Answer:
(x, y) = (4, 1)
Step-by-step explanation:
The coefficients of x are the same, so we can cancel the x-terms by subtracting one equation from the other. We want to do this so the resulting y-coefficient will be positive. That means we want to subtract the second equation from the first:
(-2x +y) -(-2x -4y) = (-7) -(-12)
5y = 5 . . . . . . . . simplify
y = 1 . . . . . . . . divide by 5
-2x +1 = -7 . . . . . substitute for y in the first equation
-2x = -8 . . . . . subtract 1
x = 4 . . . . . . divide by -2
The solution is (x, y) = (4, 1).
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A graphing calculator easily verifies the solution.
Answer:
D) 10 units
Step-by-step explanation:
Opposite sides of a parallelogram are congruent.
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<h3>setup</h3>
The relation between opposite sides tells you ...
BC = AD
2x = x +5
<h3>solution</h3>
x = 5 . . . . . . . subtract x from both sides of the equation
We want the length of AD, which is ...
AD = x +5 = 5 +5
AD = 10
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<em>Additional comment</em>
Often, it seems like the question is answered once the value of x is found. Here, finding the value of x is an <em>intermediate step</em>. The value of x is needed in order to be able to answer the question about <em>the value of an expression involving x</em>.
58 books can be expected to be turned in overdue
Answer:
the answer is (4,5)
Step-by-step explanation:
hope this helps
Can I have brainliest I'm new to brainly
Answer:
D=12yrs ANSWER 1: The daughter is 12 years old.
J=4D=4(12yrs)=48yrs ANSWER 2: Mr. James is 48 years old.
CHECK
J-D=36yrs
48yrs-12yrs=36yrs
36yrs=36yrs
Step-by-step explanation:
