<span>4x + 3y = 16
7x + 6y = 31
Note what happens if we mult. the first eqn. by -2:
-8x - 6y = -32
Combining this with the 2nd equation eliminates the variable y:
</span>-8x - 6y = -32<span>
7x + 6y = 31
--------------------
-x = -1, or x = 1. Sub 1 for x in either of the 2 given eqns to find y:
For example: 4(1) + 3y = 16, so 36 = 12, and y = 3. Sol'n is (1,3).</span>
Answer to this problem will depend upon the set of questions given with the worksheet or page having question "What do you call a female bug that floats math worksheet answer key?".
You haven't provided the set of questions but i can explain about how to get the answer of the name of bug in that sheet.
Look at the sample picture of similar problem that is attached with the answer. You have to solve the given set of problem and fill the correct matching answer in the blank box.
Say answer of first problem is choice named "T" then fill the letter "T" in the blank box numberd "1".
Same way solve other problem and fill correct name of the letter in each blank boxes.
Now rearrange letters in your answer box in increasing order of numbers 1 to 15. The resulting name will be the final answer for the name of the bug.
x = 3 ; y = 1
Given:
y = -2x + 7
y = 1/3x
Substitute y by its value to find x.
y = y
1/3 x = -2x + 7
x = (-2x + 7) ÷ 1/3
x = (-2x + 7) * 3/1
x = -6x + 21
x + 6x = 21
7x = 21
7x/7 = 21/7
x = 3
Substitute x by its value to solve for y.
y = -2x + 7
y = -2(3) + 7
y = -6 + 7
y = 1
y = 1/3 x
y = 1/3 * 3
y = (1*3)/3
y = 3/3
y = 1
:
The percent increase is found by finding the difference between the two prices and then dividing that different by the beginning price.
For this example it would be 65-39= $26. So $26/$39(the starting price) is 0.666... This is equivalent to about 66.67%. So, the price of the card increased by about 66.67%