The y-int. is found by setting x = 0: 3(0) + 2y = 7, or 2y = 7, or y = 7/2.
So the y-intercept is (0,7/2). You could also write "b=7/2."
N is the variable, you solve by subtracting 6 from 20, getting n = 14.
Answer:
The fencing will cost $330.09
Step-by-step explanation:
First we have to calculate the perimeter of the semicircle for that we use the following formula:
d = diameter = 29ft
s = semicircle
π = 3.14
s = d * 1/2 * π
we replace the values that we know
s = 29ft * 1/2 * 3.14
s = 45.53ft
Now we multiply the number of feet by the price of what comes out 1 foot of fence
45.53 * $7.25 = 330.0925
Round to the nearest hundredth
$330.0925 = $330.09
Answer:
234 students and 151 family members
Step-by-step explanation:
Let x be the amount of students and y be the amount of family members...
x+y=385
x=y+83
We can solve using substitution...
y+83+y=385
Combine like terms
2y+83=385
Subtract 83 from both sides
2y=302
Divide both sides by 2
y=151
x=151+83
x=234
There were 234 students and 151 family members.