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2 years ago

6

Please I need help I don’t understand this!

1 answer:

Alex_Xolod [135]2 years ago

8 0

When reflected across the y axis, the x coordinate becomes the opposite but the y coordinate stays the same, so N is (2, -5)
when reflected across the x axis, the y coordinate becomes the opposite but the x coordinate stays the same, so R is (2, 5)

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From an industrial area 70 companies were selected at random and 45 of them were panning for expansion next year. Find 95% confi

Lana71 [14]

Answer:

Confidence limit = [52.8%, 75.2%]

Step-by-step explanation:

$P=\frac{45}{70}= 0.64$

$(1-P)=1-0.64=0.36$

$n= 70$

$P$ ± $z$ $\sqrt{\frac{P(1-P)}{n} }$

where the value $z$ will be taken from the z-table for 95% confidence interval

1-0.95= 0.05/2= 0.025

0.95+0.025= 0.0975

From the z-table the value of $z$ corresponding to 0.0975 is 1.96

$0.64$ ± $1.96$ $\sqrt{\frac{0.64*0.36}{70} }$

$0.64$ ± $1.96$ $(0.057)$

$0.64$ ± $0.112$

$64%$ % ± $11.2$ %

so the confidence interval is

$64+11.2=75.2$ %

$64-11.2=52.8$ %

$[52.8, 75.2]$

8 0

2 years ago

This is hard help is needed

SOVA2 [1]

You have to graph the first one so you would do total cost=1.25*lb

6 0

2 years ago

What are the zeros of this function?

Marina86 [1]

Where is the function?

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2 years ago

1<br> Looking at the angle relationship below, what is the value of x?<br> 1<br> .<br> 45°

Andre45 [30]

Answer:

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Step-by-step explanation:

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8 0

2 years ago

Ashley is choosing a popsicle from the freezer at random the probability of her picking a grape popsicle is 3/8 the probability

netineya [11]

If an experiment has $N$ possible outputs, each with probability

$P_1,\ P_2,\ldots,\ P_N$

then the sum of all probabilities is always one:

$P_1 + P_2 + \ldots + P_N=1$

So, in your case, you have

$P(\text{grape}) + P(\text{cherry}) + P(\text{orange}) = 1$

plugging in the given values:

$\dfrac{3}{8} + \dfrac{1}{3} + P(\text{orange}) = 1 \iff \dfrac{17}{24} + P(\text{orange}) = 1$

we can deduce that

$P(\text{orange}) = 1-\dfrac{17}{24} = \dfrac{7}{24}$

8 0

3 years ago