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2x + 1 = 5x-44
the left and right page numbers of an open book are two consecutive integers whose sum is 193
A drain has a rectangular profile. W is the width of the drain in meters, and
D is the depth of the water in meters.
In the case that the depth is much less than the width the amount of water that flows per second through a rectangular drain is given by the following formula:
Q =
A
n
D
2
3 S
1
2 (1)
In which:
- Q is the volume of water that
flows per second through the
drain (in m3/s);
- A = W×D, the cross-sectional
area of the drain up to the level
of the water (in m2)
- n is a parameter describing the
resistance to the flow of water;
- S is the gradient of the river
(in m/m).
Use formula 1 to derive the units of n.
A drain has a rectangular profile. W is the width of the drain in meters, and
D is the depth of the water in meters.
In the case that the depth is much less than the width the amount of water that flows per second through a rectangular drain is given by the following formula:
Q = (A/n)*(D^2/3)*(S^1/2) ------------- (1)
In which:
- Q is the volume of water that
flows per second through the
drain (in m3/s);
- A = W×D, the cross-sectional
area of the drain up to the level
of the water (in m2)
- n is a parameter describing the
resistance to the flow of water;
- S is the gradient of the river
(in m/m).
Use formula 1 to derive the units of n.
25x^2+4x=100
Table 1 shows the height and growth of two friends for a year.
Kamal = Height:145 cm Growth: 30%
Salman = Height: 140 cm Growth: 35%
By applying the concept of proportion, who is more higher after a year? Justify your choice.
A school has 250 students and 43 of them are perfects. Find the percentage of ordinary students
47 out of 50 students are persent in school today. Find the. percentage of students who are present today.
What is the 20th term of the sequence: 1,1/3, . . . . . .,n +2/ 2n^2 + 3n - 2
Find the fourth term in the expansion x^2 -2y^1/2
