Alan sees the star as being two times bigger than zorg does.
Answer:
x = 7, y = 2
Explanation:
Two triangles are said to be congruent if all three sides and three angles of one triangle is equal to three sides and three angles of the other triangle.
From the question:
BD ≅ BD (reflexive property of equality)
Since BD is the angle bisector of ∠ABC, hence ∠ABD = ∠CBD
∠ABD = 2x + y, ∠CBD = 14 + y. Therefore:
2x + y = 14 + y
2x = 14 + y - y
2x = 14
x = 14 / 2
x = 7
Also, ∠BAD = ∠BCD = 90° (right angled triangle)
Since ∠BAD = ∠BCD, BD ≅ BD and ∠ABD = ∠CBD, therefore ΔABD is congruent to ΔCBD by angle-angle-side congruence theorem.
The angle-angle-side congruence theorem states that if two angles and one side of one triangle is equal to two angles and one side of another triangle the both triangles are congruent.
ΔABD is congruent to ΔCBD, therefore AD = CD
5x - y = x + 13y
13y + y = 5x - x
14y = 4x
14y = 4(7)
y = 4(7) / 14
y = 2
Answer:
c. 2
Explanation:
Given that
Parent to daughter ratio = 1:3
Based on the above information, after considering the 1 half-life of radioactive isotope there is one-half of the real radioactive atoms of the parent left also the equivalent number of daughter atoms produced
Therefore after one half, the ratio between parent and daughter atom is 1:1
Now after the second half, half of the left parent atom would be transformed into the daughter cells
This remains a quarter of parent atom and 3 quarter of daughter atoms
So, the ratio of 1:3 would be shown after 2 half-lives
A jet stream is a fast flowing air current that occurs in the atmosphere of earth and other planets. A global wind belt is formed by the Earth's spin and the unequal heating of the earth via sunlight
Answer:
Explanation:
1. Geography helps us understand basic physical systems that affect everyday life: How water cycles and ocean currents work are all explained with Geography. These are important systems to monitor and predict in order to help lessen the impact of disasters. At the same time, these systems can be monitored for important resources to tap in to.
2. To learn the location of places and the physical and cultural characteristics of those places in order to function more effectively in our increasingly interdependent world: Given how global our modern marketplace is, it’s important to have an understanding of where countries and cultures are located relative to one another.
3. To understand the geography of past times and how geography has played important roles in the evolution of people, their ideas, places and environments: Geographical knowledge intersects with other subjects such as Biology and History and can help to gain a better understanding of the ‘big picture’ in these topics.