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You apply the sum of interior angles formula ie. (n-2)180. n=number of sides
since a pentagon has 5 sides it will be (5-2)180=540.
now add everything. x-5+x-6+2x-7+x+2x-2=540.
Solve for x: 7x-20=540
7x=540+20
7x=560
x=560/7
x=80
Answer:
i don not know this. but I think
Step-by-step explanation:
$137.5 is left from spending 45% of $250
Answer:
26
Step-by-step explanation:
Let x represent the missing number
Convert both fractions to improper fractions
Cross multiply
Subtract both sides by 1,575
Divide both sides by 15
x = 26