Answer:
Sam is 15 and her mother is 36
Step-by-step explanation:
Let Sam's age be x and her mother's age by y
We can figure out Sam and her mother's age by representing these scenarios using equations with variables and solving the system using elimination
2x+y/2=48
3x-1/3y=33
You start by making all the numbers in both the equations whole
2(2x+y/2=48)
3(3x-1/3y=33)
Becomes:
4x+y=96
9x-y=99
Add together to eliminate y
13x/13=195/13
x=15
Now that we have x we can plug the value into the x in the equations to give us the y-value
2x15+y/2=48
30+y/2=48
30+y/2-30=48-30
y/2=18
2 X y/2=18 X 2
y=36
Therefore x=15 and y=36
Answer:
well i am on mobile so o cant do step by step process bbut i can give you answer
Step-by-step explanation:
answers,
1. 35/9 (3.88)
2. 599/91 (6.58)
3. -66
Answer: 60 adults and 60 students
Step-by-step explanation:
Answer:
No parallel lines
Lines 1 and 3 are perpendicular
Step-by-step explanation:
Given:
Required
Determine if they are parallel, perpendicular or not
The slope intercept of a line has the form:
Where
First, we calculate the slope of each lines
Compare the above to
Make -6y the subject
Divide through by -6
Compare the above to
Divide through by 3
Compare the above to
So, we have:
None of the slopes are the same, so none of the lines are parallel.
However, lines 1 and 3 are perpendicular.
This is shown below
When the slope of two lines satisfy the following condition, then they are perpendicular.
This gives:
Convert / to *
Answer:
true
Step-by-step explanation:
well same I'd everything looks alike but similar is the basics
