A radical is also known as a square root. An example of a radical is √25 or ∛36.
Multiply the first equation by -2. It turns into 4x+18y=50 and the other one stays -4x-9y=-23. Then you "eliminate" the equations by "adding" them. Set it up like this:
4x+18y=50
+
-4x-9y=-23
4x-4x= 0. 18y-9y= 9y and 50-23= 27
SO: 9y= 27 and y= 3
And then you plug that in to one equation: 4x +18(3)= 50. 4x= 50-(18*3)
4x= -4, so x=-1.
Plug it back in to check!
Hope this helps. Happy solving! :)
Monday= 13.45
Tuesday=9.5
wednesday/Friday= x/3
1st. you add Monday and Tuesday
2nd. you subtract the total 42.6 with added numbers of step one
3rd. finally you divided the total of step 2 by 3
finally you shall receive your answer.
Answer:
1 7/24.
Step-by-step explanation:
7/8 + 3/4 - 1/3 The LCD of 3,4 and 8 is 24 so we have:
21/24 + 18/24 - 8/24
= 39/24 - 8/24
= 31/24
= 1 7/24.
