Answer:
2.(b) w= 3
3. x= -3 or x= 3
Step-by-step explanation:
2.(b) <u>Method 1:</u>
Simplify:
×5 on both sides:
Expand:
Bring constants to 1 side, w terms to the other:
Simplify:
Divide both sides by 3:
<u>Method 2:</u>
Multiply by 5 throughout:
Expand:
Simplify:
+9 on both sides:
-4w on both sides:
Simplify:
Divide by 3 on both sides:
3.
Multiply by 3x on both sides:
Expand:
Simplify:
Divide by 6 on both sides:
-9 on both sides:
Factorise:
*Since a²-b²= (a +b)(a -b),
Thus,
x +3= 0 or x -3= 0
x= -3 or x= 3
There isnt a full inch in a push pin there is only 3/4 of one
If a jackal runs at 20mph, you multiply the speed by 1/5 to find 1/5 of a jackal's speed.
=20(1/5)
=(20*1)/5
=20/5
=4mph is 1/5 of a jackal's speed (assuming this is their speed)
Hope this helps! :)