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Vsevolod [243]
3 years ago
6

The number of camera phones shipped globally can be modeled by the function y = 1.28e 1.31x where x is the number of years since

1997 and y is the number of camera phones shipped (in millions). How many camera phones were shipped in 2002?
Mathematics
1 answer:
OlgaM077 [116]3 years ago
3 0

Answer: 895 phones

Step-by-step explanation:

Given that :

The function : y = 1.28e^1.31x ; is used to model the number of camera phones shipped since 1997

y = number of camera phones ; x = number of years since 1997

The number of camera phones shipped in the year 2002 can be obtained thus ;

x = 2002 - 1997 = 5 years

y = 1.28e^(1.31 * 5)

y = 1.28e^6.55

y = 1.28(699.24417)

y = 895.03254

y = 895 phones

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Lunna [17]
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8 0
2 years ago
Given (64y^2)+(4x^2)+128y+16x+64=0, transform the equation into the appropriate form
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Answer:

(8y+8)²+(4x²+16)=0

Step-by-step explanation:

Given:

(64y²)+(4x²)+128y+16x+64=0

Find:

Equation into the appropriate form

Computation:

(64y²)+(4x²)+128y+16x+64=0

(8y)²+(2x)²+128y+16x+64=0

(8y)²+(2x)²+2(8y)(8)+2(2x)(4) + 8²=0

(8y+8)²+(4x²+16)=0

6 0
3 years ago
$30 per hour it cut off pls help i give brainlest if it’s correct
tankabanditka [31]

Answer:

t  = 4 h

Step-by-step explanation:

Painter A   initial fee 40 $  and each hour charge 45 $

Painter B   initial fee 100 $ and each hour charge  30 $

The equations for painters are straight lines.

The initial fee is the intercept of the line with the y-axis ( painters receive 40 and 100 $ respectively and they have done nothing.

The equation for a straight line is:

y = m*x + b       where m is the slope and b the intercept with the y-axis

Then

Painter A     when x = 0  y = b = 40

And  each hour of work cost 45 $   then f  x = t  in hours

The equation for Painter A is   y  = 45*t  + 40

Similarly, the equation for Painter B is

y  = 30*t + 100

We have a two equations system, the solution will indicate when the two painters will charge the same amount of money

y  =  45*t  + 40      (1)

y  =  30*t  + 100     (2)

Equation 1 - equation 2

0  =  15*t  - 60

15*t  =  60

t  = 60/15

t  = 4 h

7 0
3 years ago
I BET NO ONE KNOWS THIS y varies jointly as x and z. y=20 when x=2 and z=5 . Find y when x=3 and z=6
Greeley [361]

Hello!

If y varies jointly with x and z, it'll mean that x and z are being multiplied by a factor "k", to equal y.

To give you a visual, this is what I mean.

y=kxz

That means we'll want to find k with the first point we're given: (2,20,5)

20=k(2)(5)

20=10k

k=2

Which means our equation is:

y=2xz

Now, let's plug in the x and z from the other point to find y.

y=2(3)(6)

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Hope this helps!

6 0
3 years ago
F(x) = 14 – 0.5x f(30)=​
love history [14]

Answer: f(30) = -1

You would substitute every X with 30

3 0
3 years ago
Read 2 more answers
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