To check the answer, sub in 67 for x and 25 for y in both equations...because for it to be a solution, it has to satisfy both of the equations.
(67,25)...x = 67 and y = 25
x + y = 92
67 + 25 = 92
92 = 92 (correct)
y = 3x - 4
25 = 3(67) - 4
25 = 201 - 4
25 = 197 (incorrect)
so (67,25) is NOT a solution to this system of equations because it does not satisfy both of the equations
Answer:
x = 21°
Step-by-step explanation:
Triangle = 180°
Angle YXZ = 34°
Angle XZY = (x + 104)°
Angle x = ?
34° + x° + 104° + x° = 180°
138° + 2x° = 180°
2x° = 180° - 138°
2x/2 = 42/2
x = 21°
5x + 25y = 60....multiply by -3
3x + 15y = 42....multiply by 5
-------------------
-15x - 75y = - 180 (result of multiplying by -3)
15x + 75y = 210 (result of multiplying by 5)
-------------------add
0 = 30...incorrect.....this system has no solutions
Answer:
0.03
Step-by-step explanation:
<u>Brand A: 11 fluid ounces and costs $2.31</u>
2.31 / 11
0.21 per fluid ounce
<u>Brand B: 15 fluid ounces and costs $2.70</u>
2.70 / 15
0.18 per fluid ounce
<u>Subtract: </u>
0.21 - 0.18
0.03
Answer: 0.03
Answer:
B. 0.5*7
Step-by-step explanation:
remember the rule bracket off divide multiply add subtract or BODMAS