Answer:
Proportional
Step-by-step explanation:
Let's test this out. So for example you have the fractions: 12/30 and 18/?
Let's solve for ?
12 - 18
30 - ?
Solve: 30×18÷12=45
In the problem it also said 45 on the bottom, so yah they are proportional.
The missing justification in the proof is
<span>B) Substitution property of equality
The expression for sin</span>² x and cos² x is substituted to the other side of the equation. Since sin x = a/c, then sin² x = a²/c². Similarly, since cos x = b/c, then cos² x = b²/c². Adding to two results to the third statement.
<span>-2×5+-8
We carry out the multiplication first.
-2 × 5 = -10
</span><span>-2×5+-8
= -10 + -8
+(-) = -
</span>
<span> -10 + -8 = -10 - 8 = - (10 + 8) = -18
I hope this helps.</span>
Answer:
9
Step-by-step explanation:
Hello,





I don't know what i have to do for the last one.
Hope this helps !
Photon