Step-by-step explanation:
substitute the values
px=3x+1
=(3x+1)/x
=3x/x +1/x
=3+1/x
rx=2x²+5
p(r(x)) =(3+1/x(2x²+5))
=6x²+15+2x²/x+5/x
=3(2x²+5)+1/x(2x²+5)
=(2x²+5)(3+1/x)
The line on the graph passes through points A(1,3) and B(7,1). A) Calculate the gradient of line AB. B) Find the gradient of a l
1 answer:
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Answer:
Expression for Larry will be;
Expression for Zach will be;
Step-by-step explanation:
Given:
Larry gets $7 for each of the 3 flower beds he weeds and Y dollars to edge a yard.
Amount for each flower bed he weeds = $7
Number of flower bed he weeds = 3
Total amount he gets for 3 flower bed he weeds =
Amount earn to edge a yard = Y
Total amount Larry will earn = $21 + $Y
Now Zach will get $25 to clean a garage and Y dollars to wash a car.
Amount earned to clean garage = $25
Amount earned to wash as car = $Y
Total Amount Zach will earn = $25 + $Y
The Both have to make X dollars to meet their goals.
Expression for Larry will be;
Expression for Zach will be;
Given:
Total number of students at Colfax Middle School = 270
Ratio of boys to girls is 5:4.
Total number of students at Winthrop Middle School = 180
Ratio of boys to girls is 4:5.
The two schools hold a dance and all students from both schools attend.
To find:
The fraction of the students at the dance are girls
Solution:
There are 270 students at Colfax Middle School, where the ratio of boys to girls is 5:4.
Number of boys
Number of girls
There are 180 students at Winthrop Middle School, where the ratio of boys to girls is 4:5.
Number of boys
Number of girls
Now,
Total number of students in both schools
Total number of girls in both schools
The fraction of the students at the dance are girls is
Therefore, the required fraction is .