Answer:
5.1
Step-by-step explanation:
The solution is in the attached file
I think its is the equation y=-x-7
Answer:
b. x+y=18
20x+25y=400
Step-by-step explanation:
Answer:
Left Side: 3x+5C or 3 rocks+5 crates Right Side: 24x+2C or 24 rocks+2 crates 7 rocks per crate
Step-by-step explanation:
Crates: C
24x+2C=3x+5C
each side subtracted by 2C
24x=3x+3C
each side subtracted by 3x
21x=3C
each side divided by 3=
7x=C; 7 rocks in each crate
Double check: 24x+(2*7x)=3x+(5*7x) 24x+14x=3x+35x 38x=38x, which is always true
Answer: 2.66 × 10⁻¹³
<u>Step-by-step explanation:</u>
First, use the decay formula where
- A is the final amount (amount left)
- A₀ is the initial amount (amount you started with)
- k is the rate of decay (you need to solve for this)
- t is the time
Given:
- A = 1/2(300) = 150
- A₀ = 300
- k = unknown
- t = 28.8
Next, input the k-value and the new t-value to solve for A.
- A = unknown
- A₀ = 300
- k = -0.0240676
- t = 1440