What is the vertex of the graph of this equation y = 2x2 + 8x-24?
1 answer:
You might be interested in
The speed of wind and speed of plane in still air are 23 and 135 km/h respectively.
<u>Step-by-step explanation:</u>
Let the speed of wind and speed of plane in still air are w and p km/h respectively.
The effective speed on onward journey was
................(1)
The effective speed on return journey was
..............(2)
Adding equation (1) and equation (2) we get,
⇒
⇒
⇒
Putting value of in
we get:
⇒
⇒
⇒
Therefore ,The speed of wind and speed of plane in still air are 23 and 135 km/h respectively.
Since she runs 6 miles each day and there 7 days per week, you will have to multiply 6
times 7.
But since you have to use distributive properties, multiply like this (6)(7)
6 is equal to
Now turn 7 into a fraction, so its
Now multipy (6)(
)
Multiply the numerators, so its 7 * 13 which gives you 91 and multiply the denominators so its 1 * 2 which gives you 2.
Put that back into a fraction as
Divde it to change it to a mixed number and the answer is 45