Expand and simplify 4x + 2 (x - 5)
1 answer:
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Answer:
see below
Step-by-step explanation:
25x + 200 > 1,200
Subtract 200 from each side
25x + 200-200 > 1,200-200
25x> 1000
Divide by 25
25x/25 >1000/25
x>40
(A)
we are given
(-1.15) x 3.2
Since, sign of 1.15 is negative
and sign of 3.2 is positive
so, we put negative sign in front
now, we can multiply them
and we get
.............Answer
(B)
Suppose, we are given product of two numbers 'a' and 'b'
so, we use this property
case-1: When both positive , then we put positive in front
case-2: When both negative , then we put positive in front
case-3: When first is negative and second is positive , then we put negative in front
case-4: When first is positive and second is negative , then we put negative in front