Answer:
d(t) = -100t
Step-by-step explanation:
The general expression for the linear model is:

Since the submarine already starts at sea level, b=0:

The constant "m" is the rate at which the submarine descends in feet per minute. Considering depth as a negative quantity, m=-100

The linear model that represents the depth of the submarine relative to sea level, in feet, after t minutes is d(t) = -100t.
Answer:
Value of equation = 26.25
Step-by-step explanation:
Given:
Equation given
-4a² + 3ab - (2a + 3b)
Given value of a = 1/4
Given value of b = -12
Find:
Value of equation
Computation:
-4a² + 3ab - (2a + 3b)
By putting value of a and b
-4(1/4)² + 3(1/4)(-12) - [2(1/4) + 3(-12)]
-4(1/16) - (36/4) - [2/4 - 36]
-4/16 - 36/4 - [-142/4]
- 0.25 - 9 + 142/4
-0.25 - 9 + 35.5
Value of equation = 26.25
Answer:
A
Step-by-step explanation:
<u>Answer with step-by-step explanation:</u>
We are given that Sam invested $48,000 at 6% interest and the rest at 10%. Given that he received $4,000 interest in one year, we are to find how much he invest at each rate.
Assuming the amount invested at 6% interest rate as
, we can write it as:
![(\frac{6}{100} \times x)+(\frac{10}{100} \times [48000-x])=4000](https://tex.z-dn.net/?f=%28%5Cfrac%7B6%7D%7B100%7D%20%5Ctimes%20x%29%2B%28%5Cfrac%7B10%7D%7B100%7D%20%5Ctimes%20%5B48000-x%5D%29%3D4000)





So the amount invested at 6% = $20,000 and amount invested at 10% = (48000 - 20000) = $28,000
Answer:
Attached
Step-by-step explanation:
The function given is
f(x)=x³+x²+x+1
You can use a graph tool to visaulize the graph as attached