Replace a and b with their number value:
2a^2 + 5b = 2(3)^2 +5(4)
do the 3^2 first: 3^2 = 9
so now you have 2(9) +5(4)
now multiply both sets of numbers: 2 x 9 = 18 and 5 x 4 = 20
now add them:
18 +20 = 38
If you draw a circle out and divide it into eighths or fourths, you can see that 2/8 equals 1/4.
Or you could just do equivalent fractions and since the denominator 4, you have to multiply that by 2 to get the denominator of 8 so you have to do the same with the numerators. 1 times 2 equals 2 so 1/4=2/8
Is this confusing i hope it isn't Hope this helps!
I believe the answer is 2C-11
Answer:
A. the median of the lower half of a data set ordered from least to greatest
Step-by-step explanation:
The first quartile can best described as the median of the lower half of a data set ordered from least to greatest.
Let us explain this with an example, say you're given a set of numbers: {1, 2, 5, 8, 9, 12, 15, 16, 20, 23, 25, 28, 32, 36, 42}. The median for the set is 16, the first quartile is going to be the median of the first half which is 8.
