Step-by-step explanation:
1. 
multiply
do both the numerator and denominater
Answer:
34%
Step-by-step explanation:
From 50 spins 17 was a 1 or a 3.
Answer:
Both A and B are true identities
Step-by-step explanation:
A. N ( n − 2 ) ( n + 2 ) = n 3 − 4 n
We need to show that (left-hand-side)L.H.S = R.H.S (right-hand-side)
So,
n ( n − 2 ) ( n + 2 ) = n(n² - 2²) (difference of two squares)
= n³ - 2²n (expanding the brackets)
= n³ - 4n (simplifying)
So, L.H.S = R.H.S
B. ( x + 1 )² − 2x + y² = x² + y² + 1
We need to show that (left-hand-side)L.H.S = R.H.S (right-hand-side)
So,
( x + 1 )² − 2x + y² = x² + 2x + 1 - 2x + y² (expanding the brackets)
= x² + 2x - 2x + 1 + y² (collecting like terms)
= x² + 1 + y²
= x² + y² + 1 (re-arranging)
So, L.H.S = R.H.S
So, both A and B are true identities since we have been able to show that L.H.S = R.H.S in both situations.
Answer:
M = 20(2) + 3(2) = $46
Step-by-step explanation:
Here, we want to write an equation that could be used to find the amount of money spent
The rental charges $20 for a day and $3 for an hour
For 2 days, amount is 2 * 20 = $40
for 2 hours , amount is 3 * 2 = $6 hours
The amount Spent M will be;
M = 20(2) + 3(2) = $46
Answer:
117 units
Step-by-step explanation:
