Answer: OPTION D.
Step-by-step explanation:
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The compete exercise is: "James used substitution to solve this system of equations. Which could be the result of his first step</h3><h3>
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Given the sytsem of equations:
1- Solve for one of the variables from any equation and substitute it into the other equation.
2- Solve for the other variable in order to get its value.
3- Substitute this value back into one of the original equations. and find the value of the other variable.
In this case youu can observe that the second equation is already solved for "y", therefore, in order to use the Substitution Method, the first step is: Substitute the second equation into the first one.
Therefore, the equation that could be the result of James' first step is:
Answer:
x=17
Step-by-step explanation:
Since these angles are supplementary, they will add up to 180 degrees, so you can set up the equation like this:
4x+8+104=180
First, combine like terms:
4x+(8+104)=180
4x+112=180
Next, subtract 112 from both sides:
4x+112(-112)=180(-112)
4x=68
Then, divide each side by 4:
4x(/4)=68(/4)
x=17
17 is your answer.
Answer:
A
Step-by-step explanation:
Evaluate 2^3+5x(6+4)÷2 following Order of Operations rules (PEMDAS):
Work within parentheses is done first, followed by exponentiation, and then mult. and div., and finally add'n. and subtr'n.
Thus, 2^3+5x(6+4)÷2 becomes 2^3+5x(10)÷2
8 + 50x/2
8 + 25x
Let's say Ralph can do the chores in h hours, and Jo in 2h. Then:
1/h+1/2h=1/6
6+3=h
h=9
Ralph takes 9 hours working alone; Jo takes 18 hours
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