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mylen [45]
2 years ago
9

Chanda is planning to visit universities over the summer to help decide where she

Mathematics
1 answer:
ipn [44]2 years ago
8 0
The dissent was is 39 miles

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If Judy completes a puzzle by herself, it takes her 3 hours. Working with Sal, it only takes them 2 hours.What is the missing va
aliina [53]

Answer:

It means the Judy's rate to complete the puzzle is \frac{1}{3}.

Step-by-step explanation:

If Judy completes a puzzle by herself, it takes her 3 hours.

Working with Sal, it only takes them 2 hours

We have been given the rates of time taken by Judy and Sal to complete a puzzle.

We can see from our given table that Sal's rate is r. We are told that Judy completes a puzzle by herself, it takes her 3 hours. working with Sal, it only takes them 2 hours.

It is given that Judy completes a puzzle by herself, it takes her 3 hours.

so part of puzzle completed by Judy in one hour would be\frac{1}{3}

Therefore, the part of puzzle completed by Judy in one hour is \frac{1}{3}.

8 0
3 years ago
Read 2 more answers
 You buy 3.17 pounds of peaches​, 1.45 pounds of apples​, and 1.85 pounds of oranges. What is your total​ bill?
defon
The ttel is 6.47 (^_-)-☆(•ө•)♡
7 0
3 years ago
There is a mountain with 45 bat caves in a row. Every cave has at least 2 bats and there are 490 bats in all. Any 7 caves in a r
zhannawk [14.2K]

Answer:

12

Step-by-step explanation:

The first cave has 7 times more bats than the last cave.  So if the 45th cave has b bats, then the first cave has 7b bats.

There are 77 bats in every row of 7 caves.  So if there are 7b bats in the first cave, then there are 77−7b bats in caves 2 through 7.

Since there are also 77 bats in caves 2 through 8, that means cave #8 must have 7b bats.  Repeating this logic:

#1 = 7b

#2-#7 = 77−7b

#8 = 7b

#9-#14 = 77−7b

#15 = 7b

#16-21 = 77−7b

#22 = 7b

#23-28 = 77−7b

#29 = 7b

So the first 29 caves have 5(7b) + 4(77−7b) = 308 + 7b bats.

Now we do the same thing from the other end.  If cave #45 has b bats, then caves #39-#44 have 77−b bats.  And since caves #38-44 have 77 bats, then cave #38 has b bats.  Therefore:

#45 = b

#39-44 = 77−b

#38 = b

#32-37 = 77−b

#31 = b

So caves 31 through 45 have 3b + 2(77−b) = 154 + b bats.

Adding that to the first 29 caves, plus x number of bats in cave #30:

308 + 7b + x + 154 + b = 462 + 8b + x

We know this equals 490.

490 = 462 + 8b + x

28 = 8b + x

x is a maximum when b is a minimum, which is b = 2.

28 = 8(2) + x

x = 12

There are at most 12 bats in the 30th cave.

8 0
3 years ago
Rewrite the expression using the
garik1379 [7]

Answer:

Step-by-step explanation:

8 0
2 years ago
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Mia spends 45 min reading each day. She does 2/5 of her reading at school. How many minutes does Mia spend reading at school?
Cerrena [4.2K]
Mia spends 18 minutes reading at school.
3 0
3 years ago
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