I don't know it but how do yo save the pictures on screenshots
Answer:
you didnt add any ranges.. let me know the ranges and i can help you out :)
Step-by-step explanation:
Answer:
x = -6
Step-by-step explanation:
x^2 +12x +36=0
What 2 numbers multiply to 36 and add to 12
6*6 = 36
6+6 = 12
(x+6) (x+6) = 0
Using the zero product property
x+6 = 0 x+6 =0
x=-6 x=-6
Since they are the same we only list the solution once
To solve this problem, we know that the formula for average
speed is:
average speed = total distance travelled / total time
Now let us first calculate for the total distance
travelled. Calculating:
total distance travelled = (70 km / hr) * 2 hr + (63 km /
hr) * 5 hr
total distance travelled = 140 km + 315 km
total distance travelled = 455 km
Now for the total time:
total time = 2 hours + 5 hours
total time = 7 hours
Hence, the average speed is therefore:
average speed = 455 km / 7 hours
<span>average speed = 65 km / hr</span>