Answer:
what grade are you in that seems hard
Step-by-step explanation:
A*5+b*2=145
a +b =50 | * -2
5a +2b=145
-2a -2b = -100
----------------------
5a-2a = 145-100
3a= 45
a=45:3
a=15 questions are worth 5 p
b=50-15=35 questions worth 2 p
It's equals 1 1/3 that's the correct answer
Slope (m) = 1/4
slope-intercept format is: y = mx + b
point-slope format is: y-k = m (x-h), where the point is at (h, k)
So we plug in for that using the point (8, 3):
y-3 = 1/4(x-8)
y-3 = 1/4x - 2 --> solve for y:
y-3+3 = 1/4x -2 +3
y = 1/4x + 1 --> now it's in slope-intercept format where the b is the y-intercept, which is +1
Answer:
Step-by-step explanation:
If the books length (L) is three times as long as the width (W), the equation for area is this:
L · W = 20 inches,
3W · W = 20 inches - substituting L for 3W
So then the books perimeter is
