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Bad White [126]
3 years ago
13

BRAINLIEST GOES TO FIRST CORRECT ANSWER, NO STEPS NEEDED

Mathematics
2 answers:
pochemuha3 years ago
6 0

Answer:

b) -4

Step-by-step explanation:

The roots are (1-sqrt5)  and (1+sqrt(5)

FOIL

first:1*1 =1

outer: 1 * sqrt(5) = sqrt(5)

inner -1*sqrt(5) = -sqrt(5)

last sqrt(5) * - sqrt(5) = -5

Add them together: 1+sqrt(5) - sqrt(5) -5  = -4

azamat3 years ago
4 0

Answer:

Its option B -4

Step-by-step explanation:


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Jonny has 16 bottles of dish soap. Why does he have so many bottles of dish soap?
____ [38]

Answer:

Possible answers

  • A lot of dishes he has to do
  • He selling it
  • He has no shampoo or body wash so washes up with dish soap
  • Pranking someone with it

I dont know <:)

Step-by-step explanation:

6 0
3 years ago
What is the arithmetic sequence in this problem . help plz
adell [148]

Answer:

<u>a(n)=80*(9/10)^(n-1)</u>

Step-by-step explanation:

I think u r confused

this sequence is geometric not arithmetic

HOw we know that ??

when we get a common difference  <u>that must Be equal  </u>

d=72-80=-8  not equal to  d=64.8-72=-7.2

So it is not arithmetic

but when we get the common ratio that also must <u>be equal </u>

r=72/80=9/10 equal to   r=64.8/72=9/10

So it is geometric

By using this equation:

a(n)=a*r^(n-1)

and we have <u>a=80 , r=9/10</u>

Then       <u>a(n)=80*(9/10)^(n-1)</u>

<em>I really hope this helps <3</em>

6 0
3 years ago
The administration at Pierce College conducted a survey to determine the proportion of students who ride a bike to campus. Of th
8_murik_8 [283]

Answer:

The correct option is (D).

Step-by-step explanation:

To construct the (1 - <em>α</em>)% confidence interval for population proportion the distribution of proportions must be approximated by the normal distribution.

A Normal approximation to binomial can be applied to approximate the distribution of proportion <em>p</em>, if the following conditions are satisfied:

  • n\hat p \geq 10
  • n ( 1 - \hat p) \geq 10

In this case <em>p</em> is defined as the proportions of students who ride a bike to campus.

A sample of <em>n</em> = 125 students are selected. Of these 125 students <em>X</em> = 6 ride a bike to campus.

Compute the sample proportion as follows:

\hat p=\frac{X}{n}=\frac{6}{125}=0.048

Check whether the conditions of Normal approximation are satisfied:

n\hat p =125\times 0.048=610

Since n\hat p, the Normal approximation to Binomial cannot be applied.

Thus, the confidence interval cannot be used to estimate the proportion of all students who ride a bike to campus.

Thus, the correct option is (D).

6 0
3 years ago
When = 3, what will the value for y be for the equation - 4x + 5y = 18?
gayaneshka [121]

If x equals 3 then y must equal 1.2

6 0
3 years ago
Read 2 more answers
What is the Largest prime factor of 2²+3²+5² ?
uranmaximum [27]

It looks like  19  would be.

I don't know any slick way to find it, other than just slugging it out.
4 0
3 years ago
Read 2 more answers
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