can someone help with this?
Answer:
X = 4402/51 = 86.31
Step-by-step explanation:
x = −10
x = −7
x = −4
x = −2
The solutions to the equation are x = - 7 and x = 4
Equation solutions are the true values of x in the equation
The equation is given as:
(x - 2)(x + 5) = 18
Expand the equation
x^2 + 5x - 2x - 10 = 18
Subtract 18 from both sides
x^2 + 3x - 28 = 0
Factorize the expression
(x + 7) * (x - 4) = 0
Solve for x
x = - 7 and x = 4
Hence, the solutions to the equation are x = - 7 and x = 4
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Answer:
x < - 7/2 (it's 7 over 2 not 7 divided by 2)
Step-by-step explanation:
The picture is the graph
the smaller number is 8, and the larger number is 12, and they indeed add up to 20, and three times the smaller number (3 * 8) is equal to two times the larger number (2 * 12).
Let's call the two numbers x and y, with x being the smaller number and y being the larger number.
We have two pieces of information from the problem:
1. The sum of the two numbers is twenty:
x + y = 20
2. Three times the smaller number is equal to two times the larger number:
3x = 2y
Now, we can solve this system of linear equations.
First, we can solve equation (1) for x:
x = 20 - y
Now, substitute this expression for x into equation (2):
3(20 - y) = 2y
Now, distribute the 3 on the left side:
60 - 3y = 2y
Now, isolate the variables on one side of the equation and constants on the other side:
60 = 2y + 3y
Combine like terms:
60 = 5y
Now, divide by 5 to solve for y:
y = 60 / 5
y = 12
Now that we have found the value of y, we can substitute it back into equation (1) to find x:
x + 12 = 20
Subtract 12 from both sides:
x = 20 - 12
x = 8
So, the two numbers are:
x = 8 (smaller number)
y = 12 (larger number)
Therefore, the smaller number is 8, and the larger number is 12, and they indeed add up to 20, and three times the smaller number (3 * 8) is equal to two times the larger number (2 * 12).
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Answer:
The smaller number is 8
The larger number is 12
Step-by-step explanation:
Let the smaller number be x
Let the larger number be y
Translate the question and solve ;
B. x = f(y) = 7 + y
C. y = f(x) = 7x
D. y = f(x) = y – 7
E. y = f(x) = 7 + y