0.9 is the answer to this simple question
An = a1 + (n-1)*d
n = term to find = 30
a1 = first term = 20
d = common difference = 2
a30 = 20 + (30 - 1) * 2
a30 = 20 + 29 * 2
a30 = 20 + 58
a30 = 78
sn = (n (a1 + a30)) / 2
s30 = (30(20 + 78) / 2
s30 = (30(98) / 2
s30 = 2940/2
s30 = 1470 <===
Missing Information:
- Of the people in the group who support Candidate R, 58 percent are in favor of flat tax
- Of the people in the group who support Candidate T, 22 are in favor of a flat tax.
Answer:

Step-by-step explanation:
Given
--
in the total population
in group R
in group T
Required
Determine the number of people that supports T
First, the proportion of those that supports flax rate in R needs to be calculated.


So, those that favor flat tax rate in group R are:

Where N represents the total population.
Total number of people that supports the flax tax rate is gotten by adding people that support flat tax rate in each group.


Answer:
28 learners
Step-by-step explanation:
Boys : Girls
3 : 4
Since there are 12 boys and 3 units of them...
3 units = 12
1 unit = 12 ÷ 3 = 4
Girls =
4 units = 4 x 4 = 16
Total number of girls and boys: 12 + 16 = 28
Answer: Sue has 1 more brother than sisters
Step-by-step explanation: