Area=legnth times width
legnth=30 and 1/2
width=20
area=30 and 1/2 times 20
area=(30+1/2) times 20
distribute
area=20 times 30+20 times 1/2
area=600+10
area=610
area= 610 m^2
perimiter=legnth +width+legnth+width
perimiter=2legnth+2width
width=6 and 1/2
legnth=10
perimiter=2(10)+2(6 and 1/2)
perimiter=20+13
perimiter=33cm
1. area=610 m^2
2. perimiter=33cm
The formula for a right triangle is: ab/ 2
The formula for a parallelogram is: bh
Answer:
The price of the cell phone without the coupon= $500
Step-by-step explanation:
Step 1: Express discounted amount
The discounted amount can be expressed as a function of the original cost of the phone as follows;
D=r×A
where;
D=discounted amount
r=coupon rate
A=original price of the cell phone before the coupon
In our case;
r=45%=45/100=0.45
A=a
replacing;
Discounted amount=(0.45×a)=0.45 a
Step 2: Amount she pays up
Amount she pays=Original cost of cell phone-discounted amount
where;
Amount she pays= $275
original cost of cell phone=a
discounted amount=0.45 a
replacing;
$275=a-0.45 a
0.55 a=275
a=275/0.55
a=500
The price of the cell phone without the coupon= $500
