8-the formula to find an exterior angle of a polygon is:
360/n
(n is the number of sides of the polygon)
so the answer is 40
9 - the formula to find an interior angle of polygon is:
so the answer is 135
good luck
So a dime is .10 or 10 cents
a quarter is .25 or 25 cents
12(.10)=$1.2
4(.25)=1
the equations would be
.25(x)
.10(x)
and if you need them combined it would be
.25(x) + .10(x)
:)
Answer:
y=-5/4x+4
Step-by-step explanation:
as long as the slope is the same and you have a different starting point the lines will be parallel.
Step-by-step explanation:
8 = -18y + 2
6 = -18y
y = -18/6
Step-by-step explanation:
x = pounds of cheaper chocolate
y = pounds of more expensive chocolate
30 pounds for $1.10 per pound were sold.
so, the 30 pounds cost
1.1 × 30 = $ 33.00
and then we know
x + y = 30
0.9x + 1.5y = 33
from the first equation we get
x = 30 - y
and we use that in the second equation
0.9×(30 - y) + 1.5y = 33
27 - 0.9y + 1.5y = 33
0.6y = 6
y = 10 pounds
x = 30 - y = 30 - 10 = 20 pounds
anyway, 10 pounds of the $1.50 chocolate was used.