Answer:
It is 68.2, thats the answer
Step-by-step explanation:
If you want no rounded just the main number it is 68
The equation is (0.75)9 + c = 20.
<h2>Linear system</h2>
It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.
<h3>Simplification</h3>
Simplification is to make something easier to do or understand and to make something less complicated.
Given
Jimmy is selling used books at a yard sale.
A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill.
<h3>To find </h3>
The equation.
<h3>How to find the equation?</h3>
A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill.
Let c be the profit.
Profit = Selling price - cost price
c = 20 - (0.75)9
On simplifying, we get
(0.75)9 + c = 20
So the equation is (0.75)9 + c = 20.
More about the linear system link is given below.
brainly.com/question/20379472
563/.4 is equal to 1,407.5
1.32/12=unit price of one egg=.11
.99-.11=.88
They would make an 88 cent profit.
Answer:
(x2+3) • (x2+9)
Step-by-step explanation:
Factoring 
The first term is, 
its coefficient is 1 .
The middle term is, 
its coefficient is 12 .
The last term, "the constant", is +27
Step-1 : Multiply the coefficient of the first term by the constant 1 • 27 = 27
Step-2 : Find two factors of 27 whose sum equals the coefficient of the middle term, which is 12 .
27 + 1 = 28
9 + 3 = 12 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -9 and -3
x4 + 9x2 + 3x2 + 27
Step-4 : Add up the first 2 terms, pulling out like factors :
x2 • (x2+9)
Add up the last 2 terms, pulling out common factors :
3 • (x2+9)
Step-5 : Add up the four terms of step 4 :
(x2+3) • (x2+9)
