There is a common denominator of 12 among those fractions.
Answer:
The value of x is equal to -2/3.
Step-by-step explanation:
In the problem it says that y equals 2x, and that 3x - 3y = 2.
The first step is to substitute 2x into y.
3x - 3(2x) = 2.
The next step is to use distributive property.
-3(2x) = -6x.
Now we need to add like terms.
3x - 6x = -3x.
Which gives us the equation -3x = 2.
The final step is to divide on both sides to get the value of x.
-3x/-3 = 2/-3.
x = -2/3.
So as you can see, x is equal to -2/3.
We can also check to make sure by redoing the problem, but substituting the value of x.
3(-2/3) - 3(2 * -2/3) = 2.
-2 - 3 * -4/3 = 2.
-2 + 4 = 2.
2 = 2.
The value of x is indeed -2/3.
<span> -9x4 + 5x2 - 26x - 12
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3
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Answer: Lorena weighs 51 lbs more than Omar.
Step-by-step explanation: Set 4x+3 equal to 67, Lorena's weight. This makes sense because the x in 4x+3 represents Omar's weight.
4x+3=67
4x=64
x=16
The question asks for the difference between Omar and Lorena's weight, so simply subtract the two numbers.
67-16=51
Replace X with 0 and solve the equation, then replace x with 8 and solve the equation again.
Then find the difference between the 2 answers and divide that by the difference in the 2 X values.:
f(0) = 2(0) + 33(0) -3 = -3
f(8) = 2(8) +33(8) - 3 = 16 + 264 - 3 = 280-3 = 277
Difference: 277 - (-3) = 277+3 = 280
Difference between the X values 8 - 0 = 8
Average rate of change: 280 / 8 = 35
