Answer:
t=4 seconds
Step-by-step explanation:
The height of the water jacket that is projected vertically upward is given by the equation:
We want to find the time that, the rocket reaches the ground.
When the rocket reaches the ground, the height , h becomes 0.
This implies that:
Subtract 20 from both sides:
Divide through by -5;
Take square root:
l
Therefore the feasible time is after 4 seconds.
Answer:
x = 4
Step-by-step explanation:
Isolate the x:
13x + 7 = 8x + 27
subtract 7 from both sides:
13x = 8x + 20
subtract 8x from both sides:
5x = 20
divide both sides by 5:
x = 4
3 inside angles = 180
so you have 2=42 and 3 = 52
so 5 = 180 -42-52 = 86 degrees
angle 5 and 6 need to equal 180
so 6 = 180-86 = 94 degrees
Answer is B
Answer:
Boys = 150
Girls = 315
Total Boys and Girls 465
Step-by-step explanation:
We call x the number of boys and we call y the number of girls.
So we have to find the total number of children
We know that
Now we substitute the second equation in the first and solve for y.
Now we find x.
Finally we have that:
Boys = 150
Girls = 315
Total Boys and Girls 465