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maksim [4K]
2 years ago
6

Please help! Consider the sequence {20, 17, 14, 11, 8, 5, 2...}.

Mathematics
1 answer:
Sloan [31]2 years ago
6 0

Answer:

c.) 38

Step-by-step explanation:

\sum\limits_{n=3}^6 a_n   means "summation of the all the elements starting from the 3rd element to the 6th element".

The 3rd element in the series is 14, and the 6th element is 5; we have to add these and all the elements between them together.

∴    \sum\limits_{n=3}^6 a_n    =  14 + 11 + 8 + 5

                   = 38

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Find the difference 7 7/8 - 3 1/4
nignag [31]
7 7/8 - 3 1/4
Change to improper fraction
63/8 - 13/4
You need to find a common denominator
63/8 - 26/8=
37/8 or 4 5/8
4 0
4 years ago
At a concession stand, five hot dog(s) and two hamburger(s) cost $11.75; two hot dog(s) and five hamburger(s) cost $11.00. Find
serg [7]

Answer:

x:hot dogs

y: hamburger

5x + 2y = 11.75

2x + 5y = 11.00

10x + 4y = 23.50

-10x - 25y = -55.00

-21y = -31.50

y = $1.50 each hamburger

2x + 5(1.50)= 11.00

2x + 7.50 = 11.00

2x = $3.50

x = $1.75 each hot dog

8 0
4 years ago
8 is 4% of the number
Murljashka [212]

Answer:

(8/4)100 = 200

Step-by-step explanation:

Simplify the following:

8/4×100

Hint: | Express 8/4×100 as a single fraction.

8/4×100 = (8×100)/4:

(8×100)/4

Hint: | In (8×100)/4, divide 100 in the numerator by 4 in the denominator.

4 | | 2 | 5

| 1 | 0 | 0

- | | 8 |  

| | 2 | 0

| - | 2 | 0

| | | 0:

8×25

Hint: | Multiply 8 and 25 together.

8×25 = 200:

Answer: 200

5 0
3 years ago
Read 2 more answers
What is 3+6/2?<br><br> Whoever answers correct will get brainliest.
irinina [24]

Step-by-step explanation:

3 + 6 / 2 = 8

hope this helps you

if this helps you then please make me brainlist

4 0
2 years ago
Need help?????????!!!!!!!
julsineya [31]

Answer:

73 and -23 hope this helped hon :)

Step-by-step explanation:

y=-8x+9

plug in -8

y=-8(-8)+9

y=64+9

y=73

y=-8x+9

plug in 4

y=-8(4)+9

y=-32+9

y=-23

3 0
3 years ago
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