2 years ago

Pre college need help with this question

Mathematics

1 answer:

Lady_Fox [76]2 years ago

4 0

Answer:

the domain is {7,-4,1,4,}

the range is {1,-5,2,-7}

Step-by-step explanation:

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20) In a recent poll of 1200 randomly selected adult office workers, 32% said they had worn a Halloween costume to the office at

Allisa [31]

Answer: Option 'c' is correct.

Step-by-step explanation:

Since we have given that

n = 1200

x = 32% of 1200

So, $\hat{p}=32\5=0.32$

We need to find 95% confidence interval.

so, z = 1.96

So, margin of error would be

$z\times \sqrt{\dfrac{p(1-p)}{n}}\\\\=1.96\times \sqrt{\dfrac{0.32\times 0.68}{1200}}\\\\=1.96\times 0.0135=$

So, Interval would be

$\hat{p}\pm \text{margin of error}}\\\\=0.32\pm 0.0263\\\\=(0.32-0.0263,0.32+0.0263)\\\\=(0.2937,0.3463)\\\\=(0.294,0.346)\\\\=(29.4\%,34.6\%)$

Hence, Option 'c' is correct.

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2 years ago

Mr. Paulsen challenges Olivia and Angelica to move figure ABCDE onto figure

alekssr [168]

Answer:

Step-1 : Reflect the original figure around the x-axis.

Step-2 : Slide the new figure 7 units to the right.

8 0

2 years ago

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I need help on this question

Rina8888 [55]

Lower quartile (xL): 20

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2 years ago

Can someone help me find the value of z? ⅔z + 1 = 13

sergey [27]

Answer:

z = 18

Step-by-step explanation:

Given: ⅔z + 1 = 13

Subtract one from both sides: ⅔z = 12

Multiply both sides by the inverse of 2/3, which is 3/2: z = 18

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

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2 years ago

GENIUS OR ANYONE HELP ME PLZ PLZ PLZ!!!!

sukhopar [10]

Answer:

$\frac{16}{4}$ , $\frac{22}{7}$ , $\sqrt{5}$ , $\sqrt{3}$

Step-by-step explanation:

i got it right

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2 years ago

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