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stepan [7]
3 years ago
13

8. Write the number in expanded form. 674.281

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
8 0

Answer: expanded factor form would be 6 x 100 + 7 x 10 + 4 x 1 + 2 x 0.1 +8 x 0.01 +1 x 0.001

marysya [2.9K]3 years ago
4 0
600+70+4+.2+.08+.001
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What is the value of the discriminant for the quadratic equation -3=-x^2+2x? discriminant =b^2-4ac
Elena L [17]

Answer:

<h2>D = 16</h2>

Step-by-step explanation:

-x^2+2x=-3\qquad\text{add 3 to both sides}\\\\-x^2+2x+3=0\\\\a=-1,\ b=2,\ c=3\\\\\text{Substitute to}\ D=b^2-4ac:\\\\D=2^2-4(-1)(3)=4+12=16

9 0
3 years ago
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find three consecutive numbers such that three times the first number is equal to 9 more than the sum of the other two.
Goryan [66]

Answer:

12, 13, 14

Step-by-step explanation:

Three consecutive numbers means three numbers in a row, so if n is the first number, the second number is one more than  n (which is n+1) and the third number is one more than that (which is n+2)

So three times (3 x) the first number (n) is equal to (=) nine more than (9 +) the sum of the other two ( (n+1) + (n+2) )

3 times n can be written as 3n

So 3n = 9 + (n+1) + (n+2)

3n = 9 + n + 1 + n + 2

3n = 9 + 1 + 2 + n + n

3n = 12 + 2n

Subtract 2n from each side

3n - 2n = 12 + 2n - 2n

1n = 12

n = 12

So the first number is 12, the second number is 12 + 1 (13) and the third number is 12 + 2 (14)

The numbers are 12, 13, 14

Hope this helps :)

6 0
3 years ago
Use long division to convert -45/8 to a decimal.
Olenka [21]
The answer is A. -5.625
7 0
3 years ago
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A population of n ????20 scores has a mean of???????? 15. one score in the population is changed from x ???? 8 to x ???? 28. wha
Dmitry_Shevchenko [17]

20 has been added to the total of scores, so the new mean for the 20 scores will be 20/20 = 1 higher than it was.

The new population mean is 15+1 = 16.

7 0
3 years ago
What is the product? Enter your answer as a fraction, in simplified form, in the box. −4/5⋅10/16
Pie
-40/80 = -1/2
since when you’re multiplying fraction, you multiply the top by the top number and bottom by the bottom number. So -4 • 10 is -40 and 5 • 16 is 80. -40/80, simplified is -1/2.
7 0
3 years ago
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