Answer: She has 27 quarters.
Step-by-step explanation:
Let be "d" the number of dimes Marcy has and "q" the number of quarters Marcy has.
Based on the information provided in the exercise, we can set up the following system of equations:
<em> </em>In order to solve the system of equations, we can use the Elimination method:
- Multiply the first equation by -0.1
- Add the equations.
- Solve for "q".
Then:
Area is length x width, so you count the squares on the bottom and sides and multiply the numbers.
Answer:
sorry but where is the triangle ️
i can barely see it in the imagine can you spell it for me please
Answer:
1.39 × 10^22 molecules of CO₂
Step-by-step explanation:
We are given;
We are required to calculate the number of molecules of CO₂
1 mole of a compound contains 6.022 × 10^23 molecules
- Thus, we can answer the question;
2.3 × 10^-2 moles will contain;
= 2.3 × 10^-2 moles × (6.022 × 10^23 molecules/mol)
= 1.386 × 10^22 molecules
= 1.39 × 10^22 molecules
Therefore, there are 1.39 × 10^22 molecules of CO₂