Chapter 1 Quadratic Equations In One Unknown Worksheet With Answers Page 34
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34Number and Algebra
Number and Algebra
=
−
+
2
22. The graph of y
cuts the
25. The area of the following trapezium is
4
x
7
x
s
2
x-axis at points P and Q as shown. If one
37.5 cm
, find x.
−
+
=
2
of the roots of 4
is 2,
x
7
x
s
0
( x + 3) cm
find the x-coordinate of point P.
(2 x − 1) cm
− 7 x + s
2
y = 4 x
y
(4 x − 3) cm
A. 2
B.
3
x
P
Q
0
C.
4
D. 5
B
1
−
A.
26. Country A and Country B are 8400 km
4
apart. An aeroplane flies from Country A
B. −2
to Country B with a constant speed. If the
C. −4
speed of the aeroplane is decreased by
3
−
100 km/h, the flight takes 2 hours longer.
D.
A
4
Find the original speed of the aeroplane.
23. Find the value of x in the figure.
A. 400 km/h
B.
500 km/h
C.
600 km/h
(2 x − 2) cm
8 cm
D. 700 km/h
D
x cm
A. 3
B. 4
C. 5
D. 6
D
24. The product of two consecutive positive
numbers is greater than their sum by 19,
find the two numbers.
A. 2 and 3
B. 3 and 4
C. 4 and 5
D. 5 and 6
D
34
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