twice a number: 2x
is 27 more than half the number: 1/2x
2x = 1/2x + 27
Isolate the x. Subtract 1/2x from both sides
2x (-1/2x) = 1/2x (-1/2x) + 27
2x - 1/2x = 27
1.5x = 27
Isolate the x. Divide 1.5 from both sides
1.5x/1.5 = 27/1.5
x = 27/1.5
x = 18
18 is the number
hope this helps
Pretty sure it’s the third one
A: b + 9
Step-by-step explanation:
If it's the sum of two numbers it is addition, meaning that you add the number of blue bikes(b) to the number of red bikes(9).
The value of the constant k when the value of x and y is 7 and 3 respectively in the equation xy=k is 21.
<h3>What is an equation?</h3>
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
The value of the constant k when the value of x and y is 7 and 3 respectively in the equation xy=k can be written as,
Hence, the value of the constant k when the value of x and y is 7 and 3 respectively in the equation xy=k is 21.
Learn more about Equation:
brainly.com/question/2263981
First let’s put 5x+2y = 12 into slope-intercept form.
2y = -5x + 12
y = (-5/2)x + 6
So any line that is parallel to y = (-5/2)x + 6 must have a slope of -5/2.
Our answer then is y = (-5/2)x + c
Now all that remains is to find out the value of c.
We know this line passes through the point (-2,4). Which means when x = -2, y = 4.
4 = (-5/2)(-2) + c
4 = 5+c
c = -1
Hence the line you want is y = (-5/2)x - 1
Since the question gave the line in standard form and didn’t ask for any particular form, let’s give the answer in the same form that the question asked.
2y = -5x - 2
5x + 2y = -2