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Vikki [24]
3 years ago
10

HEEEEEEEEELP PLZZZZZZZZZZ

Mathematics
1 answer:
Ede4ka [16]3 years ago
8 0

Answer:

Step-by-step explanation:

(1). ( - 3, - 1 )

(2). ( - 1, 3 )

(3). ( 2, 0 )

(4). ( 1, 0 )

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Price - $375<br> Discount - 20%<br> Total =
Yanka [14]

Answer: 20

Step-by-step explanation: since i helped can i  have brainlist plesa :D

8 0
2 years ago
A 90% confidence interval for the mean height of students
Westkost [7]

Answer:

ME= \frac{69.397-60.128}{2}= 4.6345 \approx 4.635

And the best answer on this case would be:

b) m = 4.635

Step-by-step explanation:

Let X the random variable of interest and we know that the confidence interval for the population mean \mu is given by this formula:

\bar X \pm t_{\alpha/2} \frac{s}{\sqrt{n}}

The confidence level on this case is 0.9 and the significance \alpha=1-0.9=0.1

The confidence interval calculated on this case is 60.128 \leq \mu \leq 69.397

The margin of error for this confidence interval is given by:

ME =t_{\alpha/2} \frac{s}{\sqrt{n}}

Since the confidence interval is symmetrical we can estimate the margin of error with the following formula:

ME = \frac{Upper -Lower}{2}

Where Upper and Lower represent the bounds for the confidence interval calculated and replacing we got:

ME= \frac{69.397-60.128}{2}= 4.6345 \approx 4.635

And the best answer on this case would be:

b) m = 4.635

4 0
3 years ago
Let u = &lt;-8, -9&gt;. Find 7u. (2 points)
ANEK [815]

Multiplying a vector by a scalar means to multiply each coordinate of the vector by said scalar.

So, we must multiply both entries by 7:

u=(-8, -9)\implies 7u=(-8\cdot 7, -9\cdot 7) = (-56, -63)

4 0
3 years ago
How do I get the out number to 30?
Ne4ueva [31]
Notice the pattern of the out bags. For every person after the first, three more bags are pulled. By continuing this pattern you will eventually find the answer

1=2
2=5
3=8
4=11
5=14
6=17
7=20
8=23
9=26
10=29
11=32

Therefore, you need 11 people to get the job done in one day
5 0
2 years ago
What is the slope intercept of 2y=14-4x
pentagon [3]
7, 14 would be it but you have to divide the whole equation by 2 to get the y alone
4 0
3 years ago
Read 2 more answers
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