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3 years ago

Solve for s. 6 − 4s = –8 − 6s s =

Mathematics

2 answers:

Vilka [71]3 years ago

5 0

-4s+6s=-8+6
2s=-2
S=2/-2
S=-1
Ans: s=-1

Vinil7 [7]3 years ago

3 0

Step-by-step explanation:

6 - 4s = - 8 - 6s

Bringing like terms on one side

-4s + 6s = - 8 - 6

2s = - 14

S = - 14/2

S = - 7

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We are studying the proportion of cities that have private garbage collector. We want a maximum error of 0.10 and a 95% confiden

True [87]

Answer:

The minimum number of cities we need to contact is 96.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

Z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

95% confidence interval

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

In this problem, we have that:

$p = 0.5, M = 0.1$

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.1 = 1.96*\sqrt{\frac{0.5*0.5}{n}}$

$0.1\sqrt{n} = 0.98$

$\sqrt{n} = 9.8$

$(\sqrt{n})^{2} = (9.8)^{2}$

$n = 96$

The minimum number of cities we need to contact is 96.

8 0

2 years ago

1 x) = 5x what is (a)? n 17 (1)=-52 ()

Sonbull [250]

Answer:

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Step-by-step explanation:

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2 years ago

F(x) = -4x2 + 4x – 4 Find f(3)

ValentinkaMS [17]

F(3) occurs when x =3. So lets plug 3 into our equation.

$f(3) = -4(3)^2 + 4(3)-4\\f(3) = -4(9) + 12- 4\\f(3) = -36 + 12- 4\\f(3)= -28$

F(3) = -28

I hope this helps! :)

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2 years ago

What is the y-intercept of the line described by the equation below? Y=6x+8

Ahat [919]

y = mx + b

The b is always the y-intercept, so that means

y = mx + b

y = 6x + 8

The answer is C. (0, 8)!

⭐ Please consider brainliest! ⭐

✉️ If any further questions, inbox me! ✉️

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2 years ago

Read 2 more answers

What is 32/36 simplest form?

Readme [11.4K]

Answer:

8/9

Step-by-step explanation:

divide both by 4

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2 years ago