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hichkok12 [17]
2 years ago
15

What is the 20th term of the linear sequence?1,7,13,19,25

Mathematics
1 answer:
Nimfa-mama [501]2 years ago
4 0

Answer:

115

Step-by-step explanation:

There is a common difference d between consecutive terms, that is

d = 7 - 1 = 13 - 7 = 19 - 13 = 25 - 19 = 6

This indicates the sequence is arithmetic with n th term

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 1 and d = 6 , thus

a₂₀ = 1 + (19 × 6) = 1 + 114 = 115

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PLEASE HELP!!!!!!!!
Wewaii [24]

Answer:

#1 is -9

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Step-by-step explanation:

-9x3 is -27 then add 10 to that you get -17

5x3 is 15 then subtract 1 and you get 14

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3 years ago
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1. D

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Answer:

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Step-by-step explanation:

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3 years ago
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Please help with algebra problem
kumpel [21]
Number of weekend minutes used: x
Number of weekday minutes used: y

This month Nick was billed for 643 minutes:
(1) x+y=643

The charge for these minutes was $35.44
Telephone company charges $0.04 per minute for weekend calls (x)
and $0.08 per minute for calls made on weekdays (y)
(2) 0.04x+0.08y=35.44

We have a system of 2 equations and 2 unkowns:
(1) x+y=643
(2) 0.04x+0.08y=35.44

Using the method of substitution
Isolating x from the first equation:
(1) x+y-y=643-y
(3) x=643-y

Replacing x by 643-y in the second equation
(2) 0.04x+0.08y=35.44
0.04(643-y)+0.08y=35.44
25.72-0.04y+0.08y=35.44
0.04y+25.72=35.44

Solving for y:
0.04y+25.72-25.72=35.44-25.72
0.04y=9.72

Dividing both sides of the equation by 0.04:
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Replacing y by 243 in the equation (3)
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x=643-243
x=400

Answers:
The number of weekends minutes used was 400
The number of weekdays minutes used was 243
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3 years ago
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Answer:

yes

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4 0
2 years ago
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