Answer:
30
Step-by-step explanation:
20+2(3*7 - 4*4)
20+2(21-16)
20+2*5
20+10
30
Answer:
x = 2
y = -1
Step-by-step explanation:
y = 2x - 5
y = -2x + 3
2x - 5 = -2x + 3
4x = 8
x = 2
y = 2(2) - 5
y = -1
Answer:
see explanation
Step-by-step explanation:
(1)
(a)
sin(a) = 
= 
(b)
cos(a) = 
= 
(c)
tan(a) = 
= 
----------------------------------------------------
(2)
(a)
sin(b) = =
(b)
cos(b) = =
(c)
tan(b) = = 
This is hard to write... I hope this makes sense to you...
3x-2y=-39
x+3y= 31
We want to use elimination therefor, we need to either get our x or our y to add together to get zero.
To do this, we will multiply -3 to (x=3y=31)
NEW EQUATION
3x-2y=-39 PLUS
-3x-9y= -93 Equals
Answer: -11y= -54
y= 4.9
Plug in to solve for x (put new y in)
3x-2(4.9)=-39
x= -9.73
Debbie will need to purchase 2 gallon bottles of juice since there are 128 fluid ounces in one gallon.
