Answer:
1. 2x^2+6x=0 <--> 2x(x+3)=0
2.4x-x^2=0 <--> x(4-x)=0
3.14x-7x^2=0 <--> 7x(2-x)=0
4.24x-6x^2=0 <--> 6x(4-x)=0
Step-by-step explanation:
just try to expand the answer given for example when you look at no.1, 2x•x=2x^2 so look for the equation where there is a 2x^2 in it.
for finding the solution, for example when you look at no.1 again, you have 2x=0 so x=0/2=0 and you also have x+3=0 so x=-3
this applies to all the pther no.
Answer:
$27.6
Step-by-step explanation:
The meal was $24, so you multiply 24 * .15 (which is your 15%) which equals 3.6. Add the 3.6 to 24 and your total is $27.6
Answer:
m
Step-by-step explanation:
0.001 grams = 1 milligram
0.001 grams = 1 e-6 kg
0.001 grams= 0.01
so whick one is equivent
Answer:
y = 15
Step-by-step explanation:
x + y + z = 45 → (1)
Given
y = (x + z)
Multiply both sides by 2 to clear the fraction
2y = x + z ← substitute into (1)
2y + y = 45
3y = 45 ( divide both sides by 3 )
y = 15
He Is not correct because they are all equivalent to each other if u simplify it .5=.5=.5 five is in the same spot every time