Evaluate the expression 2x+ y when x = 3. y=1.
2 answers:
Answer:
Step-by-step explanation:
We are given the expression
and asked to evaluate when x=3 and y=1. Therefore, we must substitute 3 in for x and 1 in for y.
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.
Multiply 2 and 3.
Add 1 and 6.
The expression 2x+y evaluated at x=3 and y=1 is equal to 7.
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Answer:
Step-by-step explanation:
We require 2 equations with the repeating digits (63) placed after the decimal point.
let x = 0.636363..... (1) multiply both sides by 100
100x = 63.6363... (2)
Subtract (1) from (2) thus eliminating the repeating digits
99x = 63 ( divide both sides by 99 )
x = =
← in simplest form
Answer:
Javier's parents set aside $1500 when he was born
Step-by-step explanation:
This is a simple interest problem.
The simple interest formula is given by:
In which E is the interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
In this question, we have that:
We have to find P. So
Javier's parents set aside $1500 when he was born