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LenaWriter [7]
3 years ago
6

Write an explicit formula for AN, the NTH term of the sequence 2, 4, 6

Mathematics
1 answer:
Leto [7]3 years ago
5 0

Answer:

2n.

Step-by-step explanation:

This an arithmetic sequence with a1 = 2 and d = 2

an = a1 + d(n - 1)

= 2 + 2(n - 1)

= 2n + 2 - 2

= 2n.

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The mean salary at a local industrial plant is 30,400 with a standard deviation of 4300.The median salary is 25,400 and 539th pe
andrew11 [14]
Whats the question i cant help untill u ask. u have to ask a question.
8 0
3 years ago
I need help on question 16 &amp; 17! <br> I don’t really understand how to solve it.
Sidana [21]

Answer:

y = 11

x = 8.6

Step-by-step explanation:

The small triangle with 30,32,y looks like right triangle

so according to formula a^2 + b^2 = c^2

so 30^2 + y^2 = 32^2

900 + y^2 = 1024

y^2 = 124 => y = 11

The larger triangle also looks like a right triangle

so according to formula a^2 + b^2 = c^2

(30 + 10)^2 + 22^2 = (32 + x)^2

1600 + 44 = (32 + x)^2

so (x + 32)^2 = 1644

x + 32 = 40.55

x = 40.55 = 32 = 8.55 = 8.6

8 0
3 years ago
The 8 foot diameter circular table has a 4 foot wide extension. What is the total area with the extension? How does the area com
galina1969 [7]

Answer: the total area with the extension S≈82,3 foot²,  S>S'.

Step-by-step explanation:

D₁=8 foot    D₂=10 foot    a wide extension = 4 foot.

1) Let the total area with the extension S is the area of the circular table S₁

plus a wide extension S₂.

Considere S₁:

R_1=\frac{D_1}{2} \\R_1=\frac{8}{2} \\R_1=4 foot.\\S_1=\pi* R_1^2\\S_1=\pi *4^2\\S_1=16*\pi \\S_1\approx50,3\  foot^2.\\

S_2=8*4\\S_2=32 \ foot^2.

S\approx50,3+32\\S\approx82,3 \  foot^2.

2)\ Considere S':

R_2=\frac{D_2}{2} \\R_2=\frac{10}{2} \\R_2=5 \ foot.\\S'=\pi *R^2\\S'=\pi *5^2\\S'=25*\pi \\S'\approx78,5\  foot^2.

S>S'.

Good luck an' have a nice day!

3 0
2 years ago
Please help me i really need help please help me please i really really need help please
sattari [20]

Answer:

117

Step-by-step explanation:

Okay, the problem is asking that we find the hypotenuse of this triangle (AKA, the lake.)

a²+b²=c²

A= 75

B= 90

C is always the hypotenuse.

75²+90²= c²

5,625+8,100= 13,725

√13,725= 117.15374513859981591194584103639

To the nearest whole number: 117

To the nearest tenth: 117.2

Hope this helps!

8 0
3 years ago
The difference of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b
PSYCHO15rus [73]
A-b=21
5a-2b=18

We can use substitution here. Take the first equation and solve for A. (Picking this one because it's easy)

a = 21+b

Plugin to the second equation:5(21+b)-2b=18
Simplify: 105 + 5b - 2b = 18
Simplify: 105 + 3b = 18
Subtract both sides: 3b = 18-105
Simplify: 3b = -87
Divide: b = -29

Plug back into the first: a=21+b
a = 21 - 29
a = -8

Option D

6 0
4 years ago
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