The Fairbanks,Alaska, a typical January temperature is -13F and a typical April temperature is 30F. What is the difference between these temperatures?

Answers

Answer 1

Answer: The difference between +30 and -13 is 43 degrees.

Answer 2

Answer: t- temperature in January
T-temperature in April

Δ- difference beteween temperature

Δ=T-t
Δ=30F-(-13F)=30F+13F=43F

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PLZ HELP ME and tell me how to get to my answer. What is the mean absolute deviation for the data? 30, 35, 35, 40, 55

A.
5

B.
6.4

C.
6.8

D.
25

Answers

A. 5 because first you find the mean and then add the differences from the mean of the other numbers and divide by the number of numbers and get 5.

Solve the system. x - 3y = -6 and 2x + 3y = -3

Answers

Answer:

1. x = -3y - 6

2. x = (-3y - 3)/2

Step-by-step explanation:

To get x on its own, we have to add 3y to both sides. We have x = -3y - 6. For the next one, we also want to isolate the variable. So we subtract 3y and we end up with 2x = -3y - 3. Then we divide both sides by 2 and we have our answer. I hope this helps because I didn't really understand the question...

Please answer ASAP will mark brainilest

Answers

Answer:

Step-by-step explanation:

Change of Y is 0 and change of x is any number.

0/any number = 0

Notes on isosceles triangles, base angles and notes on the diagonals thanks :D

Answers

Hey,
In isosceles triangles there r two equal sides .
Base angles is usually used for isosceles triangles ....
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The common factors of 28 and 40

Answers

The factors of 28 are 1, 2, 4, 7, 14, and 28.

The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40.

The common factors are 1, 2, and 4.

A store has a sale on books. The price is $17.55 for one book, $16.70 each for 2 books, $15.85 each for 3 books, and $15 each for 4 books. If this pattern continues, how much per book will it cost to buy 7 books

Answers

The cost for each book will be $\boxed{\$ 12.45}$ if the person buy 7 books.

Further explanation:

The arithmetic sequence can be expressed as follows,

${a_1}, {a_2}, {a_3}$ ......

Here, $a{\text{ or }}{a_1}$ represents the first term, ${a_2}$ represents the second term, and so on.

The common difference “d” can be obtained as follows,

$\boxed{d = {a_2} - {a_1}}$

The nth term can be obtained as follows,

$\boxed{{a_n} = a + \left( {n - 1} \right)d}$

Explanation:

The cost of a book is $\$ 17.55.$

The cost of a book is $\$ 16.70$ if the person buys 2 books.

The cost of a book is $\$ 15.85$ if the person buys 3 books.

The cost of a book is $\$ 15.00$ if the person buys 4 books.

The sequence is $\$ 17.55, \$ 16.70, \$ 15.85, \$ 15.00.$

The first term is $\$ 17.55,$ the second term is $\$ 16.70.$

The common difference “d” can be obtained as follows,

$\begin{aligned}d&={a_2} - {a_1}\n&=16.70 - 17.55\n&=- 0.85\n\end{aligned}$

The cost for each book if the person buys 7 books can be obtained as follows,

$\begin{aligned}{a_6}&= 17.55 + \left( {7 - 1} \right)\left( { - 0.85} \right)\n&= 17.55 + 6\left({ - 0.85} \right)\n&= 17.55 - 5.1\n&=\$12.45\n\end{aligned}$

The cost for each book will be $\boxed{\$ 12.45}$ if the person buy 7 books.

Learn more:

1. Learn more about inverse of the functionbrainly.com/question/1632445.

2. Learn more about equation of circle brainly.com/question/1506955.

3. Learn more about range and domain of the function brainly.com/question/3412497

Answer details:

Grade: Middle School

Subject: Mathematics

Chapter: Arithmetic Sequence

Keywords: Store, books, price, $17.55, 2 books, 3 books each cost $16.40, pattern continues, cost, 7 books.

1 book is 17.55
2 books is 16.70
3 books is 15.85
4 books is 15
5 books is 4.15
6 books is 4.30
7 books is (3.55)

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