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Dennis_Churaev [7]
3 years ago
15

Can I get help plz? it's about simplifying expressions by combining like terms​

Mathematics
1 answer:
lbvjy [14]3 years ago
3 0

Answer:

19. 16x-4 ; 20. 10y+1

Step-by-Step explanation:

19. The perimeter of a rectangle is expressed as P= 2(side1) + 2(side2)

If side1= x-3 and side2= 7x+1

P=2(x-3) + 2(7x+1)

=(2x-6) + (14x+2)

P=16x-4

or

P=4(4x-1)

20. The perimeter of a triangle is expressed by adding all three sides together.

If side1=3y+5 side2=y-4 side3=6y

P=(3y+5)+(y-4)+(6y)

P=10y+1

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Please help thank you​
nikdorinn [45]

Answer:

See explanation

Step-by-step explanation:

(x^2+9x+10)(x-2)= \\\\x^3-2x^2+9x^2-18x+10x-20= \\\\x^3+7x^2-8x-20

Jimmy is incorrect.

Using long division, you can find that the real answer.

First, subtract x^2(x-2) from the original expression, leaving you with 9x^2+2x-40.

Next, subtract 9x(x-2) from the expression, leaving you with 20x-40. Finally, subtract 20(x-2) from the expression, leaving you with a remainder of 0. This means that the real quotient is x^2+9x+20. Hope this helps!

6 0
3 years ago
How to simplify 2 and 1 over 4 =
notsponge [240]
2 1/4 is already simplified but to make it into a mixed number the answer is 9/4
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3 years ago
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The sides of a square or rectangle
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If a certain number of Grade IV students share 28 or 39 skill books in Mathematics,there are remainders of 4 and 3 books. What i
nadya68 [22]

Answer:

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Step-by-step explanation:

<u>Below numbers are divisible by the number of students:</u>

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The largest possible number of students is 12

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