4!= 4*3*2*1
Therefore,
2x0+x!= 0+x! = 0+4!
4*3*2*1 = 24 (#1)
-2 pennies, 4 nickels, 4 dimes
-2 pennies, 4 nickels, 3 dimes
-2 pennies, 4 nickels, 2 dimes
And so on. Do you kind of get the idea?
Brother one: x
Brother two: x + 15
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Make them add up to 55 in an equation.
x + (x + 15) = 55
Combine like terms.
2x + 15 = 55
Subtract 15 from both sides.
2x = 40
Divide both sides by 2.
x = 20
Plug 20 for x into brother two.
(20) + 15 = 35
Brother one has saved $20, brother two has saved $35.
Answer:
Given sum of interior angles = 1260. n = 13.
Step-by-step explanation:
Therefore the number of sides = 13.
