Answer:
The first option is the answer (k = +/- 2 square root of J)
Step-by-step explanation:
Since you need to leave k by itself, You multiply both sides by 4 which will leave you with 4J=k^2. To get rid of the square(^2), you need to square root both sides which will leave k by it self. So now you have 4J inside the square root = k. The last step is to take the square root of 4 (which is + or -2) and put it outside the square root sign, leaving J inside the square root.
Answer:
Point form : (9/5 , -16/5)
Equation form : x=9/5 , y=-16/5
Step-by-step explanation: Solve for the first variable in one of the equations, then substitute the result into the other equation.
Hope this helps you out! ☺
A. We must consider that Marisa is walking a straight trail
so that the time required to cover a distance is persistent or constant.
B. The slope of the line is: y = m x + b
Where in this problem, y is the distance, m is the slope or
the time it takes for each block, x is the time, and b would be the y intercept
or the initial location of Marisa.
C. The slope m can be calculated using the formula:
m = (y2 – y1) / (x2 – x1)
m = (8 – 12) / (6 – 0)
m = -0.67
The negative sign is the space between Marisa and Sanjay’s
home is declining by time. It further means that there is a cut in 0.67 blocks
per minute.
D. y = - 0.67 x + b
The starting point of Marisa is at 12 blocks away from
Sanjay’s home, therefore let b be 12.
Finding for time when distance is y = 0:
0 = -0.67 x + 12
x = 17.9 minutes
Therefore it takes approximately 17.9 minutes to go to Sanjay’s
home.
You need to find 30% of 90
You can do this by finding 10%
10% of 90 = 0.1 x 90 = 9
Then you can times this value by 3 to find 30%
9 x 3 = 27
27 cars are two-toned
