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Leto [7]
3 years ago
5

NEED HELP!!! Algebra Parents functions

Mathematics
1 answer:
rewona [7]3 years ago
3 0

Answer:

A its conistan when x less than 1 and x when x is larger

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A recent CBS News survey reported that 64% of adults felt the U.S. Treasury should continue making pennies. Suppose we select a
enyata [817]

Complete Question

A recent CBS News survey reported that 64% of adults felt the U.S. Treasury should continue making pennies. Suppose we select a sample of 18 adults.

a-1. How many of the 18 would we expect to indicate that the Treasury should continue making pennies

a-2) What is the standard deviation?

a-3) What is the likelihood that exactly 3 adults would indicate the Treasury should continue making pennies?

Answer:

a-1 \= x = 11 .52

a-2  \sigma  = 2.036

a-3 P(3) =  4.7*10^{-5}

Step-by-step explanation:

From the question we are told that

  The sample size is  n =  18

  The proportion of adult that  felt the U.S. Treasury should continue making pennies is p =  0.64

 The proportion of adult that  feel otherwise is

q = 1- p = 1-0.64 = 0.36

 The mean is mathematically evaluated as

      \= x =  n * p

substituting values

  \= x = 18 * 0.64

   \= x = 11 .52

The standard deviation is mathematically represented as

       \sigma  =  \sqrt{ npq}

substituting values

      \sigma  =  \sqrt{18 * 0.64 * 0.36}

      \sigma  = 2.036

The likelihood that 3 adult would indicate  the Treasury should continue making pennies is mathematically evaluated as

    P(3) = \left  n} \atop  \right. C_3  (p)^{3} * (q)^{n-3}

Now

    \left  n} \atop  \right. C_3 =  \frac{n! }{[n-3] ! 3!}

substituting values

    \left  n} \atop  \right. C_3 =  \frac{18! }{[15] ! 3!}

    \left  n} \atop  \right. C_3 =  \frac{18 * 17 * 16 * 15! }{[15] ! (3 *2 *1 )}

   \left  n} \atop  \right. C_3 =  \frac{18 * 17 * 16 }{ (3 *2 *1 )}

   \left  n} \atop  \right. C_3 =  816    

So

    P(3) =  816 * (0.64 )^3 * (0.36 )^{18-3}

    P(3) =  4.7*10^{-5}

8 0
3 years ago
How can an expression or process be determined for a geometric sequence?
frozen [14]
Examine the given terms of the sequence.  Is every term the same multiple of the previous term?  If so, that multiplier is called the "common ratio,"  r

If "a" is the first term of the sequence, then a_n = (a)(r)^(n-1).
8 0
3 years ago
A 38- ounce bottle of juice drink contains 6 percent water. Than computed 6 percent of 38. His work is shown below.
Dmitrij [34]

Answer:

Step 1 — Add up the common mass terms.

Step 2 — Convert masses to grams.

Step 3 — Convert volume measurements to masses (grams)

Step 4 — Find the total mass of the formula.

Step 5 — Figure out individual percentages.

Step 6 — Double check your figures.

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
If f(x) = 1/6 x-8, then f^-1(x)=
bezimeni [28]

Answer:

f^-1(x) is 6x + 48

f(x) = 1/6x - 8

To find f^-1(x) equate f(x) to y

That's

f(x) = y

y = 1/6x - 8

Next interchange the terms

We have

x = 1/6y - 8

Make y the subject

Multiply through by 6

We have

6x = y - 48

y = 6x + 48

Therefore f^-1(x) is 6x + 48

Hope this helps you

5 0
3 years ago
Suppose that H(x) varies inversely with x and H(x) = 50 when x = 0.25.
liraira [26]
The answer here is 6.25.
I've already worked on this quiz.~
8 0
3 years ago
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