Answer:
<h3>
97, 485 and 197</h3>
Step-by-step explanation:
x - the first number
One number is 5 times a first number:
5x - "one" number (the second number)
A third number is 100 more than the first number:
x + 100 - the third number
x + 5x + x+100 - the sum of the three numbers
x + 5x + x+100 = 779
-100 -100
7x = 679
÷7 ÷7
x = 97
5x = 5•97 = 485
x+100 = 97 + 100 = 197
Check:
97 + 485 + 197 = 779
Answer:
72
Step-by-step explanation:
a-3(b) where a=6 and b=-4
6-3(-4)
6(12)
= 72
Answer:
b. 22, 28, 34, 40
Step-by-step explanation:
This is the only sequence with a common difference, hence the only arithmetic sequence: 22, 28, 34, 40 (common difference of 6).
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When adjacent terms of the sequence have the same <em>difference</em>, the sequence is <em>arithmetic</em>. When adjacent terms have the same <em>ratio</em>, the sequence is <em>geometric</em>. (Only a non-zero constant sequence will be both.)
