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
Snowcat [4.5K]
3 years ago
8

F (n + 1) = f(n) – 2. If f(1) = 18, what is f(5)?

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
7 0
F(1)=18
f(2)=18-2=16
f(3)=16-2=14
f(4)=14-2=12
f(5)=12-2=10
You might be interested in
Geometry page 1 help please !
victus00 [196]

Answer:

16) y=\frac{1}{4}x +5

17) y = -x - 4

18) y = -2x - 1

19) y = -2x

20)y=\frac{-5}{3} -3

Step-by-step explanation:

With the two points you find the slope using \frac{y_{2}-y_{1}  }{x_{2}-x_{1} }

Then using that slope, plug the slope in with one of the points values of x and y into the point slope formula, and smiplify that into the y-intercept formula.

6 0
3 years ago
The brand manager for a brand toothpaste must plan a campaign designed to increase brand recognition. He wants to first determin
bulgar [2K]

We need to find out how many adults must the brand manager survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage.

From the given data we know that our confidence level is 90%. From Standard Normal Table we know that the critical level at 90% confidence level is 1.645. In other words, Z_{Critical}=1.645.

We also know that E=5% or E=0.05

Also, since, \hat{p} is not given, we will assume that \hat{p}=0.5. This is because, the formula that we use will have \hat{p}(1-\hat{p}) in the expression and that will be maximum only when \hat{p}=0.5. (For any other value of \hat{p}, we will get a value less than 0.25. For example if, \hat{p} is 0.4, then 1-\hat{p}=0.6 and thus, \hat{p}(1-\hat{p})=0.24.).

We will now use the formula

n=(\frac{Z_{Critical}}{E})^2\hat{p}(1-\hat{p})

We will now substitute all the data that we have and we will get

n=(\frac{1.645}{0.05})^2\times0.5(1-0.5)

n=(32.9)^2\times0.25

n=270.6025

which can approximated to n=271.

So, the brand manager needs a sample size of 271

3 0
3 years ago
What is 5.316 - 1.942 (show ur work) Thanks
KATRIN_1 [288]
Answer: 3.374

You subtract 5.316 from 1.942 and get 3.374

Hope this helps :)
4 0
2 years ago
Read 2 more answers
Round your answer to the nearest tenth if necessary. Use 3.14 for it.
aliina [53]

Answer:

volume = 10,082.5 in³

Step-by-step explanation:

radius = 26/2 = 13

volume = πr²L = (3.14)(13²)(19) = 10,082.54 in³

6 0
3 years ago
A line includes the points (4, 8) and (3, 5). What is its equation in slope-intercept form? Write your answer using integers, pr
stich3 [128]

Answer:

A line includes the points (4, 8) and (3, 5) whose equation in slope-intercept form will be :

y=3x-4

Step-by-step explanation:

The point slope form: (x_1,y_1) and(x_2,y_2)

(y-y_1)=m(x-x_1)

where : m = Slope of the line

m=\frac{y_2-y_1}{x_2-x_1}

A line includes the points (4, 8) and (3, 5).The equation of the line will be:

m=\frac{5-8}{3-4}=3

(y-8)=3\times (x-4)

y-8=3x-12

y=3x-4

(y=mx+c), where c is intercept at y axis.

The above equation represents slope-intercept form of the line.

6 0
3 years ago
Other questions:
  • Jill bought a pound of strawberries for $4.00. What is the price, in dollars, per ounce of strawberries? (1lb = 16 oz)
    10·2 answers
  • Describe how the product of 0.4 × 2 would look on a ten-square grid. The product would have _____ squares shaded out of 10.
    15·1 answer
  • jordan is making a model of Mount Saint Helens for a science project. The height of the actual volcano is about 2,500 meters. Sh
    7·1 answer
  • Maricel is programming an archery component of a new video game. In her code, she has created an "auto aim" feature that helps p
    11·2 answers
  • How many sections will a paper have if you fold it seven times??? Asking this because my math book says so... :/
    9·1 answer
  • Calculate the total budget and then fill in the missing percentages. You will use some of the answers given more than once. Tota
    5·2 answers
  • Help me ASAP for this question
    7·1 answer
  • What is the equation of this line?<br><br> y=3x−2<br><br> y=13x−2<br><br> y=2x−3<br><br> y=12x−3
    15·1 answer
  • How to be good at math??? ​
    11·1 answer
  • If a cylinder has a volume of 300 m3 and a radius of 5 m, what is its height (in meters)? (Round your answer to two decimal plac
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!