Answer:
x=3 y=-1
Step-by-step explanation:
3x+2y=7
x-y=4
Answer:
the answer to your question will be: A
Step-by-step explanation:
as much as I would like to, I'm really not that great at explaining things
Which set of ordered pairs does not represent a function? \{(5, -9), (6, -6), (-3, 8), (9, -6)\}{(5,−9),(6,−6),(−3,8),(9,−6)} \{
Nady [450]
Answer:
Step-by-step explanation:
Given
Required
Which is not a function
An ordered pair is represented as:
However, for the ordered pair to be a function; all the x values must be unique (i.e. not repeated)
<em>From options (a) to (d), option (b) has -6 repeated twice. Hence, it is not a function.</em>
Answer:
Answer (C) ⇒ He replaced the wrong term with its reciprocal in step 2
Answer (A) ⇒ How many 3/8 's in 48
Step-by-step explanation:
∵ The distance = 25 miles
∵ The time = 2/3 hour
∵ Average speed = distance ÷ time
∴ Average speed = 25 ÷ 2/3 ⇒ step 1 (he is √)
= 25 × 3/2 ⇒ step 2 (his 1st error 1/25 × 2/3)
= 75/2 miles/h
∵ How many 3/8 's are in 48 means:
48 ÷ 3/8 = 48 × 8/3 = 128
∴ Answer (A) is best modeled with a division expression