After h hours A has 6000 - 2000h cells and B has 2000 - 1000h. Equating them as one form:
6000 - 2000h = 2000 - 1000h
-2000h + 1000h = 2000 - 6000
-1000h = -4000
h = -4000/-1000 = 4 hours
I’m certain 162, 6•12= 72, and 6•15= 90
Answer: C, 20
33 - 3 = 30
^the three who like both
x + 2x = 30
^students who only like computing
^students who only like PE
3x = 30
x = 10, so twice that is 20.
*hope i explained it well!!
Answer: z = 7 or z=-5
Step-by-step explanation:
First you need to factor the polynomial.
To factor - 2z -35 You will need to find two numbers that their product is -35 and their sum is -2 and the numbers -7 and 5 works out.
Rewrite the polynomial as,
- 7z + 5z - 35 = 0 factor the left by grouping
( -7z) (5z -35) = 0
z(z -7) 5(z - 7) = 0 Factor out z-7
(z-7)(z+5) = 0 Now apply the zero product by setting each of them equal 0.
z-7= 0 or z+5=0
+7 +7 -5 -5
z = 7 or z= -5