Unable to focus but joyful.
She's the main girl in Sound of Music basically lol.
Think about what the question is asking in a visual. The bottom of the ladder is 11 feet away from the building. That would be the run of the slope. The top of the ladder is 19 feet above the ground. That would be the rise of the slope.
Slope =
=
Since the 19 is the rise and the 11 is the run, you can simply just plug in the numbers to find the slope. This would be:
Therefore, the slope is
.
Hope this helps! :)
Answer:
Aqueducts
First developed around 312 B.C., these engineering marvels used gravity to transport water along stone, lead and concrete pipelines and into city centers. Aqueducts liberated Roman cities from a reliance on nearby water supplies and proved priceless in promoting public health and sanitation.
Concrete
Many ancient Roman structures like the Pantheon, the Colosseum and the Roman Forum are still standing today thanks to the development of Roman cement and concrete. The Romans first began building with concrete over 2,100 years ago and used it throughout the Mediterranean basin in everything from aqueducts and buildings to bridges and monuments. Roman concrete was considerably weaker than its modern counterpart, but it has proved remarkably durable thanks to its unique recipe, which used slaked lime and a volcanic ash known as pozzolana to create a sticky paste. Combined with volcanic rocks called tuff, this ancient cement formed a concrete that could effectively endure chemical decay. Pozzolana helped Roman concrete set quickly even when submerged in seawater, enabling the construction of elaborate baths, piers and harbors.
Answer:
The Bering Land Bridge.
Explanation:
Alaska and Asia are separate now, but during the ice age, the situation was not the same. Approximately 20,000 years ago, large areas of the continental shelf were exposed, and sea levels dropped because the water was locked up in glacial ice. Thus forming the Bering Strait land bridge that connected Asia and Europe to North America. Early humans may have migrated across this land bridge. Humans began to migrate across the bridge about 12,000 Years ago, and it is believed that they were following migrating mammals. The landmass was approximately 2,000 kilometers wide across the Bering Strait and connected Siberia, and Alaska much of what is known about this land bridge comes from bio-geographical evidence showing connections between species on Asia and North America.
