Answer:
Given: 3x+5+ 7x +2
Step-by-step explanation:
= 3x + 5 + 7x + 2
= 10x + 7
Because it's a multiplication, we can choose this:
72=8x9
Answer:
Lisa’s
Step-by-step explanation:
Ratio- Tall:Short
Lisa’s Class- 24:12
Paul’s Class- 15:20
Answer:
Step-by-step explanation:
the coordinate of D is (3,-3) because it is 3 units right from the x axis and -3 units down in y axis.
Answer:
90 days.
Step-by-step explanation:
dy/dt = - 0.0032y
dy = -0.0032y dt
dy/y = -0.0032 dt
Integrating:
ln y = -0.0032t + c where c is some constant
y = e^(-0032t) + e^c
y = A e^(-0032t) where A is a constant.
At time 0 we can let y = 1 so in that case A = 1
When there is 0.75 of y left:
0.75 = e^-0032t
ln 0,75 = -0032 t
t = ln 0.75 / -0032
t = 90.
