<span>c. –17.9+(–4.2)
</span><span><span>The General rule for adding and subtracting numbers </span><span>
1. Two integers with the same signs
Once 2 integers has the same sign, then just add the numbers.
For example</span>
<span>1. 1+1 = 2 </span>
<span>2. 2 + 5 = 7 </span><span>
2. Two integers with different signs
<span>When 2 integers has different sign, then find the difference
For example
1. 1-1 =0</span></span>
<span>2. 2 – 5 = -3 </span><span>
3. Two integers that vary in sign
<span>When 2 integers vary in sign, then it will depend who which number carries the largest value
For example</span></span> <span><span>
1. </span>-3 + 2 = -1</span>
<span><span>2. </span>2 – 1 = 1</span><span> </span></span>
The greatest common factor of 18 and 42 would be 2.
Answer:
The multiplicative inverse of -32 = 1/-32 .
Step-by-step explanation:
Answer:
(a) Co-ordinate rule is 
and 
(b) Co-ordinates of B' and C' are 
and 
respectively.
Step-by-step explanation:
(a)
Here, the co-ordinates of A
are translated to A'
.
For the co-ordinates A and A', 
and 
So, x value of A has shifted to right by 6 units and y value of A has shifted 8 units down.
Hence, the co-ordinate rule that maps ΔABC onto ΔA'B'C' is:
and .
(b)
Using the co-ordinate rule, we can find the co-ordinates of B' and C'.
For B, 
and 
.
So, 
of B' is 
And, 
of B' is 
.
Therefore, co-ordinates of B' are .
For C, 
and 
.
So, of C' is 
And, of C' is 
.
Therefore, co-ordinates of C' are .
