8x - 2y = -8
-5x + 2y = -1
3x = -9
x = -3
<span>You are given
John Davis’ rate which is $9.75 an hour. It is said that he works for four
hours on Monday, six hours on Tuesday, five hours on Wednesday, five hours on
Thursday, and seven hours on Friday. You are asked to find the gross pay of John
Davis. All you need to do is to multiply the rate to the hour of work.</span>
<span>
Monday: $9.75(4h)
= $39</span>
Tuesday:
$9.75(6h) = $58.5
Wednesday:
$9.75(5h) = $48.75
Thursday:
$9.75(5h) = $48.75
Friday:
$9.75(7h) = $68.25
<span>
To get the
gross pay, add everything and you will get $263.25. The answer is letter D.</span>
Sometimes there is division involved which may seem the same for the first two, but is different for the rest.
please choose brainliest :]
Answer:
-16
Step-by-step explanation:
-16... using d = b²-4ac
Lets say billiard balls are arranged in rows to form an equilateral triangle, then the first row consists of 1 ball, second row consists of 2 balls, and third row consists of 3 balls, and so on. So there must be 
balls in the 
row.
So, the total number of balls that forms the equilateral triangle with rows is:
Let 
and 
be the total number of balls in the first and second arrangements respectively.
Then,
It has been said that there were 11 lesser balls in the second arrangement:
Since, 
multiplying both the sides by 2
Therefore,
So, there were 125 balls at the set.
