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My name is Ann [436]
3 years ago
12

on June 30th, the temperature was 85 degrees F. what would the temperature be if it was 4 degrees warmer

Mathematics
1 answer:
34kurt3 years ago
7 0

Answer:

89 ° F

Step-by-step explanation:

The temperature was 85° F

If it becomes 4 degree warmer

The temperature will increase

85 + 4 = 89 ° F

In the temperature scale the higher you go, the warmer it becomes and the lower you go, the cooler it becomes.

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Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard d
Ostrovityanka [42]

The margin of error of the random selection is 0.29

The given parameters are:

n = 320 --- the sample size

\sigma = 2.9 --- the standard deviation

\bar x = 24 --- the mean

\alpha = 90\% --- the confidence level.

The margin of error (E) is calculated as follows:

E = z \times \sqrt{\frac{\sigma^2}{n}}

So, we have:

E = z \times \sqrt{\frac{3.2^2}{320}}

E = z \times \sqrt{\frac{10.24}{320}}

The z-value for 90% confidence level is 1.645.

Substitute 1.645 for z

E = 1.645 \times \sqrt{\frac{10.24}{320}}

E = 1.645 \times \sqrt{0.032}

Take square roots

E = 1.645 \times 0.1789

Multiply

E = 0.2943

Approximate

E = 0.29

Hence, the margin of error is 0.29

Read more about margin of error at:

brainly.com/question/14396648

5 0
2 years ago
Read 2 more answers
The sum of two numbers is 75. The second number is 3 less than twice the first
Mandarinka [93]

Answer:

\large{\textbf{The two numbers are: 26 and 49}.\\}

Step-by-step explanation:

\large{\textup{assume the two numbers are $x$ and $y$.}}\\\large{\textup{The given sentences are written in mathematical terms as follows:}\\$$ x + y =  75  \hspace{25mm} (1)$$ $$ y = 2x - 3 \hspace{25mm} (2) $$  \\\textup{Substituting $(2)$ in $(1)$,}\\\begin{align*} &  \implies x + 2x - 3 = 75  \\& \implies 3x = 78 \\& \implies x = 26\end{align*}\textup{Substituting $x$ in $(1), \hspace{5mm} y = 49$} }

7 0
2 years ago
Which equation represents the data in the table?
gavmur [86]

Answer:

c

Step-by-step explanation:

It all adds up. Ex; 2*2=4   4-3=1

and continues through the rest of the table

8 0
2 years ago
Hello what is the answer this is super urgent thank you PLEASE help
earnstyle [38]
61.26 in^2

Explanation: plug in the formula to get SA=2π1.5^2+2π(1.5)(5)
3 0
2 years ago
CAN SOMEONE PLEASE HELP ME
Dvinal [7]
The answer is D hope this helped
6 0
3 years ago
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