Answer:
x=0 , x=-3
Step-by-step explanation:
Apply all exponent rules:
= 
×
= 
Rewrite equation with 
× + 
- 28 = 0
Solve for u to give :
u = 1, u = 1/27
Substitute back u = , solve for x :
= 1 , x= 0
, x= -3
x=0 , x=-3
Substituting x back into original equation verifies our answers
Answer:
24m^2
Step-by-step explanation:
to get the length, we have to follow this equation:
2W + 2L = P
2(4) + 2L = 20
8 + 2L = 20
8 + 2(6) = 20
to get the area from this information, we have to follow this equation:
A = W • L
A = 4 • 6
A = 24m^2
lol also isn’t there a time limit on quizizz ?
Answer:
Ivan has 42 blue beads.
Step-by-step explanation:
We need to find how many blue beads Ivan has.
Blue beads = 6 times as many as red beans
b = 6r
r + b = 49
r + (6r) = 49
7r = 49
Divide both sides by seven to isolate r
r = 7
b = 6(7)
b = 42
Answer:
582 cause its right :)
Step-by-step explanation:
Answer: C(t) = 0.4t + 4
Step-by-step explanation:
Let t represent the total number of minutes of using a computer at the internet cafe.
The cafe charges an initial fee to use the computer and then an additional price per minute of usage. The initial charge to use the computers is $4 and the total charge would be $6 for 5 minutes of use. This is expressed as
5t + 4 = 6
5t = 6 - 4 = 2
t = 2/5 = 0.4
It means that the charge per minute would be $0.4
Therefore, the equation for the function C(t), representing the total cost of using a computer for t minutes at the internet cafe is
C(t) = 0.4t + 4
