Question 1 - 37 students took the test
Question 2 - 16 students scored between 20 and 40 points
- Ari -
Answer:
n² + 3n +1
Step-by-step explanation:
n(n+1) + 2n + 1
<h3>i) distribute n into the parantheses</h3>
= (n×n) + (n×1) + 2n + 1
= n² + n + 2n + 1
<h3>ii) collect like terms</h3>
= n² + 3n +1
Answer:
, 
and 
.
Step-by-step explanation:
Consider the given equations are
a. 
b. 
c. 
(a)
Divide both sides by 4.
Taking square root on both sides.
(b)
Add 25 on both sides.
Divide both sides by 5.
Taking square root on both sides.
(c)
Subtract 8 from both sides.
Multiply both sides by -1.
Taking square root on both sides.
Answer:
[6, infinity)
Step-by-step explanation:
Answer:
The coefficients are
11,-4 and 0.
Step-by-step explanation:
We are given two algebraic expressions. We are subtracting the second from the first.
First one is:
(4x²y3 + 2xy2 - 2y)
Second expression is:
(-7x?y3 + 6xy2 – 2y)
The given expression:
(4x²y3 + 2xy2 - 2y) - (-7x?y3 + 6xy2 – 2y)
The coefficients are
11,-4 and 0.
