X+y=156
<span>0.05x+0.25y=21.6
-1/4*/ x+y=156
1/20x+1/4y=216/10
-1/4x-1/4y=156*-1/4=-39
</span>1/20x+1/4y=216/10
<span>+--------------------------
-4/20x=-17,4
x=87
</span>x+y=156
<span>
87+y=156 y=69
this question answer is </span><span>87 nickels and 69 quarters</span><span>
</span>
ANSWER
EXPLANATION
We need to use the Pythagoras Theorem to find the height of the triangle.
Take positive square root to get;
Area =½bh
What is the question?????
Number of lawn mowing = x.
His cost per lawn for fertilizer = $6.
His cost per lawn for labor = $14.
Total cost per lawn for fertilizer and per lawn for labor for him = 6+14 = $20.
He charges = $25 per lawn.
So, profit per lawn = 25 - 20 = $5.
Therefore, for mowing x number lawn could be represented by polynomial that represents his weekly profit.
<h3>a) P(x) = 5x.</h3>
b) For mowing 40 lawns per week total profit would be
P(40) = 5(40) = $200.
c) Number of weeks an year = 52.
Therefore,
<h3>Annual profit is 52 * 200 = $10400.</h3>
A <em>parameter </em>is a number describing a whole population (e.g., population mean), while a <em>statistic </em>is a number describing a sample (e.g., the sample mean).
