Adding all the marks and dividing them by the total no. of students to get the average marks.
Avg. marks = (7+8+7+9+6)/5
Avg. marks = 37/5
Avg. marks = 7.4
Answer:
a +2b
Step-by-step explanation:
2(a + 2b) - a - 2b
Distribute
2a +4b -a -2b
Combine like terms
2a -a + 4b-2b
a +2b
<em>x = 4</em>
<em>Here is why:</em>
When adding up all angles of a triangle, they will be equal to 180.
Let's add ∠B and ∠C together.
Let's subtract it from 180, that will be the value of ∠A.
Now we can set ∠A equal to 49.
Subtract 9 from both sides.
Divide.
<u>x = 4</u>
Answer:
328
Step-by-step explanation:
If z is 0, then x has 9 choices. Therefore, z and x can be chosen in (1 × 9) + (4 × 8) = 41 ways. For each of these ways, y can be chosen in 8 ways. Hence, the desired number is 41 × 8 = 328 numbers 3-digit even numbers exist with no repetitions.
I would say A simply because the definition of inferential statistics means to make a conclusion with evidence
