3/5n - 4/5 = 1/5n....multiply everything by 5 to get rid of the fractions
3n - 4 = n
-4 = n - 3n
-4 = -2n
-4/-2 = n
2 = n <==
Your answer would be (A)24
because 80*4=320
so 2240-320=1920
80*24=1920
hope this helped:)
Answer: 32 sides
Step-by-step explanation:
Formula for interior angle of a polygon = ( n - 2 )180°, where n is the number of sides of the polygon
Now equate the formula to 5400°
( n - 2 ) × 180° = 5400°
open bracket by multiply by 180°
180n° - 360° = 5400°
180n° = 5400° + 360°
180n° = 5760
n = ⁵⁷⁶⁰/₁₈₀
n = 32
so the polygon has 32 sides
Answer:
Jake:y
grandma:6y
cousin:y+5
the sum of all their ages:8y+5
Step-by-step explanation:
given Jake:y
His grandma is 6 times his age
so
grandma:6y
His cousin is 5 years older than
him.
so
cousin:y+5
the sum of all their ages is
y+6y+y+5
8y+5
5y - 3y + 12
Because there is not a common factor between the three terms in it's current state, we must simplify.
2y + 12
Now, we can simplify using the distributive property.
Factor 2.
<h3>2(y + 6) is the factored form of the original expression.</h3>
