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Nana76 [90]
3 years ago
8

Part A There is a function f, where f(n) 1200n+ 3500 represents the number of people in a town who owned a smartphone n years af

ter 2007. How many people owned a smartphone in this town in the year 2010? Enter your answer in the box.
Mathematics
1 answer:
mojhsa [17]3 years ago
3 0
7100 people as of 2010
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Please help me answer this with an explanation
Nata [24]
You need to find the slope first. (-9,-4). (3,4)

-4-4= -8
-9-3 =-12. Slope is -8/-12 or 8/12 or 2/3


Perpendicular is the negative reciprocal. Or flip over the 2/3 and make it negative.

The answer is - 3/2
5 0
3 years ago
Read 2 more answers
Alex purchased a new car for $28,000. The car's value depreciates 7.25% each year. What will be the value of the car 5 years aft
Zanzabum
The value would be 28,000*(1-0.0725)*(1-0.0725)*(1-0.0725)*(1-0.0725)*(1-0.0725)
which is 28,000*0,9275^{5}
which equals 28,000*0.6863=$19,219
6 0
3 years ago
If $18\sqrt 8-8\sqrt{18}=\sqrt n, what is n?
Ksivusya [100]

Answer:

288 trust me it is 100% right I tried it as an answer an got it right.

Step-by-step explanation:

4 0
3 years ago
The area of a rectangle is 144cm squared.if the length is 16cm. What's the perimeter?​
andreev551 [17]

Answer:

50

Step-by-step explanation:

rectangle area = 144 cm

Formula: A= L*H

The give the length which is 16

144 = 16*H

Since they gave u the area instead of the height, work backwards

144/16 = 16/16 *H

9 = H

Now you have the length and height

Length: 16

Height: 9

Perimeter is when you add up all the sides

The top and bottom of the rectangle is the length which is 16 so

16 + 16 = 32

The left and right side of the rectangle is the height which is 9 so

9 + 9 = 18

Now add then both

32 + 18 = 50

So the perimeter of the rectangle is 50

Hope this helped!

4 0
3 years ago
NEED HELP FAST PLEASE
natita [175]
Hey!


To solve this equation, we'd first have to apply the distributing rule to this equation.

<em>Original Equation :</em>
( 3a - 2 )^{2}

<em>New Equation {Changed by Applying the Distribution Rule} :</em>
( 3a )^{2} - 2 · 3a · 2 + 2 ^{2}

And now we simplify.

<em>Old Equation :</em>
( 3a ) ^{2}  -2 · 3a · 2 + 2 ^{2}

<em>New Equation {Old Equation Simplified} :</em>
9a ^{2} - 12a + 4

<em>So, the equation (3a - 2) ^{2} simplified is</em>  9a ^{2} - 12a + 4.

Hope this helps!


- Lindsey Frazier ♥
5 0
3 years ago
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