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2 years ago

ALGEBRA 1 HW< please help to give explanations

Mathematics

2 answers:

galben [10]2 years ago

7 0

Please refer the attached pictures.

Hope this helps! :D

Ronch [10]2 years ago

6 0

Answer:

See below

Step-by-step explanation:

11x^2 + x^2 = (4x + 8)(3x - 3)
12x^2 = 12x^2 + 24x - 12x - 24
12x - 24 = 0
12x = 24
x = 2

x/3 - x/9 = 6
3x/9 - x/9 = 6
2x/9 = 6
2x = 54
x = 27

6^(x + 9) = 36^x
6^(x + 9) = 6^(2x)
x + 9 = 2x
2x - x = 9
x = 9

4/9 + 1/a = 2/3
1/a = 2/3 - 4/9
1/a = 6/9 - 4/9
1/a = 2/9
a = 9/2

√x + 3 = 6
x + 3 = 6^2
x = 36 - 3
x = 33

1.2m - 0.2 = 3.8 + m

1.2m - m = 3.8 + 0.2
0.2m = 4
m = 4/0.2
m = 20

(x + 12)^2 = 9
x + 12 = ± 3
x = ± 3 - 12
x = - 9, x = - 15

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