Answer:
No.
Step-by-step explanation:
We substitute the values x = 2 and y = -4 into the inequality.
Left side = 2(2) - 3(-4) = 4 + 12
= 16
Now the right side is 15 so we get 16 < 15 which is incorrect.
So (2, -4) is not a solution.
9514 1404 393
Answer:
2000
Step-by-step explanation:
Expanded form:
80 × (20 + 5)
Partial products:
80 × 20 = 1600
80 × 5 = 400
Sum of partial products: 1600 + 400 = 2000.
Answer:
See method below.
Step-by-step explanation:
m/n + n/3 = 2
2/m + n = 4
First eliminate the fractions by multiplying the first equation by 3n:-
3m + n^2 = 6n...........(1)
and the second equation by m:-
2 + mn = 4m..............(2)
Now we solve using substitution:-
From equation (2):-
4m - mn = 2
m = 2 / (4 - n)
Now substitute for m in equation (1):-
6/ (4 - n) + n^2 = 6n
6 + n^2(4 - n) = 6n(4 - n)
6 + 4n^2 - n^3 = 24n - 6n^2
n^3 - 10n^2 + 24n - 6 = 0
This will not factor so we could solve this using graphical software.
To find the values of the variable m we substitute the found values of n into one of the original equations and solve for m.
Answer: 80%
Explanation 4/5=.8
The oldster got a discount, so the original price is higher; let's call it x;
Answer: $14.00
