I believe that it is a waxing gibbous and a waxing crescent
Below I have included an image that has the measure of all of the angles on it.
We can find the measures of the angles here due to the laws about complimentary angles. A pair of complimentary angles can be formed when 2 lines are perpendicular, and when added together, will always equal 90. The pair are the angles that are not directly adjacent from each other. In this figure, "x" and "(4x-10)" are a pair. According to another law, opposite angles, or adjacent angles, will always be equal to each other. Using the logic above is how we can find the measure of all angles.
Since one angle has a box, we know the lines are perpendicular, and that the laws of complimentary angles apply. We can also use that to see that the angle diagonal from it is equal to 90.
To solve for the other measures, we need to add the 2 equations together and set them equal to 90 (because of that law we talked about before).
x+(4x-10)=90
5x-10=90
+10+10
5x=100
/5 /5
x=20
Now that we know x equals 20, we can substitute that value in and solve.
x=20
=(4x-10)
=(4*20-10)
=(80-10)
=70
We also know this is correct because 20 and 70 equal 90.
Answer:
I think c
Explanation:
Without access to medicines, Africans are susceptible to the three big killer diseases on the continent: malaria, tuberculosis and HIV/AIDS.
Answer:
Do góc nhập xạ nên....
Mình nhớ mang máng như thế
Answer:
China is a very large country that has border with 14 countries. However, in this case only the Chinese landforms that serve as borders will be listed:
-The Himalayan mountain range in western China that serves as a border with Nepal.
-The Gobi desert, at the north of China which is the border with Mongolia.
-The Tibetan plateau in western China that borders on India, Bhutan and Nepal.
-The Manchurian plain to the northeast of China, is the largest plain of the country that borders North Korea.