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]

$36x^2 + 11x - 35=0\\\\ \frac{-b \pm \sqrt{ b^2 -4( a)(c)} }{2(a)}\\\\ \frac{-11\pm \sqrt{11^2 -4(36)(-35)} }{2(36)}\\ \\ \frac{-11\pm \sqrt{5161 } }{72}\\\\\\ x = 0.8450013919812116\\\\ \text{ } x = -1.1505569475367672$