Answer: 1,885.10
Step-by-step explanation:
I think you just add them all and then round right
Answer:
-2
you need an explanation to submit.
Answer:
x = 9
y = 12
Step-by-step explanation:
-5x + 4y = 3
x = 2y - 15
Manipulate the equations such that the coefficients of two variables are additive inverses
-5x + 4y = 3
x = 2y - 15
Inverse operations
-> 4y - 3 = 5x
-> 2y - 15 = x (*(-5))
->4y - 3 = 5x
-> -10y + 75 = -5x
Now add the equations to eliminate a variable,
4y - 3 = 5x
-10y + 75 = -5x
-6y + 72 = 0
Inverse operations
-6y + 72 = 0
72 = 6y
/6 /6
12 = y
Back solve to find (x)
2y - 15 = x
2(12) - 15 = x
24 - 15 = x
9 = x
I don't know if you know something called PEMDAS
Parentheses
Exponent
Multiply
Divide
Add
Subtract
So you would do the -2(-7) first giving you 14
So now we have -62/12 +14
now you would do -62/12 giving you -5.16666667
and now the equation is -5.16666667 + 14 = 8.83333333
I know for a fact, being in Calculus Honors, that what I did to simplify is correct. Using the Order of Operations, or PEMDAS (Commonly remebered as "Please Excuse My Dear Aunt Sally<span>". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction".) to simplify this answer is necessary.
If your teacher wrote this problem please inform him or her of Order of Operations before your classmates use it even though its wrong.</span>
