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.
In order to solve this problem, we first need to find the side lengths of the square. We know that the area of a square is one length squared, so we can set up this equation:
200 =
We solve this by taking the square root of both sides.
So, one side of the square is 14.14cm. To finish this problem, we apply the pythagorean theorem. We can do this by drawing in the diagonal to make a triangle (shown in attachment - the blue part in the second drawing is the section that we use. Please note that the drawing is not to scale)
The pythagorean theorem is
, where c squared is the diagonal of a right triangle. A squared and b squared are the other two sides. We can now plug in our numbers.
So, the diagonal length is 20 cm.
Answer:
The answer is no this number is not rational.
Step-by-step explanation:
Because, To show that the rational numbers are dense:
It cannot be expressed as a fraction with integer values in the numerator and denominator. When an irrational number is expressed in decimal form, it goes on forever without repeating.
Please post your question.
Answer:
C)
Step-by-step explanation:
In a parallelogram, if one angle is 90 (right angle), then it is a rectangle