1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
neonofarm [45]
3 years ago
6

The number of streetlights in a town is growing linearly. Four months ago (n = 0) there were 130 lights. Now (n = 4) there are 1

46 lights. If this trend continues, a. Find an explicit formula for the number of lights in month n b. How many months will it take to reach 200 lights?
Mathematics
2 answers:
beks73 [17]3 years ago
6 0
Easy
find equation
y=mn+b
for n=0, y=130
130=m0+b
130=b

y=mn+130
also
n=4 for 146
146=4m+130
minus 130 both sides
16=4m
divide by 4 both sides
4=m


y=4n+130

find n for y=200

200=4n+130
minus 130 both sides
70=4n
divide both sides by 4
17.5=n

answer is 17.5 months
stich3 [128]3 years ago
4 0

13.5 months

146-130=16

16/4=4

200-146=54

54/4=13.5

You might be interested in
On a recent test, Ahmed knew many of the answers, but there were four questions he was unsure of. In each of the four questions,
Vinil7 [7]

Answer:

It is impossible to simulate this with a random number generator without knowing what the correct answer choices were

Step-by-step explanation:

Given

Questions = 4

Options = 5

Required

How can he select the right answer

Using randint will only generate a random number which could or could not be the answer to the question.

This is so because each of the 5 options for the question has the same probability of 1/5. So, using randint will only generate a random number. This generated random number has 1/5 chance of being the answer and 4/5 of not being the answer to the question.

In a nutshell, he can not make use of a simulator to select the answer to the questions in this scenario, unless he knows the solution.

<em>Hence (a) answers the question.</em>

3 0
2 years ago
Please Help! Show all the steps!
likoan [24]

You can start by subtracting different equations from each other.

3x + 2y + 3z = 1

subtract

3x + 2y + z = 7

2z = -6

divide by 2

z = -3

add the following two expressions together:

3x + 2y + z = 7

3x + 2y + 3z =1

6x + 4y + 4z = 8

subtract the following two expressions:

6x + 4y + 4z = 8

5x + 5y + 4z = 3

x - y = 5

^multiply the whole equation above by 3

3x - 3y = 15

subtract the following two expressions:

3x - 3y = 15

3x + 2y = 10

-5y = 5

divide each side by -5

y=-1

take the following expression from earlier:

x - y = 5

substitute y value into above equation

x - - 1 = 5

2 negatives make a positive

x + 1 = 5

subtract 1 from each side

x = 4

Therefore x = 4, y = -1, z = -3

I checked these with all 3 equations and they worked :)

(it's quite complicated, comment if you don't understand anything) :)

7 0
3 years ago
Step-by-step square root of 79
alex41 [277]

Answer:

79 does not have a defined square root.

4 0
3 years ago
I really need the help please and thank you
eimsori [14]

Asnwer: C

-------------------------------------

3 0
3 years ago
Nimisha wants to draw a wheel like the one shown. Each shaded part of the wheel should be one-third of each unshaded part. What
ivolga24 [154]

Answer:

Each shade has a 22.5 degree angle from the middle

Each unshaded has a 67.5 degree angle from the middle.

Step-by-step explanation:

You can solve this by making each unshaded part equal to x and each shaded part equal 1/3x it is a circle so it has to equal 360 so you end up with:

x + 1/3x + x + 1/3x + x + 1/3x + x + 1/3x = 360

Combine Like terms:

16/3x = 360

Multiply both sides by the opposite:

(3/16) (16/3x) = (360) (3/16)

x=135/2 or x=67.5

Then you can plug 67.5 in for x:

1/3x ---> 1/3(67.5) = 22.5

3 0
3 years ago
Other questions:
  • Use a net to find the surface area of the open cylinder with only one base. Use 3.14 for pi.
    10·1 answer
  • Which side of the equation 12.6v = 12 - 15.5v would you isolate the variable terms? Why?
    7·1 answer
  • In angle L M N the measure of angle L is equal to the measure of angle M. The measure of angle N is twice the measure of angle M
    11·1 answer
  • Roberto shares a bag of almonds with 2 friends. He shares 1/8 bag with Jeremy and 2/8 bag with Emily. He eats 3/8 bag of the alm
    10·1 answer
  • What is the solution of the linear-quadratic system of equations?<br> y=x^2+5x-3<br> y-x=2
    10·2 answers
  • Jamie has 7/10 of a pound of
    12·1 answer
  • Do any three points not on the same line always, sometimes, or never determine a plane? Explain
    7·1 answer
  • Caitlin was knitting scarves to give as gifts. If she uses 6 balls of yarns for three scarves, how many balls does she need for
    15·2 answers
  • Please tell me b. Do not want to think right now. Thanks.
    6·1 answer
  • Write an exponential equation to model this graph.<br> PLEASE HELP
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!