Answer:
0.8 hours
Step-by-step explanation:
From the question;
- Speed of Min-jun is 27 miles per hour
- Distance covered is 21 miles
We need to determine the time he takes to cover the distance given;
We need to know that;
Speed = Distance ÷ time
Rearranging the formula;
time = Distance ÷ speed
Thus;
Time = 21 miles ÷ 27 miles per hour
= 7/9 hours
= 0.8 hours
Thus, he took 0.8 hours to cover the distance covered
X^ 2 = 12^2 + 6^2
x^2 = 144 + 36
x^2 = 180
x = 6<span>√5
or
x = 13.42</span>
Answer:
25%
Step-by-step explanation:
6400/1600=4
1/4= 25%
The correct option is (2)
For any quadratic equation: ax2 + bx + c = 0.
The complex roots are expressed in the form a ± bi.
where a is the real part
& b is the imaginary part.
Since, one root is √7 + 5i, therefore the other root will be of the form <span>√7 - 5i.
Hence, option (2) is correct.</span>
Two equations are given
b+t <=9
30b + 20t > 200
WE graph each inequality
b + t <= 9
Make a table for b + t < = 9
b --- > t
0 --> 9
2 --> 7
Plot the point and make a graph. WE shade the bottom region because we have <= symbol
The graph is attached below.
WE graph the inequality
30b + 20t > 200
Make a table for 30b + 20t > 200
b --- > t
0 --> 10
6 --> 1
Plot the point and make a graph. WE shade the upper region because we have > symbol
The intersection of shaded region is our solution.