A) rate of change would be dividing the number of songs wanted (150) by the number of weeks downloading (5)
150/5 = 30
since the total quantity wanted is becoming less every week the rate of change would be negative so it becomes -30
Initial value is 150, which is the total number of songs they want
B)
to write an equation find 2 points on the graph the line passes through:
<span><span>lets use p1(0, 150), p2(1, 120)
</span><span>
calculate the slope:
m = (y2- y1)/(x2 - x1) = (120 - 150)/(1 - 0)
m = -30
and now use line equation in form point-slope:
y - y1 = m(x - x1)
y - 150 = -30(x - 0)
y = -30x + 150</span></span>
The line segment which represents 2 7/16 inches should first be drawn with the use of a ruler.
<h3>What is a Ruler?</h3>
This is referred to an instrument which is used to measure distances between points or draw straight lines and also usually graduated in inches.
On the inches graduation, the zero mark should be located and the 1/16 inch which is found before the half-inch mark between 2 and 3 inches. When this is done, a line should be drawn to meet both points which will therefore measure 2 7/16 inches long.
Read more about Ruler here brainly.com/question/18558504
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Answer:
a or b will work
Step-by-step explanation:
c does not work it is out of order and does not look right
it does not work for d it is far to inpricece
Answer:
see explanation
Step-by-step explanation:
1
(x + 5)² = 4 ( take the square root of both sides )
x + 5 = ±
= ± 2 ( subtract 5 from both sides )
x = - 5 ± 2, thus
x = - 5 - 2 = - 7
x = - 5 + 2 = - 3
--------------------------------------------
2
(x + 6)² = 7 ( take the square root of both sides )
x + 6 = ±
( subtract 6 from both sides )
x = - 6 ±
, thus
x = - 6 - ![\sqrt{7}](https://tex.z-dn.net/?f=%5Csqrt%7B7%7D)
x = - 6 + ![\sqrt{7}](https://tex.z-dn.net/?f=%5Csqrt%7B7%7D)
------------------------------------------------
3
(x - 2)² = 18 ( take the square root of both sides )
x - 2 = ±
= ±
= ± 3
( add 2 to both sides )
x = 2 ± 3
, thus
x = 2 - 3![\sqrt{2}](https://tex.z-dn.net/?f=%5Csqrt%7B2%7D)
x = 2 + 3![\sqrt{2}](https://tex.z-dn.net/?f=%5Csqrt%7B2%7D)
Answer:
the total area is 155 + 23.75 +23.75 = 202.5
Step-by-step explanation:
rectangle = 15.5 times 10 =155
tryangle 1 = 4.75 times 10 divided by 2=23.75
tryangle 2 = 23.75