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maria [59]
2 years ago
11

Help, i was out sick for most of the week before and didnt learn this materal, i really need help

Mathematics
1 answer:
Dafna1 [17]2 years ago
3 0

Answer:

example 1 is correct

a^2 - b^2 factors as (a+b)(a-b)

that is a form that math teachers want you to memorize

it is called the "difference of squares" factoring

Step-by-step explanation:

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Factor using the magic X method:<br><br> x^2 + 6x + 5<br><br> SHOW WORK!!!
Schach [20]
Find values that add to 5 and multiply to 6
so the answer would be (x+5)(x+1)

4 0
2 years ago
Please help me :)), do not 'troll' with answers, it's graded...
wolverine [178]

The first one, decreasing then increasing

4 0
3 years ago
Human visual inspection of solder joints on printed circuit boards can be very subjective. Part of the problem stems from the nu
olga_2 [115]

Answer:

a

The probability that the selected joint was judged to be defective by neither of the two inspectors is   P(A' n B' ) = 0.8855

b

The probability that the selected joint was judged to be defective by inspector B but not by inspector A  is  P(A' n B) =0.0403

Step-by-step explanation:

From the question we are told that

   The sample size is n_s =  10000

    The number of outcome for inspector A is  n__{A}} = 742

    The number of outcome for inspector B is  n__{B}} = 745

     The number of joints judged defective by both inspector is n(A u B) =  1145

The the probability that the selected joint was judged to be defective by neither of the two inspectors is mathematically represented as

      P(A' n B' ) =  1 - P(A u B)

Now

       P(A\ u \ B) = \frac{n(Au B)}{n_s }

substituting values

        P(A\ u \ B) = \frac{1145}{ 10 000 }

So  

      P(A' n B' ) =  1 - \frac{1145}{10 000}

     P(A' n B' ) = 0.8855

the probability that the selected joint was judged to be defective by inspector B but not by inspector A  is mathematically represented as

     P(A' n B) =  P(A \ u \ B) -P(A)

Now

        P(A) =  \frac{n__{A}}{n_s}

substituting values

       P(A) =  \frac{742}{10 000}

So

     P(A' n B) =   \frac{1145}{10 000}  - \frac{742}{10 000}

    P(A' n B) =0.0403

7 0
3 years ago
If x = 10 and the area of the rectangle is 120, what is the length of the other side?
sweet [91]

Answer:

12

Step-by-step explanation:

to find area you do length times width. if we have one side we have to find what 120/10 is. that is 12. 10 x 12 is 120.

6 0
2 years ago
NEED HELP !!!!!!!!!!!!!!!!!!!!!!!
kati45 [8]

Answer:

A

Step-by-step explanation:

7 0
3 years ago
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