Answer:
The median is 9
Step-by-step explanation:
The median is the number in the middle. The middle of this is 8 and 10, so you plus them and divide by to 2, then it gives 9, so the median is 9.
X+y=3
x-y=21
x=3-y
3-y-y=21
-2y+3=21
-2y=18
y=-9
x = 3-(-9) = 12
Two numbers are 12 and -9.
Hope this helps.
Answer:
43%
Step-by-step explanation:
There are 39 girls. 21 of them like biology. 11 out of 34 who like chemistry are girls.
No. of girls who prefer biology = 21
There are (100-39) boys. 16 of them like physics. (34-11) of them like chemistry.
No. of boys who prefer biology = 100-39-16-34+11
= 22
Percentage of students who prefer biology =
× 100%
=
× 100%
= 43%
Answer:
D. x=3
Step-by-step explanation:
Answer:
R < 1
Step-by-step explanation:
- Subtract 4 from each side, so it now looks like this: R < 1
I hope this helps!