D. n - 20
n= MIcahs speed, and since Jamaal is traveling 20 miles per hour slower than micah, It would then incorporate the -20 into the expression. hence, n-20.
Hope i helped you bro.
Answer:
Step-by-step explanation:
We get a quotient when division operation is done.
r ÷ 12
Answer:
The dimensions are height=4 inches, width=8 inches and lenght=12 inches.
Step-by-step explanation:
The volumen of a box is:
we don't know the width so let's assume it as x.
that gives us a cuadratic equation:
let's rerrangage it:
∞
we can obtain the value of x using the quadratic formula:
that formula gave us two results:
we have to take te possitive number, so the width is 8 inches and the length is 8+4=12 inches
height=4 inches
width=8 inches
lenght=12 inches
Volume=4*8*12=384 cubic inches.
Answer:
hello your question lacks some information below is the complete question
Suppose you are designing a cardboard box that must have a volume of 27 cubic feet. The cost of the cardboard is $0.15 per square foot. What is the most economical design for the box (one that minimizes the cost), and how much will the material in each box cost?
Answer : Box design , $8.1 ( cost of material in each box)
Step-by-step explanation:
Volume of cardboard box = 27 cubic feet
cost of cardboard = $0.15 square feet
i) The most economical design for the box would be Designing a square box because the dimensions of the box would be = 3 ft
ii) The cost of the material for each box can be calculated as
= surfaces * surface area * cost per square foot
= 6 * 3^2 * $0.15
= $8.1
Answer:
x=all real numbers
Step-by-step explanation:
1. distribute: 5(x+6)-2x=3(x+10)
5x+30-2x=3x+30
2. combine like terms 3x+30=3x=30
3. these are equal therefore x=all real numbers