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3 years ago

Find area,of the triangle digits only. I counted the lines, 7 and 12 ÷2. and it was wrong

Mathematics

1 answer:

olga55 [171]3 years ago

4 0

Answer:

33 units²

Step-by-step explanation:

1/2(11 x 6) = 33 units²

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A random sample of 700 home owners in a particular city found 112 home owners who had a swimming pool in their backyard. Find a

vekshin1

Answer: $(13.28\%,\ 18.72\%)$

Step-by-step explanation:

Given : A random sample of 700 home owners in a particular city found 112 home owners who had a swimming pool in their backyard.

i.e. n= 700 and x= 112

Sample proportion : $\hat{p}=\dfrac{x}{n}=\dfrac{112}{700}=0.16$

z-value for 95% confidence interval : $z_c=1.960$

Now, the 95% confidence interval for the true percent of home owners in this city who have a swimming pool in their backyard will be :-

$\hat{p}\pm z_c\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$=0.16\pm (1.96)\sqrt{\dfrac{0.16(1-0.16)}{700}}$

$=0.16\pm (1.96)(0.013856)\\\\\approx 0.16\pm0.0272\\\\ =(0.16-0.0272,\ 0.16+0.0272)=(0.1328,\ 0.1872)=(13.28\%,\ 18.72\%)$

Hence, 95% confidence interval for the true percent of home owners in this city who have a swimming pool in their backyard : $(13.28\%,\ 18.72\%)$

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3 years ago

Julie borrowed 3500 for 3years at a seven and a half simple interest rate how much interest rate is that

Alinara [238K]

Answer:

787.50

Step-by-step explanation:

interest=3500*7.5*3/100

interest=35*7.5*3

interest=787.50

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3 years ago

A circle has An area of 36 pi square inches which best represents the circumference of the circle

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Answer:

12pi inches

Step-by-step explanation:

The radius is 6 inches.

the formula for circumference is 2(pi)(r). Plug radius in and get 12pi.

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Find area,of the triangle digits only. I counted the lines, 7 and 12 ÷2. and it was wrong ​

Find area,of the triangle digits only. I counted the lines, 7 and 12 ÷2. and it was wrong