Answer:(-9,-6)
Step-by-step explanation:
The total area is 84m.
Work is in the image, feel free to ask if you don’t understand it.
Hope this helped :)
Answer:
Step-by-step explanation:
The equation of a line in slope-intercept form is.
----->(eq 1)
∴ m is slope
subtract x from both sides.
divide - 2 on both sides
----->(eq 2)
By comparing (eq 1) and (eq 2)
4 x 10*5 (the 5 is on top of the 5 but small)
First you'll need two equations ( you can use any variables you want)
A= photo group 1
B= photo group 2
First equation:
A + B = 33
This is because the total number of photos from both groups is 33
Second equation:
4A = 7B
This is because the ratio is 4:7 so for every four photos in group A there must be 7 photons in group B.
Then take the first equation A + B = 33 and subtract B from both sides. Making the equation A = 33 - B
Then with that equation, substitute it in for equation 2 and it will look like this. 4(33-B) = 7B
Then distribute the 4 to the 33 and the -B making the equation 132 - 4B = 7B
Then add 4B to each side
Making the equation 132 = 11B
Then to get B by itself you must divide each side by 11 making the equation 132/11 = B which simplifies to 12 = B
Then plug in 12 for B in the first equation like this A + 12 = 33
Then subtract 12 on each side of the equation to isolate A so A = 21
So
A = 21
B = 12
