The first thing we must do for this case is to define variables.
We have then:
x = number of dimes
y = number of half-dollars
We write the system of equations:
x + y = 36
0.10x + 0.50y = 12
Solving the system we have:
x = 15
y = 21
Answer:
He has 15 dimes
.186915888
that is the answer
if I meant 2.675 divided by .5 it is 5.35
Answer:
Proved
Step-by-step explanation:
Take the Left Hand Side:
Hence Proved!
The following identities were used are attached in an image
Answer:
x = 20,000
p = $40
If the price increase by $1, the demand will decrease by 1000
Step-by-step explanation:
Given:
x = 160 - p
x = number of Robby costumes demanded in thousands
p = price in dollars.
a. How many costumes can be sold at a price of $140?
x = 160 - p
x = 160 - 140
= 20
x = 20,000
20 thousand costumes can be sold at a price of $140
b. What price should be charged if the demand is 120,000 Robby costumes?
x is in thousand
p is in dollars
x = 160 - p
x + p = 160
120 + p = 160
p = 160-120
= 40
p = $40
c. If the price increases by $1.00, by how much does the demand decrease?
x = 160 - p
= 160 - 141
= 19
x= 19,000
If the price increase by $1, the demand will decrease by 1000
Answer:
x = 17
Step-by-step explanation:
(x-3)2 = 7
Divide both sides by two
(<u>x-3)2</u> = <u>7</u>
2 2
x-3= 31/2
x= 31/2-3
x= 1/2 or 0.5
