Answer:
C
Step-by-step explanation:
the answer for this question is
-2 and 6
Have you considered applying the Law of Cosines?
For angle B: b^2 = a^2 + c^2 - 2ac*cos B
a, b and c are all known, leaving cos B as the only unknown. Find cos B, and then find angle B itself. From the diagram we know that angles A, B and C are all acute.
So for the first problem;
You will take the cost of the glue $2.39 and take away the cost of the tape. Which is $1.99


So the answer to problem 1. will be $0.40 more.
For the second problem;
We will add the cost of the markers together, then add the cost of the paper onto that.



Leaving the second answer to be $12.39.
Answer:
Option 2, 3, 4
Step-by-step explanation:
It cannot be the 1st option because a linear function doesn't have an
and adding an x to an x will not make it squared. ax + by = c is the linear equation.
It can be the 2nd option because the quadratic formula is f(x) = a
+ bx + c and the middle portion could cancel when adding 2 together.
It can be option 3, because f(x) = a
+ bx + c plus ax + by = c could give you the resulting function f(x) = -3
+5
It can be option 4 because multiplying ax + by = c by ax + by = c would give you an
.
It cannot be option 5 because a
+ bx + c multiplied by a
+ bx + c would give you a function with 
Hope this helped! similar triangles have proportional lengths, so each side can be compared with one another.