Step-by-step explanation:
9x+2=6
9x+2-2=6-2
9x=4
9x/9=4/9
x=0.44
Answer:
y = 
Step-by-step explanation:
Multiply each side by 6/5
Simplify
Answer:
Step-by-step explanation:
Let's say
d1 the outflow of the first pump
d2 the outflow of the second pump
V=1 is the volume of the tank
Since the second pump takes twice as long as the first to fill the tank,
Two pumps can fill a pool tank in 26 hours when working together:
How long does it take the first pump alone to fill the tank:
Answer: 55°
explanation: all angles in a triangle must add up to 180°. Create an equation and solve for x:
x + 50° + 75° = 180°
x = 55°
X=area of the country A
y=area of the country B
we saggest this system of equations:
x+y=178,973
x=y+373
we solve this system of equations by substitution method.
(y+373)+y=178,973
2y=178,973-373
2y=178600
y=178,600/2=89,300
x=y+373
x=89300+373=89,673
answer:
area of the country A=89,673 Km²
area of the country B=89,300 Km²
To check
The combined land area of the countries A and B is =89,673 Km²+89,300 Km²=178,973 Km²
Country A (89,673 Km²) is 373 Km² more larger than country B (89,300 Km²).
89,673 Km²=89,300 Km²+373 Km²
