Answer:
37.24
Step-by-step explanation:
ok so there's a strategy I got taught ready?
100%- 96.
38%-x
~cross multiply~
100x= 3724
÷100 ÷100
________________
x=37.24
Hope this helps :D p.s- i recommend using this strategy :D
Answer:
Therefore,
x = -13 , y = 17 or x = 12 , y = 42
Step-by-step explanation:
First, you have to form equation in terms of x and y. With the given informations, the equations will be :
![x - y = - 30](https://tex.z-dn.net/?f=x%20-%20y%20%3D%20%20-%2030%20)
![{x}^{2} + (y + 3) = 189](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%2B%20%28y%20%2B%203%29%20%3D%20189)
Next, you have to solve it by substitution :
![x = - 30 + y - - - (1)](https://tex.z-dn.net/?f=x%20%3D%20%20-%2030%20%2B%20y%20-%20%20-%20%20-%20%281%29)
![{x }^{2} + (y + 3) = 189 - - - (2)](https://tex.z-dn.net/?f=%20%7Bx%20%7D%5E%7B2%7D%20%20%2B%20%28y%20%2B%203%29%20%3D%20189%20-%20%20-%20%20-%20%282%29)
![(1)→(2)](https://tex.z-dn.net/?f=%281%29%E2%86%92%282%29)
![{( - 30 + y)}^{2} + (y + 3) = 189](https://tex.z-dn.net/?f=%20%7B%28%20-%2030%20%2B%20y%29%7D%5E%7B2%7D%20%20%2B%20%28y%20%2B%203%29%20%3D%20189)
![900 - 60y + {y}^{2} + y + 3 = 189](https://tex.z-dn.net/?f=900%20%20-%2060y%20%2B%20%20%7By%7D%5E%7B2%7D%20%20%2B%20y%20%2B%203%20%3D%20189)
![{y}^{2} - 59y + 714 = 0](https://tex.z-dn.net/?f=%20%7By%7D%5E%7B2%7D%20%20%20-%2059y%20%2B%20714%20%3D%200)
![(y - 42)(y - 17) = 0](https://tex.z-dn.net/?f=%28y%20-%2042%29%28y%20-%2017%29%20%3D%200)
![y = 17 \: \: or \: \: 42](https://tex.z-dn.net/?f=y%20%3D%2017%20%5C%3A%20%20%5C%3A%20or%20%5C%3A%20%20%5C%3A%2042)
![sub \: \: y = 17 \: \: into \: \: (1)](https://tex.z-dn.net/?f=sub%20%5C%3A%20%20%5C%3A%20y%20%3D%2017%20%20%5C%3A%20%5C%3A%20into%20%20%5C%3A%20%5C%3A%20%281%29)
![x = - 30 + 17 = - 13](https://tex.z-dn.net/?f=x%20%3D%20%20-%2030%20%2B%2017%20%3D%20%20-%2013)
![sub \: \: y = 42 \: into \: \: (1)](https://tex.z-dn.net/?f=sub%20%20%5C%3A%20%5C%3A%20y%20%3D%2042%20%5C%3A%20into%20%5C%3A%20%20%5C%3A%20%281%29)
![x = - 30 + 42 = 12](https://tex.z-dn.net/?f=x%20%3D%20%20-%2030%20%2B%2042%20%3D%2012)
Answer:
answer is option A. +4,-4
Answer:
the answer is 3(t+2)
Step-by-step explanation:
Answer:
$333.5
Step-by-step explanation:
First we have to find 45% of 230 and then add that value to 230
(we can also find 145% of 230, which is essentially the same thing)
so 45% of 230 is:
230*(45/100)= $103.5
230+103.5= $333.5