Answer:
Step-by-step explanation:
1)a ) Let the constant proportionality =k
Direct proportion.So, y = kx
Plugin y = 6 and x =2 and find k
6 = k*2
6/2 = k
k = 3
Constant proportionality = 3
b) y = 3x
When x = 7 ; y = 3*7 = 21
y = 21
c)When x = 9,
y = 3*9
y = 27
d) When y = 9,
9 = 3*x
9/3 = x
x = 3
e)when y = 30
30 = 3*x
30/3 =x
x = 10
3) y is inversely proportion to x³
b) when x = 4
c) When x = 6
d) When y = 24
Answer:
The answer is C.
Step-by-step explanation:
As you can see, It won't be a square because the bottom is 4 units long and the triangle is an estimated 3 units tall, so you can cross those two answers out. Next, you can look at the first answer. What is obvious, the triangle is definitely not double a rectangle what has the same basic measurements as the triangle. Answer C is the only one that is logical.
(3/5)x+1=125/27
81x+135=625
81x=490
x=490/81= 6 4/81
The answer is 1, the solution is in the photo
that would be four hours.
12x3=36
1 hour 20 minutes x3= 4 hours
