Answer:
- <u>Hannah was not speeding because her speed was about 61 mph, which is below the speed limit.</u>
Explanation:
Just to correct some typos, this is the complete question:
<em />
<em>The equation d=0.05v² + 1.1v models the distance, d, that it takes a car traveling at a speed of v miles per hour to come to a complete stop. If Hannah’s car stopped after travelling 250 feet on a highway with a speed limit of 65 mph, was Hannah speeding? Explain using math whether she was speeding and how you know.</em>
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<h2>Solution</h2>
<em />
To find whether Hannah was speeding, you must find the velocity that is solution for the equation:
<em />
Write it in standard form:
Use the quadratic formula:
The speed can only be positive; thus, it is about 61 miles per hour, which is below the speed limit of 65mph.
In conclusion, she was not speeding.
Solving the simultaneous equation show that the solution is inconsistent.
<h3>What is Inconsistent solution?</h3>
A simultaneous equation is said to have inconsistent solution when there is no value as the solution. This implies that no value of unknown will satisfy the equation.
Hence no value of x and y satisfies the equation.
4x -2y = 18 ______1
-4x + 2y = -18 ____2
from (1) make y the subject of formular
4x -2y = 18
2y = 4x - 18
y = 2x - 9 ______3
substitute y = 2x - 9 into 2
-4x + 2y = -18
-4x + 2 (2x - 9 ) = -18
-4x + 4x - 18 = -18
-4x + 4x = -18 + 18
0 = 0
This gives no solution hence the simultaneous equation is said to be inconsistent
Read more on inconsistent solutions here: brainly.com/question/15654281
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Answer:
B C D brainlest please
Step-by-step explanation:
x y
0 6
1 7
2 8
3 9
We can write it down as a fraction:
and we can simplify this fraction:
=
=
=
or we can write it as a decimal:
0.1282...
Answer:
solving a quadratic equation by factoring
using the quadratic formula
Step-by-step explanation:
