MATHEMATICS HIGH SCHOOL

25 percent off 20 dollars

Answers

Answer 1

Answer:

Answer:

5 dollars

Step-by-step explanation:

25% × 20

= 25/100 × 20

= 5 dollars

____________

hope this helps!

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Answers

Answer: A is the 8-pack, B is the single roll, C is the 100 pack, D is the 50 pack.

Step-by-step explanation:

For each of these, multiply the smaller number by a number that has a product of the bigger number, example D. multiply 25 by 2 to get 50, then compare the totals.

Answer:

the first one is an 8 pack of glue sticks

the second one is 1 tape roll for .19

the third one is 100 pack of pencils for 4.88

the fourth one is a 25 pack of paper clips

Step-by-step explanation:

The expression b/c=b/c is an example of (n)

Answers

equality equaiton
a=a

What is the sum of the polynomials?(8x²-9x²-4x)+(x²-3y²-7x)A. 7x²-6y²+3x
B. 9x²-6y²+3x
C. 9x²-12y²+3x
D. 9x²-12y²-11x

Answers

Answer:

$\sf D. 9x^2-12y^2-11x$

Step-by-step explanation:

$\sf (8x^2-9y^2-4x)+(x^2-3y^2-7x)$

Distribute the negative sign in the first set of parentheses:

$\sf 8x^2 - 9y^2 - 4x + x^2- 3y^2 - 7x$

Combine the terms that are alike:

$\sf 8x^2 +x^2-9y^2-3y^2-4x -7x$

$\sf 9x^2-12y^2-11x$

Therefore, the sum of the polynomials is:

$\sf D. 9x^2-12y^2-11x$

U can begin by simplifying the terms within each set of parentheses first and then combining like terms.

(8x² - 9x² - 4x) + (x² - 3y² - 7x)

= (-x² - 4x) + (x² - 3y² - 7x)

= -x² + x² - 4x - 7x - 3y²

= -11x - 3y²

Therefore, the sum of the polynomials is -11x - 3y², which is option D.

What type of number is - v 81?