Answer:
Step-by-step explanation:
1.
Equation one:
x = -5, x = -1 (Both are real)
Equation two:
No real solutions
Equation three:
x = -3 (Real)
Equation four:
No real solutions
2.
The easiest way to figure out if an equation has real solutions is to factor it. If it is factorable, then it has real solutions. If it isn't, then it doesn't have real solutions.
No x does NOT equal 16. you would substitute x for 16 which gives you 16+12. That equals 28 not 30. The correct answer is x=18
Answer:
monthly payment is $377
C is the correct option.
Step-by-step explanation:
The formula for the monthly payment is given by

Given that,
P = $20,000
n = 5 years = 60 months
r = 0.05
Substituting these values in the formula

On simplifying, we get

Therefore, the monthly payment is $377
C is the correct option.
Answer with Step-by-step explanation:
We are given
Volume of blood=V=7500 L=
1 liter=
Height of person=h=1.5 m
Density of blood,
We have to find the work done and power of person's heart.
We know that
Work done,
Where 
Using the formula

Time,t=1 day=
Power, P=
Using the formula

A. simple random
b. systematic
c. cluster
d. stratified
e.convenience