Answer:
Step-by-step explanation:
Let her brother's age be x
Sarah is 2x + 4
Answer:
(x-5)(x+6)=0
Step-by-step explanation:
hehe i doing the smae unit rn.
if a=1 (which it does do ac factoring)
you need two numbers that multiply to -30 and add to 1. those numbers are 5 and -6.
substitute 1x for -5x + 6x.
group the numbers into pairs and find their gcf's
x(x-5) 6(x-5)
since the parenthesis r the same yo only need one. Now you need to put x and 6 in a parenthesis.
FINAL: (x-5)(x+6) hope this helps
21 I think I'm not sure tho
A. 6c
B. -5c
C. -0.7c
D. 2c
Just a few you could use.
Step-by-step explanation:
- 70000000
- 500000000000
- 0.00000084
- 0.000000000000539
- 0.00007
