Answer:
x = 4.9t²
Step-by-step explanation:
x is directly proportional to t²
x = kt²
When t = 2 , x = 19.6
Substitute into the equation
x = kt²
19.6 = k * 2²
19.6 = k * 4
19.6 = 4k
k = 19.6/4
k = 4.9
Substitute the value of k into the equation:
x = kt²
x = 4.9t²
Answer:
She should used 4.5 ounces of the 4% and 1.5 ounces of the 20%.
Step-by-step explanation:
x = amount of 4% fuel
6 - x = amount of 20% fuel
0.04x + 0.2(6 - x) = 0.08(6) Multiply both sides by 100 to remove the decimals
4x + 20(6 - x) = 8(6)
4x + 120 - 20x = 48
-16x + 120 = 48
-16x = -72
x = 4.5
She should used 4.5 ounces of the 4% and 1.5 ounces of the 20%.
Answer:
t<-25/2
Step-by-step explanation:
move the constant to the right hand side and change the sign
-2t>20+5
add the numbers
-2t>25
20+5=25
divide both sides of the inequality by-2ans flip the inequality sign
t<-25/2
Answer t<-25/2
Answer:
B. 5 miles
Step-by-step explanation:
Let the miles in 1 hour be x
According to the question,
25 miles = 5 hours
x miles = 1 hour
x miles = 25 miles / 5 hours
x = 5 miles
Hope it helps!
The answer is 2,100. since there are 3 feet in 1 yard, you would multiple 700 by 3.
