Answer:
length=4 cm
Step-by-step explanation:
Area of rectangle= length * width
48=l*12
length=48/12
length=4 cm
80% of 150
step 1: 80% is a percentage, so you convert that into a decimal(just move it over two places)
step 2: Multiply .80(150)= 120
3/4 of 200
step 1: 3/4 is also 75%
step 2: 75% is a percent, so you change that into .75
step 3: Multiply .75(200)= 150
So 3/4 of 200 is bigger
To solve the problem you must apply the proccedure shown below:
1. You have the following quadratic equation given in the problem:
<span>9x^2+2x-7=0
</span>
2. When you factor it, you obtain:
(9x-7)(x+1)=0
3. Then, you have that the roots of the quadratic equation are:
(9x-7)(x+1)=0
x1=7/9
x2=-1
Answer:
-5,3
Step-by-step explanation:
Answer: after 2 monthly price reductions
Step-by-step explanation:
Given that :
Wholesale cost = $20 each
Markup = 50%
Selling price = $20 + (50% * 20) = $30
After each month selling price reduces by 20%;
Dip in price per month for which item didn't sell ;
Let m = Number of months
$30 - 0.2(30)m = $30 - 6m
After how many monthly price reductions did the price dip below the wholesale cost?
$30 - 6m < $20
-6m < $20 - $30
-6m < - $10
m > 10/6
m > 1.667
m = 2
After 2 monthly price reduction