Answer:
60°
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here n = 5 ( pentagon ), thus
sum = 180° × 3 = 540°
let x be the size of the equal angles
Sum the interior angles and equate to 540
(3 × 140 ) + 2x = 540
420 + 2x = 540 ( subtract 240 from both sides )
2x = 120 ( divide both sides by 2 )
x = 60
Thus the size of 1 of the 2 equal angles = 60°
Answer: b/9 + 3 = 7
Step-by-step explanation:
Quotient of 'a number' and 9 is b/9
3 more than that is b/9 + 3
this equals 7, so b/9 + 3 = 7.
Answer: $38
Abeer's phone costs $90.
Abeer currently has $52.
90-52=38
Abeer needs to save $38 more dollars to buy the phone.
Answer:
$29 a day
Step-by-step explanation:
58=2days
<u>2days</u> = <u>58</u>
2 = 2
2days/2=1 day.
58/2=29
$29 for 1 day
Last one:
x^3-2^9=
(x-8)(x^2+64+8x)