Answer:
In order to subtract fractions, there must be a common denominator (the number on the bottom of the fraction). 7 and 3 can be multiplied to get 21 (a common factor). To get each fraction to have a denominator of 21, they can be multiplied by 3 and 7 respectively and then subtracted. Attached is an image of the problem worked out. I apologize for the messy handwriting. Hope this helps!
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Answer:
No
Step-by-step explanation:
A system of linear equations usually has a single solution, but sometimes it can have no solution (parallel lines) or infinite solutions (same line). This article reviews all three cases. One solution. A system of linear equations has one solution when the graphs intersect at a point.
Answer:
51,958
Step-by-step explanation:
1x1x1x1= 1 5x5x5x5= 625 3x3x3x3=81
1+625= 626
81+2= 83
626x83
Answer:
A)50°F = 10°C
B)75°C = 167°F
C)-40°C = -40°F
Step-by-step explanation:
A) 50°F = 10°C
Formula
(50°F − 32) × 5/9 = 10°C
B) 75°C = 167°F
Formula
(75°C × 9/5) + 32 = 167°F
C) -40°C = -40°F
Formula
(-40°C × 9/5) + 32 = -40°F
