What is 2.15% of 22?
2 answers:
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Answer:
a =
Step-by-step explanation:
4a -16 = a - 15
both left and right -a
then
4a - 16 -a = a - 15 -a
then
4a -a -16 = a -a -15
then
3a -16 = -15
both left and right + 16
then
3a -16 + 16 = -15 + 16
then
3a = 1
both left and right ÷3
then
3a ÷ 3 =1 ÷ 3
then
a =
Exercise 4
A grow from 13.1 millions to 14.4 millions means to grow
millions. So, the question is: which percentage of 13.1 is 1.3? Well, we have to find a number x such that
Solving for x, you have
Exercise 5
27% is a bit more than 25%, which is a quarter. So, we expect to find a pie chart with one slice occupying roughly one quarter of the pie. The example that best suits this requirement is B (A is almost half, and C is less than one quarter).