X = 25 dollar items and y = 15 dollar items
x + y = 72....x = 72 - y
25x + 15y = 1380
25(72 - y) + 15y = 1380
1800 - 25y + 15y = 1380
-25y + 15y = 1380 - 1800
-10y = - 420
y = -420/-10
y = 42
x + y = 72
x + 42 = 72
x = 72 - 42
x = 30
so they sold 30 twenty five dollar items (x) and 42 fifteen dollar items (y)
Answer:
(C) It has 4 congruent angles.
Step-by-step explanation:
A parallelogram is a four sided figure in which opposite sides are equal and parallel.
with is description we ca say that:
- Opposite sides are congruent.
- Diagonals bisect each other.
- Consecutive angles are supplementary.
The consecutive angle add up to 180°. That means that they are supplementary.
The 4 angles are not congruent.
444.44 would be your correct answer
Hope this helps!
~Rain!
Answer:
42$
Step-by-step explanation:
So there's an easy way to know this.
100%--$70
60%--x
<em>cross multiply </em>
100x=4200
÷100 ÷100
______________
x=42
So he saved 42$. Hope this helps :D
Answer:
100•(0.7)3•(1-0.7)5-3
100•0.7•3•0.3•5-3
315-3
312