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2 years ago

Need help this work is due soon

Mathematics

2 answers:

Ksju [112]2 years ago

6 0

Answer:

can you explain this so I can help you with this

Julli [10]2 years ago

3 0

A, b, d I have to type random stuff apparently for it to be 20 characters lol. but lmk if I helped or not :)

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Describe the graph of x ≤ −2

Len [333]

<h3>I hope it is helpful for you </h3>

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3 years ago

Daniel earns a commission of 3% on every home he sells. Recently, Daniel

Leokris [45]

Answer:

The answer in 180000 * 3 ÷ 100 = 5400$

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3 years ago

HELP PLEASEEEE!!! First correct answer gets brainliest!

RUDIKE [14]

Answer:

It is a solution

Step-by-step explanation:

y = -4x - 8

Let x = -9 and y = 28

Substitute these values in

28 = -4(-9) -8

28 = 36 -8

28 =28

This is true so it is a solution

5 0

3 years ago

Given the figure below, find the values of x and z

Ratling [72]

$(13x-85)^o=97^o\\\\13x-85=97\ \ \ |+85\\\\13x=182\ \ \ |:13\\\\x=14$

$z^o+97^o=180^o\ \ \ |-97^o\\\\z^o=83^o$

Answer: x = 14; z = 83

4 0

3 years ago

A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Portland. The stu

iVinArrow [24]

Answer:

$-0.061 < P_1 -P_2< 0.025$

Step-by-step explanation:

Give data:

$n_1 = 350$

$n_2 =250$

$x_1 = 23$

$x_2 = 21$

$\hat{P} 1 = \frac{x_1}{n_1} = \frac{23}{350} = 0.066$

$\hat{P} 2 = \frac{x_2}{n_2} = \frac{21}{250} = 0.084$

for 95% confidence interval

$\alpha = 1 - 0.95 = 0.05 and \alpha/2 = 0.025$

$z_{\alpha/2} = 1.96$ from standard z- table

confidence interval for P_1 and P_2 is

$\hat{P} 1 - \hat{P} 2 \pm z_{\alpja/2} \sqrt{\frac{\hat{P} 1(1-\hat{P} 1)}{n_1} +\frac{\hat{P} 2(1-\hat{P} 2)}{n_2}}$

$(0.066 - 0.084) \pm 1.96 \sqrt{\frac{0.066(1-0.066)}{350} +\frac{0.084(1-0.084)}{250}}$

$-0.018 \pm 0.043$

confidence interval is

$-0.018 - 0.043 < P_1 -P_2$

$-0.061 < P_1 -P_2< 0.025$

7 0

2 years ago