X + y = 20 ---> x = 20 - y
2.5x + 3.7y = (3.5)(20) = 70
--> 2.5(20-y) + 3.7y = 70
--> 50 -2.5y +3.7y = 70
--> 1.2y = 20
---> y = 16.66
Answer: 16.66 gallons
Answer:
1. x<3
2. x<3
Step-by-step explanation:
2x-5<1
Move constant to the right side and change its sign
2x<1+5
Add the Numbers
2x<6
Divide both sides of the inequality by 2
x<3
3x+7<16
Move constant to the right side and change its sign
3x<16-7
Subtract the numbers
3x<9
Divide both sides of the inequality by 3
x<3
Answer:
The equivalent expressions are:
Step-by-step explanation:
Given equation for finding area of a trapezoid:
where 
represents area, 
represents height and 
represents the base lengths of the trapezoid.
Evaluating by rearranging the equation to find an equivalent equation.
Multiplying both sides by 2.
Dividing both sides by 
Evaluating 
by rearranging the equation to find an equivalent equation.
Multiplying both sides by 2.
Dividing both sides by
Subtracting both sides by 
Answer:s=6
Step-by-step explanation:
3 ( s + 4) = 30
3s+12=30
3s=18
s=6
The correct answer is the One fired from from 60° . This is because the projectile fired from 60° has a greater vertical velocity compared to the one fired from 30° and therefore spends more time on air. Vertical velocity is the velocity of a body as it moves upwards, it is normally affected by the gravitational acceleration, however it is not affected by the horizontal velocity.
