2(8+12)
2(8)+2(12)
that is 16 plus 24 which makes 40
Answer:
-20.2a+5.5
subtract the values with a in it and the ones without the a together.
Answer:
6 miles on the last day
Step-by-step explanation:
Given:
GL = 4x + 1
LO = 6x - 3
GT = 17
TO = 21
To find:
The value of x.
Solution:
By the property of kite:
GL = GT and LO = TO
Take any one pair.
GL = GT
Subtract 1 from both sides.
Divide by 4 on both sides.
The value of x is 4.
9514 1404 393
Answer:
= x + y + 20
Step-by-step explanation:
There are a couple of ways you could write this.
friend sales + your sales
= (14 +x) +(y +6)
= (x +14) +(6 +y) . . . . commutative property used twice
= x +14 +6 +y = x +20 +y
= x + y + 20 . . . . . . . commutative property used again
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first-day sales + second-day sales
= (14 +y) + (x +6)
= (y +14) +(6 +x) . . . . commutative property used twice
= y +14 +6 +x = y +20 +x
= y +x +20 . . . . . . . . commutative property used again
= x + y + 20 . . . . . . . and again
_____
<em>Additional comment</em>
We also used the associative property (to move parentheses) and the properties of addition of integers to simplify the sum. We have chosen to put the variables in lexicographical order, a sort of standard.
