A chemical company makes two brands of antifreeze. The first brand is 35% pure antifreeze, and the second brand is 60 percent pure antifreeze. In order to obtain 110 gallons of a mixture that contains 45 percent antifreeze, how many gallons of each brand of antifreeze must be used? First brand: second brand:

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°