A ∠A and ∠ B ∠B are vertical angles. If m ∠ A = ( x + 23 ) ∘ ∠A=(x+23) ∘ and m ∠ B = ( 5 x − 9 ) ∘ ∠B=(5x−9) ∘ , then find the measure of ∠ B ∠B

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

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.°