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elena55 [62]
3 years ago
15

Can someone solve this addition of rational expressions question

Mathematics
1 answer:
jarptica [38.1K]3 years ago
4 0

3/b - 8 + 7/b +3

combine like terms

3/b + 7/b -8+3

10 /b -5

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What is p (of four sevens in a row in a two dice toss)?
ivolga24 [154]

Answer:

P = 0.0008   (non rounded answer is 0.000771605)

Step-by-step explanation:

You first need to determine how many different ways you can roll a 7 using 2 dice.  You options are...

First Die    Second Die

  1                     6

  2                    5

  3                    4

  4                    3

  5                    2

  6                    1

There are six different ways to roll a 7.  If you do the same for all possible numbers, you will see that there are 36 total options when rolling two dice.  The first die has six options, and the second die also has 6 options.  6x6 = 36.  (This is the fundamental counting principal you have have leared in statistics)

So the chances of rolling a 7 one time with two dice is 1/6.  Since repeated rolling of dice is an independent event (any roll has no effect on the next roll), you multiply the probabilities of each event.

So the probability of rolling a 7 four times in a row is

(1/6)(1/6)(1/6)(1/6), which simplifies to 1/6^4, or 1/1296,

Probability is written in decimal form, and usually rounded to 4 decimal places.

1/1296 =   0.000771605,  or  0.0008 rounded to 4 decimals

4 0
3 years ago
Evaluating Equations f(5)=4x^2-x+9
zavuch27 [327]

Answer:

404

Step-by-step explanation:

20^2-5+9=

400+4= 404

7 0
3 years ago
the volume of a triangular pyramid is 300 cubic meters. what is the area of the pyramids base if the pyramid height is 3 meters?
RoseWind [281]
I pretty sure the answer would be 300 but correct me if I’m wrong
5 0
3 years ago
These points are linear.
posledela

Answer:

3

Step-by-step explanation:

Select an ordered pair: (2, 7)

Select another ordered pair: (6, 19)

slope = (difference in y)/(difference in x)

slope = (19 - 7)(6 - 2)

slope = 12/4

slope = 3

4 0
3 years ago
Read 2 more answers
Please help me i dont understand this question will mark brainlest
harkovskaia [24]

Answer:

6

Step-by-step explanation:

M is midpoint of LN, so 3x = 2x + 2

3x = 2x + 2

3x - 2x = 2x + 2 - 2x

x = 2

LM is = 3x, so it's 3.2 = 6 units

Hope this helps ^-^

4 0
4 years ago
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