Answer:
684. tbh I'm not sure if I did this right
Step-by-step explanation:
4x2= 8
4+8= 12
12x2= 24
24x28= 672
672+12= 684
Standard form is just putting (in this case) variables in alphabetical order. First we simplify- 2x+4=4y would become 1/2x+1=y. This is already in standard form, as numbers w/o variables come at the end. simplifying the next one is more tricky. first you get a variable/number alone-
9-2x-2y=4x+3
9-2y=6x+3
6-2y=6x
1-1/3y=x
1=x+1/3y
3=x+y
x+y=3
sorry if I was wrong and not of any help, But I do believe this is correct.
Answer:
0.083
Step-by-step explanation:
Hope it helps.
Sierra<3
Answer:

Step-by-step explanation:
since sin theta = 3/4, opposite length = 3 units and hypotenuse length = 4 units
by pythagoras' theorem, adjacent length = 
thus cos theta = adjacent/hypotenuse = 
The answer is C, because 10.5(10 1/2) x 7.5 (7 1/2) x 2.5 (2 1/2)= 196.875= 196 7/8