Answer:
Step-by-step explanation:
Given
Required
Determine the road grade
This is calculated as:
--- approximated
"Per" means "divided by", so "cost per ounce" means "cost"/"ounces".
The difference in cost per ounce is
.. (1.14/12) -(1.28/16) = .095 -.08 = 0.015
Brand X costs 1.5¢ more per ounce than Brand Y.
Step-by-step explanation:
Let the two numbers be x and y
x+y =5 ---1
x-y =-3 ---2
Rearrange equation 1
x =5-y
Substitute x in the second equation
(5-y)-y =-3
5-y-y =-3
5-2y =-3
Collect like terms
5+3 = 2y
8 = 2y
Divide both sides by the coefficient of y (2)
8/2 = 2y/2
4 = y
y= 4
Substitute y in equation 1
x+4 =5
Subtract 4 from both sides
x+4-4 = 5-4
x+0 = 1
x= 1
The two numbers are 1 and 4
What do you mean? i don’t quite get this question
Answer:
D is the correct one
Step-by-step explanation:
The whole angle equals 72 and the partial angle equals 45
You put
72-45= 27
So 3x=27
Then you solve this equation
3x = 27
x = 27/3
x = 9
Step-by-step explanation:
