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
dem82 [27]
2 years ago
12

If f(1)=4 and f(n)= -2(n-1) -4 then find the value of f(5)

Mathematics
1 answer:
hoa [83]2 years ago
7 0

Answer: f(5) = 43

Step-by-step explanation:

You might be interested in
Solve this system of equations using substitution:
yanalaym [24]
I’m thinking your r in the first equation is actually an x.

X + 2(2x -4) =10

X +4x -8 =10

5x = 18

4 0
2 years ago
Help me with this question please! I’ll mark you brainlist and give 5 stars for this!
hoa [83]
First question is A
3 0
3 years ago
Read 2 more answers
Once again a picture,, please help me with this one, thank you!!
vazorg [7]

Answer:

1395

Step-by-step explanation:

5 surfaces of the cuboid can be seen,so 5*l^2

4 surfaces of triangle = 4* 1/2 * 15 * 9

5 0
3 years ago
Read 2 more answers
You are hiking on a trail that leads down from the top of a mountain. At 11 A.M. You are at an elevation of 5400 feet. At 3 P.M.
Tems11 [23]

Step-by-step explanation:

You hiked 5400 - 3800 = 1600 feet in 4 hours so the mean change is 1600 / 4 = 400 ft/hour.

5 0
3 years ago
A cylindrical package to be sent by a postal service can have a maximum combined length and girth (perimeter of a cross section)
dolphi86 [110]

Answer:

radius r = 47/π in

length l = 23.5 in

Step-by-step explanation:

Let us recall that:

Volume of a cylinder = \pi r^2 h --- (1)

The girth g = 2 \pi r + h      ----- (2)

Given that:

height (h) + girth (g) = 141

Then g = 141 - h   ----- (3)

Equating equation (2) and (3), we have:

141 - h = 2πr + h

2h = 141 - 2πr

h = 70.5 - πr      ------ (4)

From, here now, we can now replace the value of h into equation (1)

i.e.

V = πr²(70.5 - πr)

V = 70.5πr² -  π²r³

Taking the differential of the above equation with respect to r, we have:

\dfrac{dv}{dr} = 141 \pi r- 3\pi ^2 r^2

By further differentiation:

\dfrac{d^2v}{dr^2} = 141 \pi - 6\pi ^2 r

Let set \dfrac{dv}{dr}= 0, Then:

141πr - 3π²r² = 0

141πr = 3π²r²

Divide both sides by πr

141 = 3πr

r = 141/3π

r = 47/π in

Replacing the value of r = 47/π into equation (4), we have:

h = 70.5 - πr

h = 70.5 - π(47/π)

h = 70.5 - 47

h = 23.5 in

From equation (3);

h + g = 141

23.5 + g = 141

g = 141 - 23.5

g = 117.5 in

Volume = πr²h

V = π × (47/π )² × 23.5

V = 16523.94 in³

4 0
3 years ago
Other questions:
  • the expression 1000(1.1)^t represents the value of a $1000 investment that earns 10% interest per year, compounded annually for
    14·1 answer
  • Find the equation, in vertex form, for a parabola with a vertex of (2,-5) that goes through the point (3,4).
    13·1 answer
  • Triangle ABC has vertices at A(4, 2), B(1, 2), and C(4, 6) in the coordinate plane. The triangle will be rotated 270∘ counterclo
    7·1 answer
  • I want to know what equals this problem 21 = 1 + 10x
    8·2 answers
  • Which statement best explains whether the table represents a linear or nonlinear function? Input (x) Output (y) 2 5 4 10 6 15 8
    12·1 answer
  • What’s the largest fraction: 7/8, 5/8, 7/13, and 11/19
    11·1 answer
  • What was the approximate percent decrease in the price of her groceries due to the coupons?
    14·1 answer
  • McKenna needs to build a window frame. She needs 2 pieces of lumber that are 4 34 feet long and 2 more that are 3% feet long. Ho
    7·1 answer
  • Graph (1,-3) on a grid
    7·1 answer
  • Find the slope of the line. y = 5/3x + 4
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!