For these, we just have to expand then collect like terms.
1) 4x^+2x+4x+2 ~ 4x^+6x+2
2) 6x^+12x+2x+4 ~ 6x^+14x+4
3) 6x^+12x+3x+6 ~ 6x^+15x+6
4) 5x^+5x+2x+2 ~ 5x^+7x+2
Hope these help, have a great day
Answer:Y=0 Y=-3
Step-by-step explanation:
Answer:
60.96 cm
Step-by-step explanation:
To find the amount Chester needs using his centimeter ruler, convert 2 feet into inches and then into centimeters.
Each foot has 12 inches so 2*12 = 24 inches. 2 feet is 24 inches.
To find the number of centimeters, 24 inches * 2.54 cm = 60.96 centimeters
Answer:
3 full miles; anything less than 4 miles
Step-by-step explanation:
5 + 2.50x = 15
subtract 5 from both sides
2.50x = 10
divide both sides by 2.50
x = 4
4 miles is how long he can travel by spending all $15
Anything less will cost him less than $15
Answer:
Time in the air t₁ = 7 s
Time in the sea t₂ = 5 s
Step-by-step explanation:
We will use the equation: v = d/t , where:
v is the average speed,
d the distance traveled, and
t time doing the trip
From v = d/t ⇒ d = v*t
Therefore, if we call t₁ time in the air, and t₂ time in the sea, according to problem statement, we have:
t₁ + t₂ = 12 (1)
16*t₁ + 3*t₂ = 127 (2)
A two equation system, from equation (1) we get
t₂ = 12 - t₁
And by substitution in equaton (2)
16*t₁ + 3 * ( 12 - t₁ ) = 127
16*t₁ + 36 - 3*t₁ = 127
13*t₁ = 91
t₁ = 91 /13
t₁ = 7 s
And t₂ = 12 - 7
t₂ = 5 s