Which steps can be taken to translate the phrase “the difference in the number of servings and four”? Check all that apply.
2 answers:
Answer:
A.Replace ''the difference with subtraction
B.Replace''the number of serving '' with a variable x.
C.Replace ''four'' with 4.
Step-by-step explanation:
We are given that a phrase''The difference in the number of serving and four''.
We have to find the steps can be used to translate the given phrase.
Let x be the number of serving.
Difference replace by subtraction.
Four replace by 4.
Difference of number of serving and four=
Hence, the expression is given by
Therefore, option A, B and C are true.
A.Replace ''the difference with subtraction
B.Replace''the number of serving '' with a variable x.
C.Replace ''four'' with 4.
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To calculate the speed of the cars, we need to write two equations in order to create a relation between the two speeds and be able to isolate one in function of the other.
So, let be the first car speed "x" and the second car speed "y", writing the equations we have:
For the first car:
For the second car:
We know that the speed of the second car is the speed of the first car plus 14 mph, so:
Now, we already know that both cars met after 2 hours and 45 minutes, meaning that positions will be the same at that moment, and the distance between A and B is 264 miles, so, we can calculate the relative speed between them:
If the cars are moving towards each other the relative speed will be:
Then, since we know that they covered a combined distance which is equal to 264 miles of distance in 2 hours + 45 minutes, we have:
Writing the equation, we have:
We have that the speed of the first car is equal to 41 mph.
Now, for the second car we have that:
Hence, we have that:
Have a nice day!