I need help with question 10 please.
1 answer:
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Answer:
I'm here to help!
First, we need to make a proportion to find the sales tax:
(Let x= Sales tax)
We have the sales tax!
Now we need to estimate, as you cannot have.75 of a cent...
Now to add them:
There you go! The total cost is about 81.19!
Hope this helps!
P.S. Stay Safe!
The graph of line 3x-y= -1 will be as follows.
What is a line?
A line is an endlessly long, straight object that, despite being drawn with a minimum width, is considered to have no particular width in mathematics.
Main Body:
slope = m = 3 point = (0,1)
The formula for one point form for a line is -
y-y₁ = m(x-x₁)
y- 1 = 3(x-0)
3x-y =-1
Now the graph for the line will be plotted by using the point given and the slope--
on Graph mark the point (0,1)
To learn more about line click on the link below
#SPJ1
Answer:
The sum of ages of all 18 pupils in the class = 81
Step-by-step explanation:
Total number of pupil in the class = 18
Average of years in the class =
Now,
⇒Average of sum of ages in the class = 4.05
Let us assume the sum of ages of all students in the class = m
By the formula for AVERAGE:
or, m = 18 x 4.5 = 81
Hence, the sum of ages of all 18 pupils in the class = 81