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Vilka [71]
3 years ago
7

A sample of 4 different calculators is randomly selected from a group containing 19 that are defective and 36 that have no defec

ts. what is the probability that at least one of the 4 calculators in the sample is defective?
Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
6 0
<span><span>The probability of all calculators having no defects is 16.8%. The probability of at least one defect is the complement of that probability. 
ie an 83.2% probability of at least one defect.</span><span>
</span></span>
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Find the value of x L 7x-7 M 4x+14
viktelen [127]

Answer:

x= 7 sorry if I'm wrong:(

Step-by-step explanation:

7x - 7 = 4x + 14

7x - 7 - 4x = 4x + 14 - 4x

3x - 7 = 14

3x - 7 + 7 = 14 + 7

3x = 21

x = 21/3

x = 7

8 0
2 years ago
So I have another math question that involves the same problem and so is 7 + 7x the same as 7x+ 7 i think it is but i'm not sure
BartSMP [9]

Answer:

it is

Step-by-step explanation:

because it addition it doesn't matter which way you put it

6 0
1 year ago
Read 2 more answers
Find the domain of the function. (Enter your answer using interval notation.)
Andreas93 [3]

Answer:

(-\infty,-9)\cup(-9,\infty)

Step-by-step explanation:

The domain of a rational function is all real numbers <em>except </em>for when the denominator equals 0.

So, to find the domain restrictions, set the denominator to 0 and solve for x.

We have the rational function:

s(y)=\frac{7y}{y+9}

Set the denominator to 0:

y+9=0

Subtract 9:

y\neq-9

So, the domain is all real numbers except for -9.

In other words, our domain is all values to the left of negative 9 and to the right of negative 9.

In interval notation, this is:

(-\infty,-9)\cup(-9,\infty)

And we're done :)

4 0
3 years ago
Which of the following choices describe the bases of a cylinder
shtirl [24]
You have not provided the choices, therefore, I cannot give exact answers.
However, I will try to help you out with some information.

A cylinder is a three-dimensional geometric solid.
It has the same shape as a soda can.

<u>As for the bases, they have the following properties:</u>
1- the bases have a circular (disc) shape
2- the bases are congruent to each other
3- the bases are parallel to each other

Hope this helps :)


8 0
3 years ago
Read 2 more answers
What is the length of segment QR? (Show all work)
vazorg [7]
So if QR and PQ are the same ( which they are bc the angles and other sides are the same) 3n-1= 5n-7 so -1= 2n -7 so 6 = 2n so n = 3 then QR is 5n -7 so 5 x 3 is 15-7 is 8 so the answer is 8. Hope this helps :)
3 0
3 years ago
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