The nth term is 2n +1 and the 43rd term is 87
If denomenators are same, we can add
remember
(a/b)+(c/b)=(a+c)/b
so
(3y/2)+(9/2)=(3y+9)/2
The answer is D. 140
With the percentages given, that means that of 50 questions, there are:
5 essay at 10 pts=50
10 t/f at 2 pts=20
10 vocabulary at 2 pts=20
25 m/c at 2 pts=50
So 50+20+20+50=140 max pts
Answer:
2:24
1:12
4:48
3:36
Step-by-step explanation:
First, you want to find the unit rate for teachers (since you can't have 1/2 of a person/teacher). You do this by dividing 12 and 2 by 2, because there are 2 teachers teaching a class of 24.
24 divided by 2 = 12
2 divided by 2 = 1
Therefore 1 teachers teaches 12 students.
1:12 is the first ratio
You can find the second one by doing 12 times 4, because if each teacher gets 12 students, and there are 4 teachers, you need to add 12+12+12+12 or just 12 times 4.
4:48
For 36 you need to do the reverse. 36 divided by 12, because if there are 12 students for 1 teacher, finding how many times 12 fits into 36 will give you the number of teachers you have.
3:36
Remember when doing problems like this to also use your logic. For instance, you can't have 1 and 1/2 teachers or 15 and 1/4 students.
Answer:
<em>3x + 5</em>
Step-by-step explanation:
We are doing variables and simplifying.
You have two types of numbers here, you have a coefficient, and you have regular numbers. Now do keep in mind that you can never add a regular number to a coefficient. So the only thing in this problem you will add is 3 and 2. Because 3x is different
3x + (3 + 2)
3x + 5