All categories

2 years ago

Anyone knows the number sequence of 7,8,15,23,38?

1 answer:

5 0

Sequence
8 - 7 = 1
15 - 8 = 7
23 - 15 = 8
38 - 23 = 15
For more sequences
38 + 23 = 61
Then
61 + 38 = 99
And so on the sequence continue

You might be interested in

Solve the equation -3 2/3+b = 8 1/5 B= 5 3/5 B= 4 4/5 B= 11 3/5 B= 11 1/5

Readme [11.4K]

Answer:

11 13/15

Step-by-step explanation:

-3 2/3+b = 8 1/5

Add 3 2/3 to each side

-3 2/3 + 3 2/3+b = 8 1/5+ 3 2/3

b = 8 1/5 + 3 2/3

We need to get a common denominator of 15

8 1/5 = 8 3/15

3 2/3 = 3 10/15

----------------

11 13/15

4 0

3 years ago

What should be added to twice a rational Number -7/3to get 3/7

saul85 [17]

Answer:

107/21

Step-by-step explanation:

re - phrase the question algebraically:

-14/3 + y = 3/7

LCM of 3 and 7 = 21

-98/21 + y = 9/21

what should be added to -98 to make 9?

answer: 107

therefore answer: 107/21

Hope this helps.

Good Luck

3 0

3 years ago

Identify the percent of change as increase or decrease of 138 to 75

RUDIKE [14]

138 x ? = 75
? = 75/138 = 0.544(3sf)
so about 54.35% (2dp) decrease

8 0

2 years ago

A population of mice is increasing exponentially. On Monday there were 120 most. One month later there were 132 most. Ready func

djyliett [7]

Answer:

$y=120 * 1.1^x$ --- function

The monthly rate is 10%

Step-by-step explanation:

Given

Let

$x \to months$

$y \to mice$

So, we have:

$(x_1,y_1) = (0,120)$ --- Monday

$(x_2,y_2) = (1,132)$ --- One month later

Required

The function

The function is represented as:

$y=ab^x$

In $(x_1,y_1) = (0,120)$ , we have:

$120 = a * b^0$

$120 = a * 1$

$120 = a$

$a=120$

In $(x_2,y_2) = (1,132)$ , we have:

$132 = a * b^1$

$132 = a * b$

Substitute: $a=120$

$132 = 120 * b$

Solve for b

$b = \frac{132}{120}$

$b = 1.1$

So, the function is:

$y=ab^x$

$y=120 * 1.1^x$

To calculate the monthly rate (r), we have:

$y =a(1 + r)^x$

Compare to: $y =ab^x$

$1 + r = b$

Make r the subject

$r = b-1$

Substitute $b = 1.1$

$r = 1.1-1$

$r = 0.1$

Express as percentage

$r = 0.1*100\%$

$r = 10\%$

5 0

2 years ago

- Which fraction has a value that's equal to 3/4? A. 4/3 ) B. 12/12 c. ²6 D. 12/16

yaroslaw [1]

12/16
If you divide 12 by 4 you get 3 and if you divide 16 by 4 you get 4 so that would be 3/4

7 0

2 years ago

Read 2 more answers

Anyone knows the number sequence of 7,8,15,23,38? ​

Anyone knows the number sequence of 7,8,15,23,38?