There are a total of 297 students in the 7th grade. Rough estimates would say that about half of that number are boys and half are girls. Asking only 50 random girls would be biased because not only would it not be all of the girls (the number of girls would be around 148 or 149) but it would also be ignoring the roughly 148 to 149 boys there are on estimate. The sample would be biased because it would be ignoring the opinions of more than half the seventh grade.
Answer:
6m+−3
Step-by-step explanation:
Let's simplify step-by-step.
6m+2−5
=6m+2+−5
Combine Like Terms:
=6m+2+−5
=(6m)+(2+−5)
=6m+−3
Answer:
2 times. (2.0727272727)
Step-by-step explanation:
Proportion: 
Cross-multiply. 1 x 57 = 57. 27.5 x X = 27.5X
Get X by itself. 57 / 27.5 = x = 2.072727...
About two times.
Yeah when we are the Jews and this is so weird what’s going on so we’re only seven so please stop
Answer:
x = 8
Step-by-step explanation:
In a circle if two chord intersects as shown in figure
and length of a chord at point of intersection is a and b
and length of another chord at point of intersection is c and b
a*b = c*d
using this relation here, we have
8*(x+7) = 10 * (4 +x)
=> 8x + 56 = 40 + 10x
subtracting 40 and 8x from both sides
=>8x + 56 - 8x -40= 40 + 10x -8x -40
=> 16 = 2x
=> x = 16/2 = 8
Thus, x = 8
