Sorry i'm asking a lot of questions i just dont understand

answer:

maximum : 51

minimum: 12

median: 38

lower quartile: 19

upper quartile: 46

step-by-step explanation:

to answer this question, we first order the data from largest to smallest:

46, 19, 38, 27, 12, 38, 51

12, 19, 27, 38, 38, 46, 51

it can be seen that the maximum value is:

51

the minimum value is

12

let's call n the amount of data.

to calculate the quartiles we use the following formula:

so:

where is the data number 2.

q1 = 19

as the number of data is imapar, then, the median is the central data:

12, 19, 27, {38}, 38, 46, 51

median = 38

finally:

where represents the data number 6

answer:

step-by-step explanation:

all real numbers are solutions in both.

12(x2−x−1)+13(x2−x−1)=25(x2−x−1)

step 1: simplify both sides of the equation.

25x2−25x−25=25x2−25x−25

step 2: subtract 25x^2 from both sides.

25x2−25x−25−25x2=25x2−25x−25−25x2

−25x−25=−25x−25

step 3: add 25x to both sides.

−25x−25+25x=−25x−25+25x

−25=−25

step 4: add 25 to both sides.

−25+25=−25+25

0=0

answer:

as we know that if two   parallal line cut by a transversal   opposide angles are same and corisponging angle are same so < 1 and< 8 are same means< 1=< 8 so we can write 2x+35=10x-85

10x-2x=85+35     8x=120       x=120/8   x=15 ans is d. 15