Mr. Loureiro simplified the expression 3x + 5(3x + 6) as 18x + 6. Is he
1 answer:
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Answer:
x = -1
Step-by-step explanation:
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<u><em>(Credits: Symbolab)</em></u>
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(Hope this helps can I pls have brainlist (crown)☺️)
Answer:
11
Step-by-step explanation:
The mean is calculated as
mean =
let the third number be x , then
= 15 ( multiply both sides by 3 to clear the fraction )
34 + x = 45 ( subtract 34 from both sides )
x = 11 ← third number