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Sav [38]
3 years ago
13

If f(n)=n*2-n, then f(-4)is

Mathematics
1 answer:
katen-ka-za [31]3 years ago
5 0

Answer:

20

Step-by-step explanation:

f(n)=n^2-n

f(-4)=(-4)^2-(-4)

f(-4)=16+4

f(-4)=20

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Find the volume. Round to nearest hundredth
AlladinOne [14]

Answer:

2pir^2 + 2pirh

2(pi)(3.2)^2+2pi(3.2)(8)

=225.19

=225.2

8 0
2 years ago
The temperature in Anchorage, Alaska at 6 a.m. was 2°C. If the temperature drops 2 degrees each hour, what is the temperature in
Alchen [17]

Answer:

-14°C

Step-by-step explanation:

6 + 8 = 14

So in 24 hour time that would be 2pm

From 6am to 2pm is 8 hours

If the degrees is going down by 2 you would times the 8 by 2 because it is doubled

That = 16

Then you'll minus 16°C from the 2°C

2°C - 16°C

= -14°C

4 0
3 years ago
The formula s= sqrt SA/6
ikadub [295]
For this case we have the following equation:
 s = root (S.A / 6)
 Substituting values we have:
 For S.A = 180:
 s = root (180/6)
 s = root (30)
 For S.A = 120:
 s = root (120/6)
 s = root (20)
 s = root (4 * 5)
 s = 2 * root (5)
 Subtracting both values we have:
 root (30) - 2 * root (5)
 Answer:
 
root (30) - 2 * root (5)
 
option 2
3 0
3 years ago
Find the surface area of a cylinder with a base radius of 2 in and a height of 5 in
Vsevolod [243]

Answer:

r = 2 \\ h = 5 \\ a = 2\pi \: rh + 2\pi {r}^{2}  \\  = 2\pi \times 2 \times 5 + 2\pi {2}^{2}  \\  = 20\pi + 8\pi \\  = 28\pi \\  = 28 \times 3.14 \\  = 87.92 {unit}^{2}  \\ thank \: you

7 0
3 years ago
There are 12 triangles and 3 squares. What is the simplest ratio of<br> squares to triangles?
grigory [225]
Squares : Triangles
3 : 12
Divide both sides by 3.
The simplest ratio is

1 : 4
4 0
3 years ago
Read 2 more answers
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