I hope this helps!!

5 0
3 years ago
Solve using substitution, 5x+y=9 10x-7y=-18
BARSIC [14]

Answer:

See below

Step-by-step explanation:

5x + y = 9      re-arrange  to    y = 9-5x  

   use this value of 'y' in the second equation:

    10x - 7(9-5x) = - 18

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  sub in this value of 'x' into one of the equations to compute 'y'

5 (1) + y = 9

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6 0
2 years ago
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