Answer:
Step-by-step explanation:
b
XZ ~ UW
UV ~ XY
VW ~ YZ
Take any corresponding side and the ratio of it is your answer.
Example :
XZ / UW = 14/ 2 = 7
XY / UV = 21 / 3 = 7
YZ / VW = 28 / 4 = 7
Therefore, your answer is B. 7
The object takes 12 minutes to land on the ground.
Explanation:
Given that the equation for the object's height s at time t minutes after the launch is 
We need to determine the time that it takes for the object to land on the ground.
<u>Time taken:</u>
The time t of an object can be determined by substituting 
Thus, we have,

Switch sides,
Thus, we get,

Let us solve the equation using the quadratic formula.




Thus, the values of t are
and 
Simplifying, we get,
and 
and 
Since, the value of t cannot be negative, then 
Thus, the object takes 12 minutes to land on the ground.
Answer:
Jonny have 100 dollars and he gave his 2 friend's $20 how much does he have left?
Step-by-step explanation:
100-40=60
Jonny has 60 dollars left