Answer:
x = 2
Step-by-step explanation:
Given
8(4 - x) = 7x + 2 ← distribute parenthesis on left side
32 - 8x = 7x + 2 ( subtract 7x from both sides )
32 - 15x = 2 ( subtract 32 from both sides )
- 15x = - 30 ( divide both sides by - 15 )
x = 2
Answer:
Speed of river's current = 5 mph
Step-by-step explanation:
Let 'd' be the distance covered
Let x be the speed of the rivers current
Speed upstream = 15-x
speed downstream = 15+x
Time = distance / speed
time upstream = 
time downstream = 
the ferry trip upstream takes twice as long as its return trip downstream
= 
divide both sides by d
= 
cross multiply
Add 2x on both sideds
subtract 15 from both sides and divide by 3
x=5
Speed of river's current = 5 mph
Answer: 25%
Step-by-step explanation:
Boy =50%
Girl =50%
Girl + Girl =25%
Answer:
Move 6.2 units up
Step-by-step explanation:
(-5.4, 6.2)
The first coordinate is the x coordinate
Positive x moves to the right, negative x moves to the left
Move 5.4 units to the left
The second coordinate is the y coordinate
Positive y moves to up, negative y moves down
Move 6.2 units up
There are 18 in Nevada.
Multiply 55% by 40, and you get the amount for California. (Which is 22.)
Subtract 40 by 22, and you get 18.
Hope this helps!
