PLEASE HELP AND ANSWER BOTH QUESTIONS

Mathematics

2 answers:

kati45 [8]3 years ago

5 0

1.) 16k^2 + 56kj + 49j^2

2.) 4y^2 - 36xy + 81x^2

nydimaria [60]3 years ago

3 0

D is your answer

Expand and do FOIL method (first outside inside last)
simplify and then choose right answer

A is your answer

Do the same thing

hope this helps

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3. Find the value of x that makes a||b. 9x - 44 6x + 10 b A. 18 B. 14.4 15 C. 911 15 D. 6

bazaltina [42]

Answer is A. 18

EXPLANATION-

Its Simplifying
(9x + -44) = (6x + 10)

Reorder the terms:
(-44 + 9x) = (6x + 10)

Remove parenthesis around (-44 + 9x)
-44 + 9x = (6x + 10)

Reorder the terms:
-44 + 9x = (10 + 6x)

Remove parenthesis around (10 + 6x)
-44 + 9x = 10 + 6x

Solving
-44 + 9x = 10 + 6x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-6x' to each side of the equation.
-44 + 9x + -6x = 10 + 6x + -6x

Combine like terms: 9x + -6x = 3x
-44 + 3x = 10 + 6x + -6x

Combine like terms: 6x + -6x = 0
-44 + 3x = 10 + 0
-44 + 3x = 10

Add '44' to each side of the equation.
-44 + 44 + 3x = 10 + 44

Combine like terms: -44 + 44 = 0
0 + 3x = 10 + 44
3x = 10 + 44

Combine like terms: 10 + 44 = 54
3x = 54

Divide each side by '3'.
x = 18

Simplifying
x = 18

7 0

2 years ago

Simplify and rationalize the expression.

alexandr402 [8]

~-2.15139............ hope it helps