The measures of the angles of △abc are given by the expressions in the table.

angle measure
a (4x−13)°
b 15°
c (x + 18)°
what are the measures of angles a and c?

enter your answers in the boxes.
m∠a=
º

m∠c=
º

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Identify the number as a rational or irrational.explai. 291.87