Height in feet is represented by
The height of the ball is 0 feet when it hits the ground.
So we replace height f(x) by 0 and solve for x to find the time taken to reach the ground
( divide by -16 on both sides)
Now factor it
(x-6)(x+1) =0
x-6 =0 and x+1=0
x=6 and x=-1
Time cannot be negative so we ignore -1
x = 6 seconds
It will take 6 seconds for the ball to reach the ground.
Answer:
120*2.75*60/5280
= 3.75
Step-by-step explanation:
So James is walking at 120 steps a minute, there are 60 minutes in one hour, and 5,280 feet in a mile. So, to find how quickly James is walking, we multiply how many steps he is taking a minute by how much distance each step is (120 * 2.75) that gives us how much distance in one minute, so we then multiply by 60 because there are 60 minutes in one hour. Then divide the entire equation by how many feet are in one mile (5,280) giving us the answer 3.75 miles per hour. And the equation 120*2.75*60/5280
The simplest answer is 0 if u actrually do the work if u have to sneak a calculator in XD
Answer:
Number of students who correctly describe the process = 112 students.
Step-by-step explanation:
<em>From the information provided in the question;</em>
<em>64% correctly described the process of photosynthesis.</em>
<em>63 students didn't describe correctly the process of photosynthesis.</em>
We are to find the number of students that did correctly describe the process of photosynthesis.
First of all we need to find the total number of students.Lets represent this value to be x
percentage of students who incorrectly describe the process = (100-64)%
=36%
x= 63*100/36
x=175 students.
FIRST METHOD
Number of students who correctly describe the process =
=
Number of students that correctly describe the process = 112 students.
SECOND METHOD
Number of students who correctly describe the process = Total number of students- number of students who didn't correctly describe the process
Number of students who correctly describe the process = 175-63
Number of students who correctly describe the process = 112 students.
11. x = 10, so DCE is 72. You get the measurement of x by adding 7x + 2 and x + 8 to equal 90. When you get x, you plug it in to the equation for DCE.
12. x = 17. KNM is 131. Get the measurement of x by adding both equations again, this time equaling it to 180 since it is a straight line and doesn't have a right angle. Plug in the x to the equation for KNM.