X^2+7x-30
what we do is we find what 2 number multiply to get -30 and add to get 7
factor 30
30=2 times 3 times 5
we know that is has to be negative eventually so one is negative and one is positivie so we do2 factors and add
2 times 5=10
10 and -3
add
10-3=7
checks
10 times -3=-30
so we put those in
(x-3)(x+10)
factored
Answer:
2x-4=9
Step-by-step explanation:
2x-4=9
2x=y
2x=13
For a triangle the area is given as:
Re-arrange / solve for 'h':
Substitute known values:
Compute:
Answer:
2.9 cm long
Step-by-step explanation:
32÷11 = 2.9000000
there is no value of zero after point so it is 2.9 wwith out zero
Answer:
The percent of change 200%.
Hope that helps！
Step-by-step explanation:
