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nika2105 [10]
3 years ago
12

Which number is written in scientific notation?

Mathematics
1 answer:
Archy [21]3 years ago
8 0

Answer:

4.5X10^-3

Step-by-step explanation:

Scientific notation formula= x.x times 10^x

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A coin purse contains d dimes and q quarters.There are 20 coins in the purse and the total value of the coins is $4.25.which sys
mel-nik [20]
25q + 10d = 425
q + d = 20

First thing's first, picture 4 quarters. Do you know how much these 4 quarters are worth? Obviously, you'd answer one dollar, but take the time to think about how exactly you came up with this answer.

"Well, it's simple," you might think, "Multiply 0.25 by 4."

Similar to this train of thought, the first equation is formulated by doing exactly that. 'q' represents an unknown number of quarters, and 'd' an unknown number of dimes. We use 25q and 10d, because, well, we're multiplying their value by the number of coins. They're equivalent to 425 because the 20 unknown coins make $4.25 (I converted it to cents to get rid of the pesky decimals, but if you want to keep it as dollars that works too).

Because the equation states that there are 20 coins in total, we know that we can make the equation 'q + d = 20' since there are 20 quarters and dimes in total.

Let me know if you need any further explanation :)
-T.B.
3 0
3 years ago
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Find the GCF of the numbers using lists of factors.<br> 27,45<br> 30,48<br> 28,48,64
Svetach [21]

Answer:

1.) 6

2.)6

3,)4

Step-by-step explanation:

I think these are the gcf of the numbers

6 0
3 years ago
Factor 12xy - 36xz<br> a. 12(xy - 3xz)<br> b. 12x(y - 3z)<br> c. -24xyz<br> d. 12(y - 3z)
weqwewe [10]

Answer:

B is the correct answer.

Step-by-step explanation:

12xy - 36xz

12 and x are common factors.

12x(y - 3z)

Hope it helps.

6 0
3 years ago
**50 pts**I mark brainliest**<br><br> M&lt;2=34 degrees. find m&lt;4 and explain how you know.
stira [4]

Answer:

angle 4 = 34 degrees

Step-by-step explanation:

angle 4 is equal to angle 2 because it is an alternate interior angle of 34 degrees.

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A person owes a debt of $10
AleksandrR [38]
So the person is out of pocket of $10.00
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