toaz.info-mathematics-2-weber-kunkel-martinez-and-shultis-oxford-2018-pdf-pr_ec2d38046ecccf7e7d7ec6294557323e (4)

could you use your equation(s) to nd the missing value in
How
of the following?
each
x 3 =
96 8
how converting a ratio represented as a fraction to a
Explain
involves a proportion.
percentage
the missing value in each of these proportions. Round your
Find
to the nearest hundredth where necessary.
answers
12 ,
8x = 264
x = 33
x 5 =
17 ,
9
9x = 5 × 17
9x = 85
x = 9.4
x 5 =
17 9
a proportion, the products of the quantities
In
each diagonal are equivalent.
on
a proportion, the products of the quantities
In
each diagonal are equivalent.
on
Reect and discuss Reect and discuss 88
●
m
2.4 8.4
75
=
=
11
165
x
20.5
●
Example 3
Q
8
12
a =
b
x
22
8
A
a If =
x
22
then 8x = 12 × 22
Simplify the right-hand side
8 x
264
Solve the equation by dividing each side by 8.
=
8
8
The missing value is 33.
b If
then
Simplify the right-hand side
9 x
85
=
Solve the equation by dividing each side by 9.
9
9
The missing value is approximately 9.44.
1 Ratios and proportions
22