Answer:
Number of cheaper dresses sold is 35
Number of expensive dresses sold is 15
Step-by-step explanation:
Given:
Cost of cheaper dresses = $90
Cost of expensive dresses = $140
Total cost of the dresses = $5250
To Find:
Number of cheaper dress = ?
Number of expensive dress = ?
Solution:
Let
The number of cheaper dresses be x
The number of expensive dresses be y
(Number of cheaper dresses X cost of cheap dress) + (Number of Expensive dresses X cost of expensive dress) = $5250
= $5250
It is given that the 20 more of the cheaper dresses than the expensive dresses is sold
So,
number of cheaper dress = 20 + number of expensive dress
x = 20 + y---------------------------------------(1)
y = 15
Substituting y in (1)
x = 20 +15
x= 35
Answer:
f(x) = x^2 is a classic example
f( 3 ) = 9 and
f( -3 ) = 9, but
f^(-1)[9] is undefined because the result can be 3 and -3
X= (85+92+88+98)/4
The slash means to divide. So you’re making a fraction with all the scores on top and the number of scores on the bottom.
Heyyyyy, lets gather the required information....
Summer = 20 movies Fall = 5 , our equation would be:
F = S/4*1
The property used is: Multiplicative identity
Step-by-step explanation:
We need to identify the property in the equation : 
The property used is: Multiplicative identity
Multiplicative identity
The multiplicative identity property is defined as if you multiply a number by 1, the result of multiplication is that original number.
In the given expression -3 is multiplied by 1 to get -3 so, multiplicative identity.
Keywords: Properties of Multiplication
Learn more about Properties of Multiplication at:
#learnwithBrainly
