Answer:
When k(x) is 2x² - 5x + 3, k(-3) = 36.
Step-by-step explanation:
k(x) = 2x² - 5x + 3
Substitute the input of x.
k(-3) = 2(-3)² - 5(-3) + 3
Square -3.
k(-3) = 2(9) - 5(-3) + 3
Multiply 2 and 9.
k(-3) = 18 - 5(-3) + 3
Multiply -5 and -3.
k(-3) = 18 + 15 + 3
Add 18 and 15.
k(-3) = 33 + 3
Add 33 and 3.
k(-3) = 36.
Answer:
The solution is x=-6 and y=7
Step-by-step explanation:
Given equations are:
In elimination method, the co-efficient of one of the variables are equated so that one variable can be eliminated by adding or subtracting the equations
In the given system of equations, the co-efficient of y is already same i.e. 4 so we only have to subtract the equations
Subtracting equation 2 from equation 1
Putting x = -6 in equation 1
Hence
The solution is x=-6 and y=7
Hi there! The answer is 5.
As you mentioned in the question, the amount of chores Janie does is represented by c.
When we know this we can set up an expression which represents the total amount of money Janie earns.
She always receives $3.
She also receives
$2 × the amount of chores
$2 × c = 2c
The expression which represents Janie's total earnings is 3 + 2c.
Now we can start solving.
Subtract 3 from both sides.
Divide both sides by 2.
Hence, Janie must do 5 chores to earn enough money to buy a CD.
Y=10
because
-9(0)-2y=-20
0-2y=-20
-2y=-20
-2y/-2=-20/-2
y=10
Answer:
9,8,1,0,-10,-15
Step-by-step explanation:
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