Answer:
20
Step-by-step explanation:
y^2+4y-1=(-7)^2+4(-7)-1=(-7)(-7)-28-1=49-28-1=21-1=20
Apply slip and slide
a^2-3a-4
(a-4)(a+1)
(a-2)(2a+1)
Find zeros
a-2=0
a=2
2a+1=0
2a=-1
a=-1/2
Final answer: {-1/2, 2}
If ken makes $14,500 in 5 months that means he make 2,900 in a month. 24 times $2,900 is $69,600 so the answer is $69,600. He can expect $69,600 is two years.
Answer:
n = 3.8
Step-by-step explanation:
0.3(n - 5) = 0.4 - 0.2n
Distribute
.3n - 1.5 = .4 - .2n
Add .2n to each side
.3n +.2n -1.5 = .4 -.2 +.2n
.5n -1.5 = .4
Add 1.5 to each side
.5n -1.5 +1.5 = .4+1.5
.5n = 1.9
Divide each side by .5
.5n/.5 = 1.9/.5
n =3.8
