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Taya2010 [7]
3 years ago
7

Original amount: 9 new amount: 6

Mathematics
1 answer:
Rina8888 [55]3 years ago
7 0

Answer:

-3

Step-by-step explanation:

you subtracted 3 from the original amount

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There are 15 rolls of film in a box and 3 are defective. Two rolls are to be selected, one after the other. What is the probabil
dem82 [27]
<h2>Answer:</h2><h2>The probability of selecting a defective roll followed by another defective roll = \frac{1}{35}</h2>

Step-by-step explanation:

The total number of rolls in a box = 15

The number of defective items = 3

Two rolls are to be selected, one after the other. The probability of selecting a defective roll followed by another defective roll = ?

The probability that the first roll is detective = \frac{3}{15}

The probability that the second roll is detective = \frac{2}{14}

Required probability = (\frac{3}{15} ) (\frac{2}{14} )

= \frac{1}{35}

7 0
2 years ago
What value of x makes the equation true?
Aleksandr [31]
♥ Answer: x=-6.9

Solve:
You need to <span>Simplify both sides of the equation.
</span>806.265=-116.85x
Now: <span>Flip the equation.
</span>-116.85x=806.265<span>
</span>Lastly <span>Divide both sides by -116.85.
</span>\frac{-116.85x}{-116.85} = \frac{806.265}{-116.85}


Final answer: x=-6.9


6 0
3 years ago
Solve 6x(6x) + 11x - 35 = 0
Murljashka [212]
36x^2 + 11x - 35=0\\\\ \frac{-b \pm  \sqrt{ b^2 -4( a)(c)} }{2(a)}\\\\  \frac{-11\pm  \sqrt{11^2 -4(36)(-35)} }{2(36)}\\ \\   \frac{-11\pm  \sqrt{5161 } }{72}\\\\\\ x = 0.8450013919812116\\\\ \text{   } x  = -1.1505569475367672
4 0
2 years ago
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Emilia has a bag of colored marbles. The bag contains the same ratio of red marbles to blue marbles as the ratio of green marble
scoray [572]
Red =18
blue=48
green=12
orange=?
red/blue =green/orange
so 18/48=12/orange
let orange = X and solve the equation
8 0
2 years ago
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Sympilfy 31/-8...........
ArbitrLikvidat [17]

Answer:

The fraction -31/8 cannot be simplified.

8 0
3 years ago
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