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Stels [109]
2 years ago
15

PLEASE HELP, Will give brainliest if u help and 38 points.

Mathematics
1 answer:
Alex787 [66]2 years ago
5 0

Step-by-step explanation:

a)

<u>The first laptop</u>

  • Initial value- $2000
  • Value loss - 14% every year
  • Function for value-  V(t) = 2000*0.86^t

<u>The second laptop</u>

  • Initial value- $1200
  • Value loss - 11% every year
  • Function- V(t) = 1200*0.89^t

b)

Monthly percent decrease

<u>The first laptop:</u>

  • 14%/12 = 1.16%

<u>The second laptop:</u>

  • 11%/12 = 0.92%

c)

The second laptop will lose less value in 5 years hence is better choice

See the graph attached

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Lisa wants to use her calculator to square a two-digit positive integer, but she accidentally enters the tens digit incorrectly.
Svetradugi [14.3K]

Answer: Correct two digit number= 24

Step-by-step explanation:

Let

x= tens digit (wrong one)

and y= zeroes digit

and z= tens digit (right one)

Now according to the statement,

(10x+y)² -  (10z+y)² = 2340

Simplifying this we get

(x-z)(5x+y+5z)= 117= 1 * 3 * 3 * 13

So it could either be

x-z=1 or x-z=3

If we take the x-z=1

then 5x+y+5z=117

which is not possible as maximum value we can get from this is 99.

This leaves us with x-z=3

so 5x+y+5z= 39

Put x=3+z

We get,

y+10z= 24

Now as y and z both are single digits so the only possible numbers to fit these are y=4 and z=2.

Put z=2 in x=3+z , we get x=5

So the numbers become 10x+y= 54

and 10z+y= 24

Their sum is 54+24=78

Check

54²-24²= 2340 so it is correct.

7 0
3 years ago
Which of the following units would be most appropriate to measure the height of a 20-story building?
Over [174]

Answer: it is miles bc centimeters and meters are too small

8 0
2 years ago
Can someone answer these pls
Vitek1552 [10]

the rate of growth will be 1.16

4 0
3 years ago
Read 2 more answers
I WILL GIVE BRAINLIEST TO THE CORRECT ANSWER!!
Andreas93 [3]

Answer:

htjjtjtjjtntnjtjjjjttkrkrkrkdkrk

8 0
2 years ago
I need help please please
Aliun [14]

Answer:

y= -4/3x +8

Step-by-step explanation:

well first you got to simply for equation

4x +3y = 24

so you subtract 4x to both sides and that gives you : 3y= -4y +24

then you divide everything by 3

and that leaves you with : y= -4/3x +8

and the graph just put a dot on 8 on the y axis then go down -4 and left 3

your welcome!!!!!!!!1

7 0
2 years ago
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