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Math 10 Chapter 3 - Part B
1.
If a/b = b/c = K then a = ___________
a) ck
2
b) ck
1
c) ck
3
d) ck
4
2.
If a/ b = c/d then a + b/b = c + d/d is called the ____________ property.
a) Commutative
b) Closure
c) Divdendo
d) Componendo
3.
The third proportional of 2 and 4 is _________.
a) 6
b) 7
c) 8
d) 5
4.
If 4:x::x:49 then x = ____________.
a) 13
b) 14
c) 12
d) 15
5.
In proportion a:b::c:d, b and c are called extremes.
a) False
b) True
6.
If x
a
y
3
then x
3
= ky
a) True
b) False
7.
If x:12 = 4:3 then x = 16
a) True
b) False
8.
If a/b = 7/13 then b + a /b - a = 10 /3
a) False
b) True
9.
The ratio among the angles of triangle are 3:7:8 then the angles are 30
o
70
o
and 80
o
.
a) True
b) False
10.
The ration among the sides of a triangle are 3,4,5 its perimeter s 120m. Then the length of the smallest side is 40m
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a) False
b) True
11.
If a:b = c:d then a | b : c | d = a + b : c + d .
a) True
b) False
12.
If 3a | 5b/3a + 5b = 3c | 5d/3c + 5d then a:c = b:d
a) True
b) False
13.
If a:b:c:d then a:d = b:c
a) True
b) False
14.
The mean proportional in b
7
and b
9
is b
16
a) True
b) False
15.
The value of x in continued proportion of 3, x+2, 27 is 7.
a) False
b) True
16.
If a:b::b:c then c is called the fourth proportional.
a) False
b) True
17.
The fourth proportional of a
2
| b
2
, b and a | b is a (a + b).
a) False
b) True
18.
There is direct proportion between volume and pressure of an object.
a) True
b) False
19.
Weight and mass of a body are directly proportional.
a) True
b) False
20.
If y
a
x then y = kx
a) True
b) False
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