Answer: 1666/695 or 2 276/695 as a mixed fraction
Step-by-step explanation:
Answer:
for this the correct answer is option 3
1) plug in 1 for x to get the following:
1^2 + 2(1)
1^2 = 1
2 * 1 = 2
1 + 2 = 3
the answer is 3.
2) for estimating, your teacher may have another method but here's how i was taught:
determine whether to round up or down to a whole number:
7.9 rounds up to 8 and 0.67 rounds up to 1, and 8 * 1 is 8, so i would estimate the answer to be 8.
(i can't do the remaining two sorry!!)
Hopefully this helps and makes sense to you if you don’t understand ask another question to me or anyone hehe
Let be "n" the number mentioned in the exercise.
You need to remember that:
1. In Math word problems:
- The word "times" means multiplication.
- The word "twice" indicates that something is multiplied by 2.
- "Sum" is the result of an Addition.
2. In inequalities, "Less than" is represented with the following symbol:
Then, based on the above, you know that "3 times a number" can be expressed as:
And "Twice the same number":
Therefore, "The sum of 3 times a number and twice the same number is less than 45" can be represented with the following inequality:
The answer is: Option a.