I would round it to 81.1. If the .039 was 5 or over, I probably would have gone to 81.2.
Hope I helped! Have a nice day!
K-7.2>2.1.
+7.2 +7.2
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k> 9.3
are you suppose to solve for k?
Answer:
Equation 1, Multiplied by 2: 2x + 4y = 10
Equation 1, Multiplied by 2: 2x + 4y - 10 = 10 - 10
Equation 1, Multiplied by 2: 2x + 4y - 10 = 0
Equation 1, Multiplied by 2: 2x - 2x + 4y - 10 = 0 - 2x
Equation 1, Multiplied by 2: 4y - 10 = - 2x
Equation 1, Multiplied by 2: - 10 + 4y = - 2x
Notice that Equation 1 = Equation 2
One Solution
Equation 1: x - y = -10
Equation 2: 2x + 3y = 15
The students error is that they flipped where the x and y should be. so instead of x=4y it should be y=4x. or, the students error is that they forget to make it a fraction. so, it could also be x=1/4y. an equation that models this relationship is y=4x or x=1/4y
Answer:
a= -36
Step-by-step explanation:
1. Subtract 2 from both sides
2 + a/6 -2 = -4 -2
2. Simplify
a/6 = -6
3. Multiply both sides by 6
6a/6 = 6(-6)
4. Simplify
a = -36