Answer:
Total amount spent by Mrs. Johnson : T(x) = 25x + 15x
Step-by-step explanation:
Cost of each pencil = 25 cents
Cost of each eraser = 15 cents
x is the number of students in the class.
So, total cost of erasers purchased= 15x
and total cost of pencils purchased = 25x
Hence, Mrs, Johnson Spends total amount on eraser and pencil = 25x + 15x
or, total amount spent by Mrs. Johnson: T(x) = 25x + 15x
rational numbers?
Answer:
Step-by-step explanation:
Rational expressions are bascially an expression where one polynomial is divided by another. And a polynomial is a series of terms like ax^b added together, where the exponents, what I labeled as b, need to be positive integers.
Answer:
Length = 25feets
Step-by-step explanation:
Let the length l = x
Width w = x - 10
Perimeter = 80
And Perimeter = 2(l + w)
:- 80 = 2{x + (x - 10)}
80 = 2{x + x - 10}
80 = 2(2x - 10)
80 = 4x - 20
4x = 80 + 20
4x = 100
x = 100/4
x = 25ft
160 * .2 = 32
160 - 32 = 128
b) 3x – 14 + 4x = 30 + 5x
c) 2x + 6 = -x + 10 + 3x – 4
Answer:
A) Any value of x makes the equation true. All real numbers Interval Notation: (−∞,∞)
B) Isolate the variable by dividing each side by factors that don't contain the variable. x = 22
C) Any value of x makes the equation true. All real numbers Interval Notation: ( −∞,∞)
A and C are identities and have infinite solutions, while B is neither, and has one solution.
Step-by-step explanation:
Step-by-step explanation:
-2x+5x-9x+6x=20-4-16
-3x=0
x=0+3=3