4x - 3 = 9
4x = 9 + 3
4x = 12
x = 3
hope that helps, God bless!
Answer:
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Answer:
221,000,000,000,000,000,000 = 2.21 x 10^20
therefore, the answer is b
Step-by-step explanation:
Answer:
30
Step-by-step explanation:
triangle ABC is proportional to triangle BCD so
hypothenuse of ABC/ ajdacent of ABC = hypotrnus BCD/ ajdacent of BCD
in short
AC/BC = BC/DC
10/x = x/3
10 . 3 = x²
x² = 30
x = √30
so the question mark is 30
