<span>1.
4 cardinals because:
6 mockingbirds : x cardinals = 9 mockingbirds : 6 cardinals
6*6 / 9 = 4
2.
2 cardinals because:
5 blue jays : x cardinals = 15 blue jays : 6 cardinals
5*6 / 15 = 2
3.
30 mockingbirds because;
20 cardinals : x mockingbirds = 6 cardinals : 9 mockingbirds
20*9 / 6 = 30</span>
The answer is 42 because they are going by ones 40,41,42
The expression 30 + 12 can be rewritten as 2x(13+8)
Answer:
B.11.4
Step-by-step explanation:
The sum the 3 angles of a triangle add to 180 degrees
5x+8x+2x+9 = 180
15x+9 =180
Subtract 9 from each side
15x+9-9 =180-9
15x = 171
Divide by 15
15x/15 =171/15
x =11.4