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Elena-2011 [213]

3 years ago

5

its 0 degrees outside at midnight the temperature of the air drops 20° in the morning hours then gains 3° as soon as the sun com

es up what is the temperature after the Sun comes up

1 answer:

Ber [7]3 years ago

5 0

Answer:

It is -17 degrees.

Step-by-step explanation:

Because:

0 degrees - 20 degrees=-20 degrees

-20 degrees +3 degrees =-17 degrees.

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How do u Solve 2x2 + 2x2 + 2 - 2x2 =

Crank

<span>2x2 + 2x2 + 2 - 2x2 = 4 + 4 +2 -4
= 4+2
= 6</span>

7 0

3 years ago

Read 2 more answers

The first thing you should do in solving a word problem is estimate what you think the answer would be.

Lelu [443]

Answer:

The answer is True.

Step-by-step explanation:

<u>Estimate the Answer Before Solving Having a general idea of a ballpark answer .</u>
<u>Or the problem lets students know if their actual answer is reasonable or not.</u>

6 0

1 year ago

Each year for 3 years, the time it takes you to run a mile decreases by 10 seconds. Find the total change time

hichkok12 [17]

Answer: 109.5

Step-by-step explanation: EACH year for three years would be 1095 if you multiply 365 (each year) by 3 (the amount of years) and then divide that by 10. Im not entirely sure but I hope I helped

7 0

3 years ago

You are traveling at 75 miles per hour on a straight stretch of highway in Nevada. It is noon now. When will you arrive at the n

Levart [38]

Right now it is noon..... you are traveling 75 miles per hour meaning you'll move 75 miles... every hour. so you're 120 miles away so now we need to figure out the time.... to do this we already know 1 hour is 75 miles so now you can subtract one hour 120-75= 45 so 75 per hour, what would 45 be?..... so we can set up a fraction to figure out how long it takes to travel one minute.... so 60/75(the 60 is for minutes in an hour). which is .8 of a second to travel one mile so.... now you can multiply to check your work. .8*75=60 mins.... so now multiply.8*45(miles left)=36 so you'd get there at 1:36 it would take an hour and 36 mins to get to your destination going 75mph

6 0

3 years ago

Listed below are prices in dollars for one night at different hotels in a certain region. Find the range, variance, and standar

Artyom0805 [142]

Answer:

Range = 115$

Standard Deviation = 43.76$

Variance = 1915.142$

Option A) The measures of variation are not very useful because when searching for a room, low prices, location, and good accommodations are more important than the amount of variation in the area.

Step-by-step explanation:

We are given the data for prices in dollars for one night at different hotels in a certain region.

234, 160, 119, 131, 218, 207, 146, 141

Range:

Sorted data: 119, 131, 141, 146, 160, 207, 218, 234

$\text{Range} = 234-119 = 115\$$

Standard Deviation:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1356}{8} = 169.5$

Sum of squares of differences = 4160.25 + 90.25 + 2550.25 + 1482.25 + 2352.25 + 1406.25 + 552.25 + 812.25 = 13406

$\sigma = \sqrt{\dfrac{13406}{7}} = 43.76\$$

Variance =

$\sigma^2 = 1915.142\$$

Measure of variance for someone searching for room:

Option A) The measures of variation are not very useful because when searching for a room, low prices, location, and good accommodations are more important than the amount of variation in the area.

5 0

3 years ago