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FromTheMoon [43]
3 years ago
12

What's the complete factorization of 10a^2 - 40a + 30?

Mathematics
1 answer:
geniusboy [140]3 years ago
5 0
Ok first you want to reduce down to get the poly into its smallest form. You can do this by dividing by 10 which leaves you with a^2-4a+3. Now you use regular factoring rules. For this equation you need what multiplies to get +3 and adds to get -4. Which is a -1 and a -3. Now you put it into the blanks to get        10(a-1)(a-3)
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A regression analysis between sales (in $1000) and advertising (in $) resulted in the following least squares line: Y= 32 + 8X.
goblinko [34]

Answer:

Step-by-step explanation: This is a question under linear regression analysis.

The question is trying to relate sales (in $1000) and and advertising.

Both sales and advertising are variables and are connected by the equation

Y = 32x + 8

Which is a linear regression equation of 2 variables.

Where x is the independent variable which represents advertising in this case and Y is the dependent variable which represents sales.

At $1 of adverts, we have $40 of sales.

We just simply put the fact that x = $1 (advertising) into the linear regression equation, we have the value of Y ( sales)

Y = 32(1) + 8

Y = 32 + 8

Y = $40.

3 0
3 years ago
You can work no more than 60 hours each week at your two jobs. Dog walking pays $7 per hour and your sales job at Computers &amp
DedPeter [7]

Answer:

No

Step-by-step explanation:

You cannot work negative 3 hours, it's impossible. One possible solution would be to work 50 hours a week at dog walking for 7 dollars an hour, and 10 hours a week at Computers & More, Inc. for 12 dollars a week. This would give you 350 dollars from dog walking, and 120 dollars from Computers & More, Inc. This would be a total of 470 dollars.

5 0
4 years ago
Read 2 more answers
Helppppppppp meeeeee?/!)/)/7
LenaWriter [7]

Answer:

18 weeks

So we know that she has $1550 dollars, she has a loss of $82.5 dollars every day. It is division (or subtraction to make it easier). She would have her money over $395 dollars for 18 weeks.

Hope this helps!

7 0
2 years ago
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Can someone help me with this question?
Dmitrij [34]
A rhombus would answer your question. Hope this helped sorry if im wrong.
6 0
3 years ago
Round to the nearest thousands of 245,001
tankabanditka [31]
Your answer is 245,000
8 0
3 years ago
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