Use the butterfly method: you need to find two numbers that add up to a times c = 15 times -2 = -30, and the same two numbers need to add up to -7.
These two numbers are -10 and 3.
(-10)(3) = 30 and -10 + 3 = -7
Factored form: ( x - 10 )( x + 3 )
Answer:
a) The rate of change of the brightness after t days is
b) The rate of increase after one day is of 0.0915.
Step-by-step explanation:
The brightness after t days is given by:
A) Find the rate of change of the brightness after t days.
This is
The derivative of a constant is 0, the derivative of is
So, in this case, we have that:
The rate of change of the brightness after t days is
B) Find the rate of increase after one day.
This is . So
The rate of increase after one day is of 0.0915.
Answer:
13.79%
Step-by-step explanation:
A solution is made by dissolving 24 millimeters of saline in 150 millimeters of pure solution
Therefore percent of saline in the pure solution can be calculated as follows
= 24/24+150 × 100
= 24/174 ×100
= 0.1379 ×100
= 13.79%
Hence the percent of saline in the pure solution is 13.79%
Answer:
Hi, I just wanted to say that I got this question a few days ago on my test!
I haven't gotten my grade yet and I dont know if I got it right but I hope you figure it out! Best of luck to you!