Answer:
3999
Step-by-step explanation:
X=3, y=4
x=-2, y=9
Set x equal to anything, then isolate y to get the other number.
360 g plain flour
3 eggs
900 ml milk
$300
3%=.03 of something
Find .03 of 10000
10000x.03=$300
Complentary angles add to 90 degrees
a and b are complentary
a+b=90
a=7x+4
b=4x+9
so
7x+4+4x+9=90
combine like terms
11x+13=90
minus 13 both sides
11x=77
divide both sides by 11
x=7
m a =7x+4=7(7)+4=49+4=53
m b=4x+9=4(7)+9=28+9=37
angle a measures 53 degrees
angle b measures 37 degrees