Answer:
-1/20
Step-by-step explanation:
r/2 + s/r - r/4 + 1/5 =
= -1/2 + 0/(-1) - (-1)/4 + 1/5
= -1/2 + 1/4 + 1/5
= -10/20 + 5/20 + 4/20
= -5/20 + 4/20
= -1/20
Answer:
A system of
equations with infinitely many solutions would be represented on a graph
by parallel lines.
True
or
False
It would be True
Step-by-step explanation:
A + b = 13
22 a + 18 b = 258
------------------------
a = 13 - b
22 * ( 13 - b ) + 18 b = 258
286 - 22 b + 18 b = 258
- 4 b = 258 - 286
- 4 b = - 28
b = ( - 28 ) : ( - 8 ) = 7
a = 13 - 7 = 6
Answer:
6 tour packages a and 7 tour packages b were sold.
Answer:
C. 15
Step-by-step explanation:
1. First, let's solve the system of equations; 
Solve -m - n = 5 for m.
Substitute -n - 5 for m in m - n = -3.
Substitute -1 for n in m = -n - 5.
2. Okay, now that we know m = -4 and n = -1, let's solve for m^2 -n^2.
Therefore, the answer is C. 15!
Answer:
7.5 gallons
Step-by-step explanation:
you do 180 divided by 40 = 4.5
you then do 105 divided by 35=3
you then add 4.5 gallons and 3 gallons to get 7.5 gallons
