What is the value of the expression 4.8 x 109

1.6 x 103

3.0 x 106

O 3.0 1012

О

3.2 x 108

3.2 x 1012

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

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.