In algebra, substitution is putting numbers in place of letters to calculate the value of an expression. For example:
If e=3 and f=4. what is that value of ?
A formula is a mathematical relationship connecting two or more quantities. For example, , expressing F in terms of m and a.
is a formula giving x in terms of the quantities of a, b and c.
From F=ma, we can find the value of F if we are given values for m and a, which you can see in the example below.
Find the value of F if and
From the formula , if we are given that a = 2, b = 5 and c = −12, find the value of x.
Find the value of T when , and , that:
Find the value of S if:
When , and .
Given that . Find the possible values of V when u = 4, a = 5 and S = 4.8
Find the possible values of x if , when and
Find the value of w if if:
Evaluate y in each of the following expressions, given that:
Find the value of w when:
, , and
Giving that . Find the value of E when and , giving an answer in standard form.
Find the value of x if and , given that