Answer:
c = b/cos 45
Step-by-step explanation:
SOHCAHTOA
- We use Cos
- Cos 45 = b/c
- c = b/cos 45
150=i^2
150^.5=12.2474
11^2=121
12^2=144
13^2=169
between 12 and 13, D
Answer: y=2x+3
Step-by-step explanation:
Add 2x to both sides.
−2x+y+2x=3+2x
y=2x+3
Answer:
2.60 gr
Step-by-step explanation:
We need to consider the function
where Po is the initial substance k is the rate of decay and t is the time
We know that
and at the 7 th year P(t) is 7
This means

We solve for k

Pretty sure it's C. The division property of equality.
Because on the last step, you divide 9d by 9, to get d. And you also have to divide the other side by 9.