The easiest terms to check are the first (8x)(2x²) = 16x³ and the last (-5)(-6) = 30. This check eliminates the first choice. The remaining choices differ only in the sign and coefficient of the squared term, so that is the one we need to find.
The squared term will be the sum of the products of factors whose degrees total 2:
(8x)(-5x) + (-5)(2x²) = -40x² -10x² = -50x²
The appropriate choice is
16x³ -50x² -23x +30
Both define y, so they are equivalent.
5x-9=2x+6
3x-9=6
3x=15
x=5
Then plug in x into any of the equations
y=2(5)+6
y=10+6
y=16
Final answer: (5,16)
According to the given information, we build the equation for the cost. After we build the equation, the equation that relates these measures is:
Cost:
0.3 kilograms of tomatoes, at 3.30 dollars per kilogram.
Thus, the cost starts at:
y kilograms of cucumbers, at x dollars per kilogram.
Considering this, the cost will now be of:
0.2 kilograms of carrots, at z dollars per kilogram:
Now, we have to consider this for the cost, so:
A similar example is given at brainly.com/question/14544759
Answer: 75
Step-by-step explanation:
To find the value of 6c-15, we first want to finc the value of c. Once we find c, we can plug it in and solve.
-5c+6=-69 [subtract both sides by 6]
-5c=-75 [divide both sides by -5]
c=15
Now that we have the value of c, we can plug it in and solve.
6(15)-15 [multiply]
90-15 [subtract]
75
The value is 75.
7 divided by 3 is 21
Hope I helped! ( Smiles )
