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Semenov [28]
3 years ago
9

1. Write an expression equivalent to:

Mathematics
1 answer:
Nataly_w [17]3 years ago
3 0
Example answers:

1) -8x + 66

2) -2(5x+10) -2(-3x+8)
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Write as a simple fraction for x+3/x-3 - x-2/x+2​
Nostrana [21]
It cancels out and gets 0
8 0
3 years ago
Read 2 more answers
2(a-3)÷(a-4)(a-5)+a-1÷(3-a)(a-4)+a-2÷(5-a)(a-3) simplify.​
Arlecino [84]

<u><em>I'm almost confident that I did this wrong, but i tried...</em></u>

Answer:

4a-9 ÷ -19

Step-by-step explanation:

(It was easier for me to put it in fractions)

\frac{2(a-3)}{(a-4)(a-5)} + \frac{a-1}{(3-a)(a-4)} + \frac{a-2}{(5-a)(a-3)}        (3-a) (a-4) + (5-a) (a-3)

\frac{2a-6}{(a-4)(a-5)} + \frac{a-1}{(3-a)(a-4)} +  \frac{a-2}{(5-a)(a-3)}      3 - a · a - 4 + 5 - a · a - 3

    \frac{2a-6}{(2a-20)} + \frac{a-1}{(3-a)(a-4)} + \frac{a-2}{(5-a)(a-3)}               3 - a + 1 - a - 3

   \frac{2a-6+a-1+a-2}{(2a-20)+(3-a)(a-4)+(5-a)(a-3)}                        1 - a - a

                 \frac{4a-9}{2a-20+1-2a}                                       1 - 2a

                   \frac{4a-9}{2a-19-2a}

                      \frac{4a-9}{-19}

8 0
3 years ago
Please please please help!! this is a quiz please<br><br> please give an explanation too
stiv31 [10]

Answer:

The temperature dropped 12 degrees over 3 hours. How much did it change each hour?

Step-by-step explanation:

This question (the answer) is asking you to do 12 divided by 3. That would be 12/3 (which is what was in the original question). Also, the temperature dropped, so that would be why it is -12/3

4 0
3 years ago
A. (0,-10)<br> B.(-10,0)<br> C.(0,-2)<br> D.(-2,0)
astra-53 [7]

Answer:

B

Step-by-step explanation:

I'm unsure because the image is a bit blurry but the x-intercept is probably -10,0. The x -intercepts are x -values for which the function has a value of zero: f(x)=0 f ( x ) = 0 . So with plain logic, the numerator will be 0.

Hopefully, this helps!

6 0
2 years ago
PLEASE HELP! A basket contains four apples and five peaches. Three times, you randomly select a piece of fruit, return it to the
Lana71 [14]

Answer:  

  • 100 / 729    

Explanation:  

The general formula to calculate the probability of each event is:  

  • Probability = number of positive (desired) outcomes / number of total outcomes  

Number of apples = 4

Number of peaches = 5  

Number of fruits = 9  

Since the three times you return the radomly selected fruit, and then mix it, the three times the probability is not affected by the previous selection; so, these are independent events, and you can calculate the probability of the joint event as the product of the probabilities of each individual event.  

  • <u>First time:  </u>

       Probability of getting an apple = number of apples / number of fruits = 4 / 9  

  • <u>Second time:  </u>

       Probability of getting a peach = number of peaches / number of fruits = 5 / 9  

  • <u>Third time:  </u>

<u />

       Probability of getting a peach = number of peaches / number of fruits = 5 /9  

  • <u>Joint probability:</u>

       = (4/9) × (5/9) × (5/9) = (4 × 5 × 5) / (9 × 9 × 9) = 100 / 729

5 0
3 years ago
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