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Elodia [21]
3 years ago
9

What factor would you need to multiply(3x – 1) by to get922 - 12

Mathematics
1 answer:
Helen [10]3 years ago
5 0

Answer:

32 - 1

Step-by-step explanation:

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Strands Copper wire from a manufacturer are analyzed forstrenghth and conductivity. The Results from 100 strands are asfollows:S
Thepotemich [5.8K]

Answer and explanation:

Given : Strands Copper wire from a manufacturer are analyzed forstrenghth and conductivity. The Results from 100 strands are as follows :

                                                 Strength Strength

                                                    High             Low

High conductivity                         74                8

Low conductivity                         15                3

To find :

a) If a stand is randomly selected, the probability that is conductivity is high and its strength is high

The favorable outcome is 74

The probability is given by,

P=\frac{74}{100}=0.74

b) If a stand is randomly selected, the probability that its conductivity is low or  strength is low

Conductivity is low A= 15+3=18

Strength is low B= 8+3=11

Conductivity is low and  strength is low A\cap B=3

Probability is given by,

P(A\cup B)=P(A)+P(B)-P(A\cap B)

P(A\cup B)=\frac{18}{100}+\frac{11}{100}-\frac{3}{100}

P(A\cup B)=0.18+0.11-0.03

P(A\cup B)=0.26

c) Consider the event that a strand low conductivity and the event that the strand has a low strength. Are these tow events mutually exclusive?

Since the events the stand has low conductivity and the stand has low strength  are not mutually exclusive, since there exists some cases in which both the  events coincide. i.e. Intersection of both the events exists with probability 0.03.

8 0
3 years ago
Can a triangle be formed with sides 18, 20, 2? If so, classify it by angles..
Nady [450]

Answer:

No, it cannot make a triangle

7 0
3 years ago
I NEED HELP QUICKKKKK
irina1246 [14]

Answer:

8.40

Step-by-step explanation:

Add them all up, which equals to 41.98 you then divide by 5 since you want 20%. you would get 8.396 which rounded to the next penny is 8.40

7 0
3 years ago
Read 2 more answers
2. Find the missing side length of the right<br> triangle below?
strojnjashka [21]

Answer:

The answer for the missing side length is 16

Step-by-step explanation:

You have to use Pythagorean's Theorem a^2 + b^2 = c^2

c^2 is the hypotenuse, which is 20 in this case

a^2 is the bottom, which is 12

and you have to solve for b^2

So

a^2 + b^2 = c^2

12^2 + b^2 = 20^2

b^2 = 20^2 - 12^2

b^2 = 400 -144

\sqrt{b^2} = \sqrt{256}       This cancels out the exponent

b = 16

That's the missing side length

3 0
2 years ago
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Seiko has 7 coins that add up to $1.10. She has the same number of quarters as dimes. The rest of the coins are nickels. How man
exis [7]

Answer:

She would have 3 quarters, 3 dimes, and 1 nickel.

7 0
3 years ago
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