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alexandr1967 [171]
3 years ago
7

The expression 5(3 + 7) is a sum. product. difference.

Mathematics
1 answer:
maksim [4K]3 years ago
8 0
The answer you want is: Product. 
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On Monday, the water was shut off 3 times for ¼ hours, 2/3 hours, and 1-3/4 hours, respectively. What was the total number of ho
galina1969 [7]

Answer:

2-2/3 hours

Step-by-step explanation:

1/4 + 2/3 + 1-3/4 = 1/4 + 2/3 + 7/4. Use common is 12, so we get 3+8+21/12 = 32/12. Simplify equal 8/3 or 2-2/3 hours!

3 0
2 years ago
Suppose you draw a card from a well-shuffled deck of 52 cards. Find each of the following odds.
garik1379 [7]
1)  number of cards that aren't : number of cards that are 3
we have 48 cards that arent 3 and 4 cards that are. that means that odds are:
12:1 of not drawing 3

2) fallow same logic. its just opposite.
1:12

3) same logic. but there are only 2 black 7 cards which means that odds are:
50:2 or
25:1

4) opposite of previous.
1:25

6 0
3 years ago
Read 2 more answers
100pts: Why was obsidian used to make scalpels?
Margaret [11]

Answer:

Research also confirms that incisions carried out with obsidian produce narrower scars and fewer inflammatory cells. This is because on cellular level, obsidian knife cuts between cells rather than tearing it in case of a steel knife, hence, a sharper cut allows the wound to heal more easily with negligible scarring.

3 0
3 years ago
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A falcon flew 70 miles in 3 hours. What was the speed of the falcon?
Nadusha1986 [10]

Using the given formula speed = distance over time:

Speed = 70 miles / 3 hours

Speed = 23.33 miles per hour

Convert miles per hour to meters per hour:

1 mile = 1609 meters:

23.33 miles x 1690 meters = 37,543.33 meters per hour.


Now convert meters per hour to meters per second:

1 hour = 3600 seconds:

37,543.33 / 3600 = 10.4 meters per second.

4 0
3 years ago
Bob and mark talk about their families.bob says he has three kids, the product of Their age is 72. He gives another clue: the su
drek231 [11]
<span>Bob says he has 3 kids, the product of their age is 72.
So the possible ages of Bob's kids can be taken from the factors of 72

72 = 2 * 2 * 2 * 3 * 3

</span><span>Finally, bob says, my youngest child called justice.
</span>So meaning, Bob has a youngest child. He didn't mention about a twin.

So the possible ages the following:
1, 2, 36 --> sum: 39
1, 4, 18 --> sum: 23
1, 8, 9 --> sum: 18

<span>Once the sum of the ages will be revealed, then the possible ages are mentioned above.</span>
8 0
2 years ago
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