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4 years ago

Give a recursive formula for this sequence: 1,4,7,10,13,16.... PLEASE HELP ME! Tysm! (:

Mathematics

1 answer:

Valentin [98]4 years ago

7 0

Answer:

$a_{n+1}$ = $a_{n}$ + 3 ; a₁ = 1

Step-by-step explanation:

Given

1, 4, 7, 10, 13, 16, ......

Note the difference in consecutive terms is constant, that is

4 - 1 = 7 - 4 = 10 - 7 = 13 - 10 = 16 - 13 = 3

Thus to obtain the next term in the sequence ( recursive formula )

Add 3 to the previous term

$a_{n+1}$ = $a_{n}$ + 3 ( with a₁ = 1 )

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Tell the numbers that are odd and composite 2,14,23,24,25,31,45

fredd [130]

The odd numbers r 2,23,31 and the composite numbers r 14,24,25,45

4 0

3 years ago

Need desperate help thanks

guapka [62]

Answer:

x = 158

y = 22

Step-by-step explanation:

A triangle's inside sides sum up to 180 degrees. So to find the angle y, just take 180 - the sum of the other two sides.

70 + 88 = 158

180 - 158 = 22

y = 22 degrees

Now, to find angle x, since x and y are next to each other on a straight line, it means they are supplementary angles. Supplementary angles add together to equal 180, so just substract y from 180 to get x.

180 - 22 = 158

x = 158 degrees

6 0

2 years ago

Use the inverse of the function y = x2 − 18x to find the unknown values.

Lerok [7]

ANSWER

b=1, c=81, and d=9.

EXPLANATION

The given function is:

$y={x}^{2}-18x$

This function is the same as:

$y={(x - 9)}^{2}-81$

To find the inverse of this function, we interchange x and y.

$x={(y-9)}^{2}-81$

Solve for y:

$x+81={(y- 9)}^{2}$

Take square root of both sides:

$\pm \sqrt{x + 81}=y-9$

$y=\pm \sqrt{x + 81}+9$

Hence,

b=1, c=81, and d=9.

7 0

3 years ago

Read 2 more answers

A 9m long ladder rests at 9m below a vertical wall. If the angle of elevation of the top of the wall from the foot of the ladder

Arte-miy333 [17]

Height of the wall is 27 m.

<u>Explanation:</u>

Let the height of the wall = h

Length of the ladder = 9 m

Angle of elevation = 60°

Ladder rests at 9 m below a vertical wall.

So, length of the wall upto which the ladder rests = h - 9

We know,

Cos Ф = base/ hypotenuse

cos 60° = length of the ladder / height of wall upto which the ladder rests

$\frac{1}{2} = \frac{9}{h - 9}$

So,

h - 9 = 18

h = 27

Therefore, height of the wall is 27 m

3 0

4 years ago

The pumpkin festival is finally here! Ms Hooven bought two orange brownies and four pumpkin pies for a total of $25. Mr.Ziss bou

Degger [83]

Answer:

2b+4p=25.00 4b+5p=30.00

Step-by-step explanation:

7 0

3 years ago