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Marat540 [252]
3 years ago
12

Don’t worry bout the answer on the top but can someone help with two and fast ...???

Mathematics
1 answer:
NemiM [27]3 years ago
5 0
I believe it’s $25.50
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Of the 20 flash bulbs in a box, 2 are defective. an inspector will select 2 light bulbs simultaneously and at random from the bo
Shkiper50 [21]

|\Omega|=C(20,2)=\dfrac{20!}{2!18!}=\dfrac{19\cdot20}{2}=190\\
|A|=C(18,2)=\dfrac{18!}{2!16!}=\dfrac{17\cdot18}{2}=153\\\\
P(A)=\dfrac{153}{190}\approx81\%

4 0
3 years ago
Jamal ran 8 kilometers, sprinted 500 meters, and climbed bleachers for a distance of 2 kilometers during track practice. How man
Kruka [31]

Answer:

10500

Step-by-step explanation:

8 times 1000 is 8000

2 times 1000 is 2000

8000 plus 2000 plus 500 is 10500m

5 0
3 years ago
Luke is keeping track of the total number of hours he exercises. He started the summer having already put in 15 hours, and he th
levacccp [35]
If you would like to know what do the f(x) and x represent in Luke's situation, you can find this using the following step:

<span>f(x) = 7x + 15
</span>7 hours each week
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f(x) ... the total number of hours Luke exercises

The correct result would be A) <span>f(x) represents the total number of hours; x represents the number of weeks he exercises this summer.</span>
7 0
3 years ago
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8(d-3)
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