Answer:
x = -2, y=1
Step-by-step explanation:
x-7y=-9---------------------equation 1
-x+8y=10-------------------equation 2
From equation 1, make x the subject of formula
x=7y-9----------------------equation 3
substituting x=7y-9 in equation 2,
-(7y-9)+8y=10
Expanding bracket
-7y+9+8y=10
Collecting like terms
8y-7y=10-9
y=1
substituting y=1 in 3
x=7(1)-9
x=7-9
x=-2
Answer:
47.5 degrees Farenheit
Step-by-step explanation:
the problem says temperature drops 1.8 deg F for every thousand feet. 3,000 ft of altitude will be achieved so that would to find the amount of deg the temperature will decrease we need to multiply 1.8 X 3, which is 5.4 degrees. subtract 5.4 degrees from 52.9 and you get 47.5 degrees at 3,000 ft of altitude
A!
hope this helps you out
I assume this is 8 and 1/4 percent.
![8 \dfrac{1}{4} \% =](https://tex.z-dn.net/?f=%208%20%5Cdfrac%7B1%7D%7B4%7D%20%5C%25%20%3D%20)
![= 8 + \dfrac{1}{4} \%](https://tex.z-dn.net/?f=%20%3D%208%20%2B%20%5Cdfrac%7B1%7D%7B4%7D%20%5C%25%20)
![= 8.25 \%](https://tex.z-dn.net/?f=%20%3D%208.25%20%5C%25%20)
![= \dfrac{8.25}{100}](https://tex.z-dn.net/?f=%20%3D%20%5Cdfrac%7B8.25%7D%7B100%7D%20)
![= 0.0825](https://tex.z-dn.net/?f=%20%3D%200.0825%20)
The crust and the core both have a circular/spherical shape that is formed naturally