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Feliz [49]
3 years ago
15

Both answers plssss ?????!?

Mathematics
1 answer:
Troyanec [42]3 years ago
7 0

Answer:

4) C

5) C

Step-by-step explanation:

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Simplify 5^2 x 5^9 <br> A. 5^11<br> B. 5^18<br> C. 25^11<br> D. 25^18
Reil [10]

Answer:

a

Step-by-step explanation:

(5^{2} ) * (5^{9}) = 5^{2 + 9}  = 5^{11}

6 0
4 years ago
Read 2 more answers
Please explain your answer
pashok25 [27]

Answer:

127 bags.

Step-by-step explanation:

20 yd x 19 yd = 380 yd.

380 yd / 3 bags = 126.666666667

To round it, 127.

8 0
3 years ago
Which ordered pair (x, y) can be added to the table so that y is still a function of x?
Ymorist [56]

Answer:

B. (3, -2)

Step-by-step explanation:

For the table to still be a function, any added pair should not result into any x-value having different y-values. This is because, for the table to remain a function, no x-value should give different y-values. That is, each x-value must have exactly one y-value.

❌If we add the ordered pair in option A, (6, 4) to the table, y is no longer a function of x, because we would be having an x-value of 6 giving us different y-values of -13 and 4.

✅If we add the ordered pair in option B, (3, -2) to the table, y would remain a function of x, because we would be having each x-value having exactly one y-value.

❌If we add the ordered pair in option C, (0, 4) to the table, y is no longer a function of x, because we would be having an x-value of 0 giving us different y-values of -1 and 4.

❌If we add the ordered pair in option D, (-2, 5) to the table, y is no longer a function of x, because we would be having an x-value of -2 giving us different y-values of 3 and 5.

The answer is B. (3, -2).

8 0
3 years ago
Factor out -2 out of -6x+10
topjm [15]
-2 (3x -5)
..............
5 0
3 years ago
Read 3 more answers
When circuit boards used in the manufacture of compact disc players are tested, the long-run percentage of defectives is 5%. Let
vladimir1956 [14]

Answer:

a) P(X ≤ 2) = 0.87

b)  P(X ≥ 5) = 0.01

c) P(1 ≤ X ≤ 4) = 0.71

d) P ( X = 0 ) = 0.28

e) σ(X) = 1.09 , E(X) = 1.25

Step-by-step explanation:

Given:

- Let X = the number of defective boards in a random sample of size n = 25, so X ~ Bin(25, 0.05)

Where, n = 25 and p = 0.05

Find:

(a) Determine P(X ≤ 2).(b) Determine P(X ≥ 5).(c) Determine P(1 ≤ X ≤ 4).(d) What is the probability that none of the 25 boards is defective?(e) Calculate the expected value and standard deviation of X.

Solution:

- The probability mass function for a binomial distribution is given by:

                         P ( X = x ) = nCr * (p)^r * ( 1 - p )^(n-r)

a) P(X ≤ 2):

                         P(X ≤ 2) = P ( X = 0 ) + P ( X = 1 ) + P ( X = 2 )

                         = (0.95)^25 + 25*0.05*0.95^24 + 25C2*0.05^2*0.95^23

                         = 0.87

b) P(X ≥ 5):

            P(X ≥ 5) = 1 - [P ( X = 0 ) + P ( X = 1 ) + P ( X = 2 ) + P ( X = 3 ) + P(X=4)

            = 1 - [ 0.87 + 25C3*0.05^3*0.95^22 + 25C4*0.05^4*0.95^21]

            = 1 - 0.98994

            = 0.01

c) P(1 ≤ X ≤ 4):

            P(1 ≤ X ≤ 4) = P ( X = 1 ) + P ( X = 2 ) + P ( X = 3 ) + P(X=4)

            = ( 0.87 - 0.95^25) + 0.11994

           = 0.71

d) P( X = 0 )

            P ( X = 0 ) = 0.95^25 = 0.28

e) E(X) & σ(X):

            E(X) = n*p

            E(X) = 25*0.05 = 1.25

            σ(X) = sqrt ( Var (X) )

            σ(X) = sqrt ( n*p*(1-p) ) = sqrt ( 25*0.05*0.95 )

            σ(X) = 1.09

4 0
3 years ago
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