3 years ago

HELP IM ABOTH TO FAIL

Mathematics

1 answer:

natali 33 [55]3 years ago

3 0

Answer:

f(12) = 1680

Step-by-step explanation:

Substitute n = 12 into f(n) , that is

f(12) = 250 + 130(12 - 1) = 250 + 130(11) = 250 + 1430 = 1680

You might be interested in

MakcuM [25]

Answer: C) 4.20

Explanation:

Multiply each value with its corresponding frequency:

1*450 = 450
10*35 = 350
50*10 = 500
100*4 = 400
400*1 = 400

Add up the products

450+350+500+400+400 = 2100

Then divide this over the total frequency (450+35+10+4+1 = 500)

So we get 2100/500 = 4.20 as the expected value.

4 0

2 years ago

A circle with its dimensions, in meters (m), is shown. What is the area, 0/1 in the meters, of the circle? Use 3.14 for pie. Rou

Vikentia [17]

Answer:21

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Use index notation to write 248 as a product of its factor

kiruha [24]

Answer:

2^3 x 31

Step-by-step explanation:

31 is a prime number

5 0

2 years ago

julia help the teacher clean the tables in the classroom she notices that 1/4 of the tables are blue and 3/4 of the table are re

Anestetic [448]

Answer:

????????im i dont know

Step-by-step explanation:

7 0

2 years ago

Determine the open intervals on which the graph of f(x) = x - 4cos x is concave upward or concave downward

bazaltina [42]

The graph of the function $f(x)$ is

concave upward, when $f''(x)>0;$
concave downward, when $f''(x)$

Find $f''(x):$

$f'(x)=(x-4\cos x)'=1+4\sin x;$

$f''(x)=4\cos x.$

Now:

1. when $4\cos x>0,$ the graph of the function is concave upward and this is for

$x\in \left(-\dfrac{\pi}{2}+2\pi k,\dfrac{\pi}{2}+2\pi k\right), \text{ where } k\in Z.$

2. when $4\cos x$ the graph of the function is concave downward and this is for

$x\in \left(\dfrac{\pi}{2}+2\pi k,\dfrac{3\pi}{2}+2\pi k\right), \text{ where } k\in Z.$

6 0

3 years ago