Answer correctly pls
1 answer:
<u>Answer:</u>
- The expression that represents the total number of raffle tickets sold by Trudy and Shaun is 3x/2 + 3.
<u>Step-by-step explanation:</u>
<em>Let's represent Shaun for S and Trudy for T.</em>
<u>We know that:</u>
- => S = x tickets sold
- => T = x/2 + 3
<em>The question is asking for the total number of raffle tickets Shaun and Trudy have sold altogether. Let's add both the sellers.</em>
- S + T = x + x/2 + 3
- => S + T = 2x/2 + x/2 + 3
- => S + T = 3x/2 + 3
Hence, <u>the expression that represents the total number of raffle tickets sold by Trudy and Shaun is </u><u>3x/2 + 3.</u>
Hoped this helped.
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Answer:
The mass of the radioactive sample after 40 minutes is 12.8 g.
Step-by-step explanation:
The mass of the sample can be found by using the exponential decay equation:
Where:
N(t): is the amount of the sample at time t =?
N₀: is the initial quantity of the sample = 120 g
t = 40 min
λ: is the decay constant = 0.056 min⁻¹
Hence, the mass of the sample after 40 min is:
Therefore, the mass of the radioactive sample after 40 minutes is 12.8 g.
I hope it helps you!