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professor190 [17]
3 years ago
14

A heron is perched in a tree 50 feet above sea level. Directly below the heron, a pelican is flying 17 feet above sea level. Dir

ectly below the birds is a trout, swimming 23 feet below sea level.
True or False

A. The difference in height between the pelican and the heron is -33 feet.
Mathematics
1 answer:
loris [4]3 years ago
4 0

Answer:

False

Step-by-step explanation:

This is because there both above sea level and 50-17=33 not -33

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A government official is in charge of allocating social programs throughout the city of Vancouver. He will decide where these so
otez555 [7]

Answer: (0.132132, 0.274368)

Step-by-step explanation:

Given : A simple random sample of 123 people living in Gastown and finds that 25 have an annual income that is below the poverty line.

i.e. n= 123

\hat{p}=\dfrac{25}{123}\approx0.203252

Critical value for 95% confidence interval : z_{\alpha/2}=1.96

Confidence interval for population :

\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

i.e. 0.203252\pm (1.96)\sqrt{\dfrac{0.203252(1-0.203252)}{123}}

0.203252\pm (1.96)\sqrt{\dfrac{0.203252(1-0.203252)}{123}}\\\\\0.203252\pm0.071118\\\\=(0.20325-0.071118,\ 0.203252+0.071118)\\\\=(0.132132,\ 0.274368)

Hence, the 95% confidence interval for the true proportion of Gastown residents living below the poverty line : (0.132132, 0.274368)

5 0
3 years ago
Lai ales<br> What is the quotient?<br> +<br> 2y2 - 6y-20<br> 4y+12<br> y2 +5y+<br> 3y2 + 18y+27
vesna_86 [32]

Answer:

here are two possible solutions

Step-by-step explanation:

6 0
3 years ago
Pls help me figure this out
hodyreva [135]

Answer:

C. \frac{27}{225}=\frac{b}{100}

Step-by-step explanation:

To find the number of black ribbons one would have subtract the amount of red ribbons from the total number of ribbons. Then one would have to express it as a proportion. Part over whole equals percent over 100. The number of black ribbons over total ribbons equals "b" over 100.

8 0
2 years ago
Austin earns $9.75 an hour at a part-time job, and earns $12 each time mowing lawns in the neighborhood. They graph the amount o
kaheart [24]

Answer:

$7.25 at part-time job

$9.00 every time lawn mowed  

       so he would get 33.33 day so we will just say 33 times to get 300 dollars if he gets $9 for mowing.  And 41.37  hours to get $300 and he would have to use x and y graph to find the boundary line.

Step-by-step explanation:

4 0
2 years ago
The diameter of a circle is 4 yards. What is the circle's circumference? Use 3.14
UkoKoshka [18]
12.57 because the radius is two
7 0
2 years ago
Read 2 more answers
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