Answer:
Each hat is $5
Each mask is $3
Step-by-step explanation:
Hat= x dollars
Mask= y dollars
Now,
3 hats and 4 mask sold = $27
We can write
3x + 4y = 27
Adding the second equation (-1 times 1st equation) gives us;
3x + 6y = 33
-1* (3x + 4y = 27)
3x + 6y = 33
-3x -4y = 27
2y = 6
y = 6/2
***y = 3***
Now we replace y= 3 into 1st equation and solve for x:
3x + 4y = 27
3x + 4(3) = 27
3x + 12 = 27
3x + 15
x = 15/3
***x= 5***
Each hat costs $5
Each mask costs $3
Answer: D. ALL OF THE ABOVE
Step-by-step explanation:
AN INTEGER IS A WHOLE NUMBER THAT IS NOT A FRACTION
Answer:
x^7 + 9x^2 + x + 8
Step-by-step explanation:
Combine like terms
Answer:
Step-by-step explanation:
The conjugate of a radical expression is obtained by changing the sign of the middle term.
The conjugate of 
is simply 
Therefore, to obtain the conjugate of the given expression we simply shall be changing the negative sign to positive;
The conjugate of 
is simply;
Call center A and B offers equal wages.
<h3>what is Equation?</h3>
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side. It demonstrates the equality of the relationship between the expressions printed on the left and right sides LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
The formula for wages = P/t
First, P= 15 dollars
= 1500 cents
time= 1 hour= 60 minutes
then, the unit rate is
=1500/60
= 25 cents/ min
Second, P= 25 cents
time= 1 minutes
then, the unit rate is
=25/1
= 25 cents/ min
Hence, Call center A and B offers equal wages.
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