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aivan3 [116]
3 years ago
13

What is the arc measure of ABC in degrees? B (20y – 11) (44 +6)/ P (7y - 7) \

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
5 0

Answer:

283 degrees

Step-by-step explanation:

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Michael is looking up at an object. Michael points one arm at the object and
iragen [17]

Answer:

42.6 ft

Step-by-step explanation:

APEX

8 0
3 years ago
In a random sample of 60 shoppers from a large suburban mall, 36 indicated that they had been to a movie in the past month. In a
ZanzabumX [31]

Answer:

There is no enough statistical evidence to reject the hypothesis that the proportion of suburban mall shoppers who had been to a movie in the same month is the same as the proportion downtown.

Step-by-step explanation:

We have to perform an hypothesis test on the difference of proportions to see if there is enough evidence to reject the null hypothesis.

The null and alternative hypothesis are:

H_0: \pi_1-\pi_2=0\\\\H_a: \pi_1-\pi_2\neq0

The significance level is assumed to be α=0.05

The suburban sample has  a proportion of

p_1=36/60=0.6

The downtown sample has a proportion of

p_2=31/50=0.62

The average of proportion is:

p=\frac{n_1p_1+n_2p_2}{n_1+n_2}=\frac{60*0.60+50*0.62}{60+50}=\frac{67}{110}=0.61

The standard deviation of the difference of proportions is:

s_{p1-p2}=\sqrt{\frac{p(1-p)}{n_1} +\frac{p(1-p)}{n_2} } =\sqrt{\frac{0.61*0.39}{60} +\frac{0.61*0.39}{50} }\\\\s_{p1-p2}=\sqrt{0.003965+0.004758}=0.0934

Then, we can calculate the value of the statistic z

z=\frac{p_1-p_2}{s}=\frac{0.60-0.62}{0.0934}=\frac{-0.02}{0.0934} =  0.214

The P-value for this z is:

P(|z|>0.214)=0.83054

The P-value is bigger than the significance level, so there is no enough evidence to reject the null hypothesis.

7 0
2 years ago
Jose is very hungry after doing his math homework he agrees to pay for 2/3 of the pizza that he and Charlie ordered the pizza co
Brilliant_brown [7]
$6.20. 
2/3=.6666666667
Multiple 9.30 by .6666666667 and you will get the 2/3 cost of the pizza. 
6 0
3 years ago
What is the range of the function y = e Superscript 4 x
Alborosie

Answer:

A. Less than zero

Step-by-step explanation:

So If you graph the function,  you'll see that it never actually crosses the y axis into the third or fourth quadrant, the quadrants where all y values become negative.

The answer A is also correct on Edge

Have a great day dude

3 0
3 years ago
Read 2 more answers
Round to the nearest tenth
Verdich [7]

Answer:

17.7

Step-by-step explanation:

a^{2} =29^{2} -23^{2} \\a=\sqrt{312} \\=17.6635

4 0
3 years ago
Read 2 more answers
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