Answer: The second graph
In all but the 3 graphs, the data is perfectly symmetrical. This means that the mean and the median would be the same.
However, in the second graph the data is skewed to the right. This means that the mean would also be skewed to the right due to the larger scores there. Using the median in this case would give a clearer picture of the data.
Solutions
There are three methods to solve this problem :-
<span>Substitution
</span>
<span>Elimination
</span>
<span>Matrix
</span>
To solve this problem we will use substitution.
Calculations
⇒ Lets solve for the variable x in x+3y=5
→ x+3y = 5
⊄ Subtract 3y from both sides ⊅<span>
</span>→ <span>x = 5−3y
</span>Substitute <span><span>x=5−</span>3y</span> into <span>x−3y =−1
</span>⇒ Start with the original equation<span>
</span><span>x−3y=−1
</span>
⇒ Let <span>x=5−3y
</span><span>5−3y−3y=−1
</span>
⇒ <span>Simplify
</span><span>5−6y=−1
</span>Solve for y<span> in </span><span>5−6y=−<span>1
</span></span><span>y=1
</span>
Substitute <span>y=1</span><span> into </span><span>x=5−3y
</span><span>x=2
</span>Therefore,
<span><span>x=2
</span></span><span><span>y=1</span></span><span>
</span>
They are not like terms because like terms must have the same variables. 8x^2y and -5xy^2 do not have the same variables. If the question was 8x^2y and -5xy^2 then it would be like terms.
X=hamburgers
y=hotdogs
3y+2x=8.00
AND
2y+3x=8.25
Now we've got a system of equations!
Choose a method to solve it, and I think you'll be good from there.
If you need more guidance to the answer, tell me in the comments.
BEST OF LUCK:)
When multiplying or dividing, make sure you know how many sigfigs are in your factors. The factor with thes least amount of sigfigs is the one you want to know. When you get your final answer, make sure you have the same amount of sigfigs that the factor had.
Example
34.07 has 4 sigfigs
6.4 has only two
34.07x6.4=218.048
But we only want two sigfigs so 218.048 becomes 220