Answer:
The time it takes for the cannonball to hit the ground is 6.49 seconds.
Step-by-step explanation:
You know that the height of the cannonball above the ground, h, in meters, in time, t, in seconds, is found by the function h(t) = -4.9t² + 30.5t + 8.4. You want to calculate the time it takes for the cannonball to hit the ground, that is, the time it takes for the bullet to reach zero height. So, being h(t) = 0 you have:
0 = -4.9t² + 30.5t + 8.4
To solve a quadratic function 0=a*x² + b*x +c, the expression is applied:
In this case, being a = -4.9, b =30.5 and c =8.4 you have:
Solving you get:
t1= -0.26 seconds and t2=6.49 seconds
Since time does not have a negative value, then <u><em>the time it takes for the cannonball to hit the ground is 6.49 seconds.</em></u>
X=hamburgers
y=hotdogs
3y+2x=8.00
AND
2y+3x=8.25
Now we've got a system of equations!
Choose a method to solve it, and I think you'll be good from there.
If you need more guidance to the answer, tell me in the comments.
BEST OF LUCK:)
Answer:
The measurement found using Ruler 2 is more accurate and more precise.
Step-by-step explanation:
Ruler 1 has fewer tick marks, Ruler 2 has more which indicates a more precise, exact, accurate reading.
Perpendicular slope = -1/3
y = mx + b (-5,2)
2 = -1/3(-5) + b
2 = 5/3 + b
so
b = 2-5/3
b = 1/3
equation
y = -1/3x + 1/3
answer is B
Answer:
<em>Hi There the correct answer to this is (2,9)</em>
Hope it helps!