7 T-shirt’s and a hat costs £67.00 5 T-shirt’s and a hat costs £49.00 how much does a t shirt cost?

Find the cosine function that is represented in the graph.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

Check image and write the letter of the answer