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3 years ago

Could someone help I’ll MARK BRAINLIEST

Mathematics

1 answer:

AveGali [126]3 years ago

5 0

Answer:

x < 0

Step-by-step explanation:

If you look at the values of y, they get bigger ( less negative) when x is negative, when x is positive they get smaller

The function is increasing when x<0

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Pls answer I give brainliest

Oksanka [162]

Answer:

179.168

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Please help me prove this theorem thing. I'll give yuh mind kisses <3 have a good day luvlies

lesantik [10]

Answer:

∠ 1 = 20 x + 5

∠ 2 = 24 x - 1

If lines l and m are parallel:

∠ 1 + ∠ 2 = 180°

20 x + 5 + 24 x - 1 = 180

44 x + 4 = 180

44 x = 180 - 4

44 x = 176

x = 176 : 44

x = 4°

Your welcome again :)

Step-by-step explanation:

6 0

3 years ago

On Friday night 225 people saw the dinosaur exhibit at the museum this amount represents 20% of the people who visited the museu

Igoryamba

20 % = 225
1% = 225 / 20
100% = 225 * 100 / 20
= 1125 answer

8 0

3 years ago

The ratio of the number of peas Julia had to the number of peas Vlada had was 3:2. After Julia gave Vlada 15 peas, she still had

inn [45]

J:V = 3:2

3:2 x 40 = 120:80

J: 120-15 = 105
V: 80+15 = 95

J:V is now 105:95

The original amount of peas that Julia had at first was 120.

3 0

3 years ago

Read 2 more answers

Based on historical data in Oxnard college, we believe that 37% of freshmen do not visit their counselors regularly. For this ye

slega [8]

Answer:

A sample size of 1031 is required.

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 level of $1-\alpha$ , 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 of:

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

37% of freshmen do not visit their counselors regularly.

This means that $\pi = 0.37$

98% confidence level

So $\alpha = 0.02$ , z is the value of Z that has a pvalue of $1 - \frac{0.02}{2} = 0.99$ , so $Z = 2.327$ .

You would like to be 98% confident that your estimate is within 3.5% of the true population proportion. How large of a sample size is required?

A sample size of n is required.

n is found when M = 0.035. So

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

$0.035 = 2.327\sqrt{\frac{0.37*0.63}{n}}$

$0.035\sqrt{n} = 2.327\sqrt{0.37*0.63}$

$\sqrt{n} = \frac{2.327\sqrt{0.37*0.63}}{0.035}$

$(\sqrt{n})^2 = (\frac{2.327\sqrt{0.37*0.63}}{0.035})^2$

$n = 1030.4$

Rounding up:

A sample size of 1031 is required.

4 0

3 years ago