PEMDAS (order of operations rules) require that we perform operations in a certain order: anything inside parentheses first, followed by any exponentiation, followed by mult. and div., finally followed by addition and subtraction.
Thus, we must evaluate 5+8÷4-1 first, as it's inside parentheses. Focusing on the division first, we get 5+8÷4-1 = 5 + 2 - 1, or 6.
Then we have 5 - [6], which comes out to -1.
Answer:
1/2
Step-by-step explanation:
p(-2) = 2 | -1/2(-2) |
= 2 | -1/-4|
= 2 |1/4|
= 1/2
Answer:
<em>* Substation :</em>
Subtract y from both sides of the equation.
x=6−y
x−y=4
Replace all occurrences of x with 6−y in each equation.
6−2y=4
x=6−y
Solve for y in the first equation.
y=1
x=6−y
Replace all occurrences of y with 1 in each equation.
x=5
y=1
The solution to the system is the complete set of ordered pairs that are valid solutions. (5,1)
The result can be shown in multiple forms. Point Form: (5,1)
Equation Form: x=5,y=1
<em>* Elimination :</em>
Multiply each equation by the value that makes the coefficients of x opposite.
x+y=6
(−1)⋅(x−y)=(−1)(4)
Simplify.
x+y=6
−x+y=−4
Add the two equations together to eliminate x from the system.
(x+y=6) + (−x+y=−4) = (2y=2)
Divide each term by 2 and simplify.
y=1
Substitute the value found for y into one of the original equations, then solve for x.
x=5
The solution to the independent system of equations can be represented as a point.
(5,1)
The result can be shown in multiple forms. Point Form:(5,1)
Equation Form: x=5,y=1
Step-by-step explanation:
<em>* Graph</em>
Move the decimal point to the right (add a zero), therefore, 825,740
Hello from MrBillDoesMath!
Answer:
-17 or 32, depending upon the value of the symbol before "11".
First answer (-17) if symbol interpreted as +; second answer (32) if symbol interpreted as "/"
Discussion:
The equation you wrote uses a division sign. The original, I believe, uses a plus sign instead. Not sure which one to use so let's solve both of them.
Interpretation 1:
2 (4^2 + 3) - 66 + 11 =
2( 16+3) - 66 + 11 =
2(19) -66 + 11 =
38 -66 + 11 =
= -17
Interpretation 2:
2 (4^2 + 3) - 66 \ 11 = => order of operation, "\" before "
2(19) - 6 =
38 - 6 =
32
Thank you,
MrB