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podryga [215]
3 years ago
9

SOMEONE PLEASE HELP ME PLEASE, IS ANYONE COULD HELP AND GOOD A MATH PLEAS HELP ASAP. Five pennies, 3 dimes, and 4 quarters re pl

aced in a bag. What is the probability of selecting a quarter and then another quarter, given the first coin is not returned to the bag after it is drawn?
A)2/11
B)1/11
C)1/22
D)5/33
Mathematics
2 answers:
Mila [183]3 years ago
6 0
The answer to the problem is a


trapecia [35]3 years ago
4 0
The answer is (B)

because the probability of the first pull is 4/12 and since you're not putting back it all had a short of a coin. the second pull is another quarter so the probability is 3/11

4/12 * 3/11 = 1/11
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Which equation shows the quadratic formula used correctly to solve 5x2 + 3x – 4 = 0 for x?
vovikov84 [41]

Answer:

x=\frac{-3\pm\sqrt{(3)^2-4(5)(-4)}}{2(5)}

Therefore, Option 1 is correct.

Step-by-step explanation:

We have been given the quadratic equation:

5x^2+3x-4=0

If we compare it will general quadratic equation which is: ax^2+bx+c=0

Here, a=5,b=3 and c= -4.

Now, we will use the formula:

And then x=\frac{-b\pm\sqrt{D}}{2a}

Where,D=b^2-4ac

x=\frac{-3\pm\sqrt{(3)^2-4(5)(-4)}}{2(5)}

Therefore, Option 1 is correct.

6 0
4 years ago
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kenny6666 [7]

Answer:

Luca has 55 crayons as 42 + 13 = 55

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3 years ago
Last year a computer was $350. The computer company raise prices this year and the price has increased by 5%. What was the price
Juliette [100K]

Answer:

367.5

Step-by-step explanation:

5% of 350 is 17.5

$350+$17.5=367.5

6 0
3 years ago
How to graph 3/8 of a fraction on a number line
IRINA_888 [86]

Answer:

So you make a number line right, and make from 0 to 1. You would put 8 dashes between 0 and 1. Once you finished that, you would go to the third dash, and that will be 3/8 on a number line.

Step-by-step explanation:

I hope this helps! :)

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4 years ago
The difference of the square of a number and 10 is equal to 3 times that number. Find the negative solution.
Harrizon [31]

Answer:

-2

Step-by-step explanation:

Let's call the number x. The statement tells us that

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Factoring:

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3 years ago
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