Answer:
7:12
Step-by-step explanation:
Total no of animals in the field = 7 + 5 = 12
Ratio of cows 2 all d animals in the field =
Ratio = 7/12 = 7:12
Answer:
B. 48x - 56
Step-by-step explanation:
Here is how to work 2, 3 , and 4.
-4 = y + 3
y = -4x - 3
Solve for Y in the first equation:
-4 = y +3
Subtract 3 from both sides:
y = -7
Now using the addition method:
rewrite the second equation as 4x+y = -3
Multiply y = -7 by - 1 to get -y = 7
Now add the two together:
4x +y = -3
-y =7
4x = 4
Divide each side by 4:
x = 4/4 = 1
Then replace x in one of the equations to solve for y which is -7
X = 1, Y = -7
1/r = (3 1/2)/245
(3 1/2)r = 245
r = 245/3 1/2
r = 70
scale is 1 in to 70 miles.
