D equals 4. Because 5D is like five times four.
Ok sure!
first we have to find y
so...
lets start with the first one:
5x+y=2 (we cannot have two variables together so:
5x+y=2
-y =-y so.. now we have 5x= 2-y (but we must get y positive and by itself!)
-2 = -2
so: now you have
5x-2=-y but need a positive variable so multiply each side by a (-1)
(-1) 5x-2=-y (-1) So..
-5x +2 =y so now we know Y!
therefore whenever you see why in the next problem insert in its place: -5x +2
I hope it helps!! :)
Answer:
see explanation
Step-by-step explanation:
Let u = x² ( choice of variable is flexible ), then
4u² - 21u + 20 = 0 ← expressed as a quadratic
This can now be solved for u and converted back into terms of x
2% of 1000 = $20
$20 x 4 = $80
She will owe $80 in interest at the end of 4 years.
Answer:
it is about grams and kilograms
Step-by-step explanation:
hope this helps
