X^2 +3x-4=0
(X+4)(x-1)=0 so x = -4 and x=1 are solutions
Answer:
8√2
Step-by-step explanation:
18√2 - 2√50 = 18√2 - 2√(2*25)=18√2 - 2*5√2= 18√2 - 10√2= 8√2
Answer:
<h2>
d = 245</h2>
Step-by-step explanation:
d is directly proportional to the square of a speed v
d = av²
5 = a•10²
5 = 100a
a = 0.05
d = 0.05v²
d = 0.05•70²
d = 0.05•4900
d = 245
there are 6 sections and the sections are 4 x 4
so the correct expression can be 6x4x4
Answer:
Step-by-step explanation:
Given
Bob can Paint a fence in 5 hr
so full job can be done in 5 hr
in 1 hr
job is done
suppose Jen done the work in x hr
so in 1 hr
part of job is done
Also if they combine they can do the job in 2 hr
so in 1 hr 
so 


