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a = a + d(n-1)
n 1
this is the formula for the arithmetic sequence.
the first sequence is arithmetic
an=1+7(n-1)
the second sequence is also arithmetic
an=12+4(n-1)
Answer:
q²+11q+30
Step-by-step explanation:
q(q+5)+6(q+6)
q²+5q+6(q+5)
q²+5q+6q+30
q²+11q+30
Answer:
Let x represent one of the equal length sides making the third side which is 3 inches shorter than each of the other two equal to:
Third piece = x
−
3
. Knowing that the whole board is 10 feet, in inches it is:
10 feet × 12 inches
/ 1 foot = 120 inches
To find the length of the pieces, add them and equate it to the legth of the board in inches as shown below:
x + x + x − 3 = 120 + 3
3
x
/3 = 123
/3
x = 41 inches
Third piece = x − 3 =
41 − 3
= 38 inches
Step-by-step explanation:
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