The answer would be the last option
Answer:
Galileo Galilei is often credited with being the first astronomer to build a telescope. However, the first telescope was built by Hans Lippershey in the early 1600s. He focused his telescope while reducing the amount of light it emitted. Lipperhey was a German-Dutch glassmaker. He inspired others to work on improving the telescope through his model.
Explanation:
Answer:
Water and the chemicals it contains are constantly being exchanged between the land surface and the subsurface. Surface water seeps into the ground and recharges the underlying aquifer—groundwater discharges to the surface and supplies the stream with baseflow.
Explanation:
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.
Answer:

Explanation:
Given that,

We need to find the area of sector QRS. The formula for the area of a sector is given by :

QR = RS = r = 17 units
So,

So, the area of sector QRS is 