Answer:
2.4
Step-by-step explanation:
Answer:
A.A(n) expression is a mathematical relationship that uses one or more variables, numbers or operation symbols.
B.A(n) variable is a symbol that can be replaced by a number in a mathematical expression or equation.
C.A(n) equation is a mathematical sentence with an equal sign.
Answer:
The least possible sum for a+b+c is 18.
Step-by-step explanation:
As given a,b and c are positive integers and abc = 210
So, let us consider some situation in which the product abc = 20
- If a, b and c are 5, 6 and 7 then
abc = 210 & a+b+c = 18
- If a, b and c are 3, 7 and 10 then
abc = 210 & a+b+c = 20
- If a, b and c are 7, 15 and 2 then
abc = 24 & a+b+c = 24
- If a, b and c are 2, 5 and 21 then
abc = 210 & a+b+c = 28
From all of the above situation the least sum is 18 when a, b and c are 5, 6 and 7 respectively.
5(a - 2b) - 3(a - 2b) |use distributive property: a(b - c) = ab - ac
= 5a - 10b - 3a + 6b
= (5a - 3a) + (-10b + 6b)
= 2a - 4b
Answer:
the first one
Step-by-step explanation:
