Answer:
x^3+3x^2+9x+27
Step-by-step explanation:
_____
The factoring of the difference of squares is used (twice):
a² -b² = (a -b)(a +b)
The angles of a quadrilateral add to 360, so we can solve for x by adding the 4 angle measures together and setting it equal to 360:
90 + 140 + (x - 10) + (x - 20) = 360
Combine like terms:
230 + 2x - 30 = 360
200 + 2x = 360
200 - (200) + 2x = 360 - (200)
2x = 160
Divide both sides by 2:
2x/(2) = 160/(2)
x = 80
Answer:
9/40
Step-by-step explanation:
To find the price per can, we take the cost and divide by the number of cans
$5.40/24
5.4/24
Since there is a decimal in the numerator, multiply the top and bottom by 10
5.4/24 * 10/10
54/240
Divide the top and bottom by 6
9/40
<span>8 + 3.4 = 3.4 +8
commutative property of addition
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Answer:
y = 15
x = 43
Step-by-step explanation:
x + y = 48
x - 2y = 3
3y = 45
y = 15
x + y = 48
x + 15 = 48
x = 43
