4(x-7) is what i got for my answer
Let us make an equation to solve :
Y=mx+b (general form of a linear equation)
y=10x-20 (x is the number of haircuts,y is the amount she earns)
the minimum amount to carry out all the expenses is $20
so,
20=10x-20
20+20=10x
40=10x
40/10=x
4=x
so she must do 4 haircuts in an hour
Answer:
a = -14
Step-by-step explanation:
We are given

We want to get the variable by itself. First, we can multiply both sides by 5 to get rid of the fraction

Now we can isolate the variable by subtracting 38 from both sides

Answer:
46.67 cubic feet
Step-by-step explanation:
Given :The rectangular base is 35 square feet, with a height of 4 feet.
To Find :What is the volume of the tent?
Solution :
Volume of rectangular base pyramid =
Since we are given that The rectangular base is 35 square feet, i.e. area of rectangular base = l*w = 35 sqaure feet
Height of pyramid h = 4 feet
Putting values in formula
Volume of rectangular base pyramid =
=
=46.67 cubic feet
Thus volume of the tent is 46.67 cubic feet
Answer:
4
Step-by-step explanation:
Simplify x and y by rationalising the denominator of both
To rationalise the denominator multiply the numerator/ denominator by the conjugate of the denominator.
The conjugate of 2 +
is 2 - 
The conjugate of 2 -
is 2 + 
x =
=
= 2 - 
y =
=
= 2 + 
Thus
x + y = 2 -
+ 2 +
= 4