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mr Goodwill [35]
3 years ago
7

Simplify the expression -2 (x + 4 + 5y).

Mathematics
1 answer:
dezoksy [38]3 years ago
5 0

Answer:

-2x-10y-8

Step-by-step explanation:

Rearange terms

-2(x+4+5y)

-2(x+5y+4)

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Write the equation of a line, in slope-intercept form, that has a slope of m=9 and passes through the point (4, 31) .
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Answer:

\sf y=9x-5

Step-by-step explanation:

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A chemist has a solution of 65% pure acid and another solution of 30% pure acid. How many gallons of each will make 350 gallons
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250 of 65% acid

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Thea would like to leave a 15% tip.<br> Her bill was $5.40. How much should<br> she leave?
iogann1982 [59]

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4 years ago
7x2 +11x-6/7x2 - 10x + 3
velikii [3]

Answer:

Final result :

 x + 2

 —————

 x - 1

Step-by-step explanation:

Step-1 : Multiply the coefficient of the first term by the constant   7 • 3 = 21  

Step-2 : Find two factors of  21  whose sum equals the coefficient of the middle term, which is   -10 .

     -21    +    -1    =    -22  

     -7    +    -3    =    -10    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -7  and  -3  

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Step-4 : Add up the first 2 terms, pulling out like factors :

                   7x • (x-1)

             Add up the last 2 terms, pulling out common factors :

                   3 • (x-1)

Step-5 : Add up the four terms of step 4 :

                   (7x-3)  •  (x-1)

            Which is the desired factorization

Please mark brainliest and have a great day!

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3 years ago
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