Answer:
Scientists used major changes in life forms in the fossil record to form the geologic time scale.
Answer:
B) an earthquake
Explanation:
An earthquake is one of the most dramatic triggers of sudden mass movements.
From the choices given, an earthquake is the most correct solution.
The slope formula is y = mx + b, where m is the slope and b is the y-intercept. So, the answer to this question would be -3.
Answer:
Full question is attached.
Tommy's reasoning is wrong because the hypotenuse is not 5 feet.
A skateboard ramp resembles a right angles triangle so its sides resemble that of a right angled triangle.
The height of 3 feet would be the height of the triangle.
The length of 5 feet would be the length of the triangle.
The piece of plywood that would cover the top of the frame would be the hypotenuse.
In using the Pythagoras rule, the c is the hypotenuse but Tommy made the mistake of assuming that the hypotenuse was b which is where the error came from.
Instead of solving for b, they should have been solving for c which is the hypotenuse.
a² + b² = c²
3² + 5² = c²
9 + 25 = c²
c² = 34
c = √34
c = 5.83 feet
They should use a plywood of 5.83 feet not 4 feet.