Answer:
hi
Step-by-step explanation:
We see a set of linear equations. Hence, a system of linear equations. So we solve them by process of elimination, multiplying the top equation by 5 to eliminate first such that
(2x+y=20)*5
6x-5y=12
-----------------------------------------
10x+5y=100
6x-5y=12
--------------------------------
16x = 112 .............After dividing 16 we get
x = 7
Now we plug x = 7 back into the original first equation to obtain the y value such that
2(7) + y = 20
12 + y = 20
-12 -12
------------------
y = 8
I hope this helped!
Interesting, middle school math? Wow.
Use the formula a^x/n=
![\sqrt[n]{a}^x](https://tex.z-dn.net/?f=%20%5Csqrt%5Bn%5D%7Ba%7D%5Ex%20)
Making the equation look like this 54
![\sqrt[3]{c}^2](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7Bc%7D%5E2%20)
(54c)^2/3 is
![\sqrt[3]{(54c)^2}](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B%2854c%29%5E2%7D%20)
Answer:
tanA = 
Step-by-step explanation:
tanA = 
= 
= 
=
Answer:
1. Allans brother is 19
2. $18.75
Step-by-step explanation:
1. 11 x 2= 22 - 3= 19
2. $1.05 x 15= $15.75
$15.75 + $3 = $18.75
