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3 years ago

Anthony drew plans for a triangular porch determine if the triangle can be made justify ur repsonse

Mathematics

1 answer:

mojhsa [17]3 years ago

4 0

Can you send angle or side measures by any chance?

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Which of the following situations represents a linear relationship?

dmitriy555 [2]

Answer:

Susie is losing 5 pounds every month on her diet.

Step-by-step explanation:

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3 years ago

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The owner of an auto repair shop studied the waiting times for customers who arrive at the shop for an oil change. The following

labwork [276]

Answer:

(d)0.6

Step-by-step explanation:

(a)Frequency Distribution

$\left|\begin{array}{c|c}$Waiting Time(in Minutes)&$Frequency\\-----------&--\\0-4&4\\5-9&8\\10-14&5\\15-19&2\\20-24&1\\--&--\\Total&20\end{array}\right|$

(b)The relative frequency distribution.

$\left|\begin{array}{c|c}$Waiting Time(in Minutes)&$Relative Frequency\\-----------&--\\0-4&4/20=0.2\\5-9&8/20=0.4\\10-14&5/20=0.25\\15-19&2/20=0.1\\20-24&1/20=0.05\\--&--\\Total&1\end{array}\right|$

(c)The cumulative frequency distribution.

$\left|\begin{array}{c|c|c}$Waiting Time(in Minutes)&$Frequency&$Cumulative Frequency\\-----------&--&---\\0-4&4&4\\5-9&8&12\\10-14&5&17\\15-19&2&19\\20-24&1&20\\--&--&--\\Total&20\end{array}\right|$

(d)The proportion of customers needing an oil change who wait 9 minutes or less.

Proportion of customers needing an oil change who wait 9 minutes or less.

$=\dfrac{12}{20} \\\\=0.6$

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3 years ago

A fireperson needs to use a ladder of 25 feet in length to rescue a cat that has become

svp [43]

Answer:

A, because the cat is only 15 feet in the air and the TREE is 50 feet

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2 years ago

Eight oranges cost $1.00. How much will 5 dozen oranges cost?

kaheart [24]

$dozen=12\ \ \ \ 5*12=60\\\\ 8\ oranges\ cost\ 1\$\\ 60\ oranges\ cost\ x\\\\ make\ proportion:\\ 8-1\\60-x\\\\cross\ multiplication\\\\ 8x=60\ \ \ | divide\ by\ 8\\\\ x=7.5\$\\\\5\ dozens\ cost\ 7.5\$\\\\$

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3 years ago

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A sample of students from an introductory psychology class were polled regarding the number of hours they spent studying for the

Anni [7]

Answer:

$8.68,13.16$

Step-by-step explanation:

Hint- First we have to calculate the mean and standard deviation of the sample and then applying formula for confidence interval we can get the values.

Mean of the sample is,

$\mu=\dfrac{\sum _{i=1}^{24}a_i}{24}=\dfrac{262}{24}=10.92$

Standard deviation of the sample is,

$\sigma =\sqrt{\dfrac{\sum _{i=1}^{24}\left(x_i-10.92\right)^2}{24-1}}=5.6$

The confidence interval will be,

$=\mu \pm Z\dfrac{\sigma}{\sqrt{n}}$

Here,

Z for 95% confidence interval is 1.96, and n is sample size which is 24.

Putting the values,

$=10.92 \pm 1.96\cdot \dfrac{5.6}{\sqrt{24}}$

$=10.92 \pm 2.24$

$=8.68,13.16$

Confidence interval is used to express the degree of uncertainty associated with a sample.

95% confidence interval means that if we used the same sampling method to select different samples and calculate an interval, we would expect the true population parameter to fall within the interval for 95% of the time.

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3 years ago