Hi, hope your having an amazing day so this is the question I'm struggling with...so thought you could help maybe?

A customer bought a package of 12 cookies for $5.40 at a bake sale. The customer also bought additional cookies at
$0.50 per cookie. The total cost of the cookies was $8.40. Which equation represents how you would determine how many additional cookies were purchased?

A. 12+0.50x= 8.40
B. 5.40x + 0.50= 8.40
C. 5.40 + 0.50x =8.40
D. 64.80 + 0.50x = 8.40

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.

In δabc shown below, ∠bac is congruent to ∠bca: triangle abc, where angles a and c are congruent given: base ∠bac and ∠acb are congruent. prove: δabc is an isosceles triangle. when completed (fill in the blanks), the following paragraph proves that line segment ab is congruent to line segment bc making δabc an isosceles triangle. (4 points) construct a perpendicular bisector from point b to line segment ac . label the point of intersection between this perpendicular bisector and line segment ac as point d: m∠bda and m∠bdc is 90° by the definition of a perpendicular bisector. ∠bda is congruent to ∠bdc by the definition of congruent angles. line segment ad is congruent to line segment dc by by the definition of a perpendicular bisector. δbad is congruent to δbcd by the line segment ab is congruent to line segment bc because consequently, δabc is isosceles by definition of an isosceles triangle. 1. corresponding parts of congruent triangles are congruent (cpctc) 2. the definition of a perpendicular bisector 1. the definition of a perpendicular bisector 2. the definition of congruent angles 1. the definition of congruent angles 2. the definition of a perpendicular bisector 1. angle-side-angle (asa) postulate 2. corresponding parts of congruent triangles are congruent (cpctc)