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LuckyWell [14K]
3 years ago
9

Type the integer that makes the following addition sentence true: = 6 39 +

Mathematics
1 answer:
quester [9]3 years ago
8 0

-33

Hope this helps. :)))))

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Two friends Ana and Juan are buying books by joining the History Book
Travka [436]

Answer:

Ana  spent $17  per book on average.

Juan  spent $14.78  per book on average.

y = $15 + 17x--------- equation 1

y= $10 + 14.78 x------------- equation 2

Step-by-step explanation:

Ana has to pay a yearly fee of $15 to join.

She spends a total of $525 for 30 books.

The amount spent on books = Total amount - yearly fee

                                                 = $525- $15= $510

Price per book on the average = $510/30= $ 17

Ana  spent $17  per book on average.

Juan has to pay a yearly fee of $10 to join.

He spends a total of $350 for 23 books.

The amount spent on books = Total amount - yearly fee

                                                 = $350- $10= $340

Price per book on the average = $340/23= $ 14.78≅ $15

Juan  spent $14.78  per book on average.

The function can be established if y gives the total cost and x gives the number of books

y = $15 + 17x--------- equation 1

y= $10 + 14.78 x------------- equation 2

Juan has a better deal because the yearly fee is less also the price per book is less.

8 0
3 years ago
The amount of workers varies inversely with the time, in days, to complete a project. Five workers can complete a certain projec
Feliz [49]

9514 1404 393

Answer:

  8

Step-by-step explanation:

The number of days has gone down by a factor of 15/24. The number of workers is inversely proportional, so must increase by a factor of 24/15 = 8/5.

  (5 workers) × (8/5) = 8 workers

8 workers are needed to complete the project in 15 days.

6 0
2 years ago
When flipping a fair coin 4 times in a row, which outcome is more likely: HTHT or HHHH.
Vlad1618 [11]

Answer:

See below

Step-by-step explanation:

equal probability    each occurs 1 time out of 16 possibilities

tttt

ttth

ttht

tthh

thtt

thth

thhh

httt

htth

thth

<u>htht</u>

hthh

hhtt

hhth

hhht

<u>hhhh</u>

3 0
1 year ago
23. What is the angle of rotation of the following figure?<br><br> 45<br> 180<br> 60<br> 90
MA_775_DIABLO [31]

I believe that it is 45 degrees. i could be wrong, so make sure to check!

5 0
3 years ago
Read 2 more answers
Show all work for full credit. Given: f (x) = -2x + 1, find f (1) x Clear h Undo​
xenn [34]

Answer:

I hope this helps

Step-by-step explanation:

five percent

4 0
2 years ago
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