Answer: <em>a + ( 2a - 7 ) = 41</em>
Explanation:
Let be "a" the Nicci's age and "s" the Nicci's sister.
You know that the sum of Nicci's age and her sister's age is 41. This can be represented with the following equation:
<em>a + 8 = 41</em>
And knowing that Nicci's sister is 7 years less than twice Nicci's age, you can write another equation to represent this:
<em>8 = 2a - 7</em>
Now, substitute the second equation into the first equation in order to find the equation that represents this relationship.
Then, this is:
<em>a + ( 2a - 7 ) = 41</em>
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<em>Hope it helps...</em>
The formula which shows how to calculate the number of tires, t, needed if they produce c cars per day is t = 5c. option D
<h3>Equation</h3>
- Number of tires needed by each car = 4
- Number of spare tires needed by each car = 1
Total tires needed by each car = 4 + 1
= 5
- Number of cars produced per day = c
Total number of tires, t needed for c cars.
Number of tires needed, t = Total tires needed by each car × Number of cars produced per day
t = 5 × c
t = 5c
For instance,
if 5 cars are produced per day
Number of tires needed, t = Total tires needed by each car × Number of cars produced per day
t = 5c
= 5 × 5
t = 25 tires
Therefore, the formula which shows how to calculate the number of tires, t, needed if they produce c cars per day is t = 5c. option D
Learn more about equation:
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Answer:
It’s either 1 or 2
Step-by-step explanation: