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Usimov [2.4K]
3 years ago
5

the first three terms of the sequence are -9 -7 -5 select the expression giving the nth term of the sequence n+2,n-2, 2n-9, 2n -

11
Mathematics
1 answer:
tamaranim1 [39]3 years ago
7 0

Answer:

2n-11

Step-by-step explanation:

-9, -7, -5

a+(n-1)d

-9+(n-1)2

-9+2n-2

2n-11

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Please help me !!!!!!!!!
lidiya [134]

Answer:

f(-2) = 0

f(1) = 12

f(2) = 5

Step-by-step explanation:

f(-2) will lie in the function f(x) =x^2 - 4

\therefore f( - 2) =  {( - 2)}^{2}  - 4 = 4 - 4 = 0

f(1) will lie in the function f(x) =2x^2 +10

\therefore f(1) = 2 {(1)}^{2}  + 10 = 2 + 10 = 12

f(2) will lie in the function f(x) =5

\therefore f(2) = 5

5 0
3 years ago
One hose can fill a goldfish pond in 3030 ​minutes, and two hoses can fill the same pond in 2121 minutes. find how long it takes
Sholpan [36]
One hose can fill the pond in 30 minutes, which means every minute it fills 1/30 of the pond.
the second hose can fill the pond in x minutes, which means every minute it fills 1/x portion of the pond.
together it fills the WHOLE pond in 21 minutes: 21/30 +21/x=1
21/x=1- 21/30=9/30=3/10
x=70

7 0
3 years ago
What are the solutions of x squared + 6 x minus 6 = 10?
steposvetlana [31]

Answer:

x=-8 or x=2

Step-by-step explanation:

x² + 6x - 6 = 10

x² + 6x - 6 - 10 = 0

x² + 6x - 16 = 0

= (x + 8)(x - 2)

x + 8 = 0

x = -8

x - 2 = 0

x = 2

4 0
3 years ago
Read 2 more answers
Find the slope and the -intercept of the line.<br> y=-3/4x+8
Alona [7]

Answer:

slope =  -  \frac{3}{4}  \\ y - intercept = 8

5 0
3 years ago
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On a 4 1 2 hour trip, Leslie drove 2 3 of the time. For how many hours did Leslie drive?
valentina_108 [34]

Answer:

She drove 3 hours

Step-by-step explanation:

Leslie drove 2/3 of the 4 1/2 hours trip.  To determine how long she drove, multiply these numbers together.

2/3 * 4 1/2

We need to change the second number to an improper fraction

4 1/2 = (2*4 +1)/2 = 9/2


2/3 * 9/2 = 9/3 = 3


She drove 3 hours

5 0
3 years ago
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