-3(n+3) - 10(8n + 9)
2 answers:
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Answer:
and 20.5x
and 6.2y
Step-by-step explanation:
-3-x/5+6.2y+20.5x-3/8y
We are given an expression with 5 terms
The terms that has same variables with same exponent are like terms. WE combine only like terms. Constants are also like terms.
In the given expression , the fractions and 20.5x have same 'x' . so they are like terms. we can combine these terms.
the fractions and 6.2y have same 'y' . so they are like terms. we can combine these terms.
<u>Corrected Question</u>
Below is data collected from a random sample of 80 students regarding their fitness habits. If the entire school has 600 students, then what is a reasonable estimate for the number of students who consider themselves to have an average fitness habits.
Answer:
(D)330
Step-by-step explanation:
Out of a random sample of 80 students
44 considered themselves to have AVERAGE fitness habits.
Relative Frequency of Students with average fitness habits=44/80
Therefore, out of the total population of 600 students
Expected Number of Students with average fitness habits
=Relative Frequency of Students with average fitness habits X Total Population
<u>The correct option is D.</u>