Answer:
D = 36 - 4 * 9 *(-2) = 104
Step-by-step explanation:
h
That's 2 that shet 26
x1= -{-6} - 2 that shet 26/6 x2=-{6}+ 2 that shet 26/6
One toothpick is 0.13 inch long, another is 0.33 inch. Which length is greater?
2 answers:
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Answer:
x = 10
Step-by-step explanation:
3x - 9 = 21
add 9 on both sides:
⇒ 3x - 9 + 9 = 21 + 9
⇒ 3x = 30
divide 3 on both sides:
⇒
⇒ x = 10
to check answer, substitute x by 10 on the original equation:
⇒ 3x - 9 = 21
⇒ 3 x 10 - 9 = 21
⇒30 - 9 = 21
⇒ 21 = 21
I believe X equals -10.
