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scZoUnD [109]
3 years ago
6

Help me with number pattern, questions (b) to (c). Thank you!

Mathematics
1 answer:
ASHA 777 [7]3 years ago
3 0
9b) Numerator = 1,2,4,8,16 = 2^0, 2^1, 2^2, 2^3, 2^4 Multiples of 2. If a numerator = x, the next numerator = 2x 1/1,2/(1+2),4/(3+4) If a denominator = y, the next denominator = y+2x 2x/(2x+y) 9c) 1, 2, 4, 8, 16 = 2^(n-1) 2, 4, 8, 16, 32 = 2^n 1, 3, 7, 15, 31 = 2-1, 4-1, 8-1, 16-1, 32-1 = 2^n - 1 2^(n-1) / ( 2^n - 1 )
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3x+y=4 <br> x+2y=-2<br> what is the answer
Taya2010 [7]

Answer:

2(3x+y=4)

1(x+2y=-2)

6x+2y=8

<u>(-) x+2y=-2</u>

<u>5x=10</u>

5

x=2

x+2y=-1

2+2y=-1

<u>-</u><u>2</u><u> -</u><u>2</u>

<u>2y=-</u><u>3</u>

2

y=-3/2

Step-by-step explanation:

  1. multiply the first equation by 2 to make y equal to each other.
  2. subtract to eliminate y
  3. divide by 5 to get x
  4. take one of the equations
  5. replace x by 2 to solve for y
3 0
3 years ago
How do i round 74,600 to the nearest thousand​
Nataly [62]

Answer:

75000

hope this helps u

brainliest pls

Step-by-step explanation:

Let 7.1239 is a decimal number. Now, we have to round the given decimal number to its nearest thousandth.

Step 1: Identity the thousandth digit. (Here, 3 is the digit which is in thousandth place)

Step 2: Now, look at the digit, which is next to the thousandth place. If that digit is less than 5, round down the thousandth digit. If that digit is greater than or equal to 5, round up the thousandth digit. From the example given above, the digit next to the thousandth digit (i.e., 9) is greater than 5, so we have to round up the thousandth digit.

Step 3: Thus, the number 7.1239 rounded to the nearest thousandth is 7.124.

7 0
2 years ago
The difference of a number and four is no more than 8
mixas84 [53]
I am not so sure but I think the answer is 12
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2 years ago
Is the following relation a function?<br><br> x y<br> 1 −2<br> 1 −3<br> 2 1<br> 3 −2
vagabundo [1.1K]

Answer:

It is not a function!

Step-by-step explanation:

It is not a function!

A function can't have two y-values assigned to the same x-value. In this case, you can se that for x=1 we have two y-values, which are y= -2 and y= -3.

We can have have two x-values assigned to the same y-value, that's why it's okay that for x=1 and x=3 we have the same y-value y=-2

7 0
3 years ago
A road 4 inches long on a map is 80 miles long in real life. A river is 2 ½ inches long on the map and is 50 miles long in real
jonny [76]
Not Proportional. Sorry if it’s wrong
7 0
2 years ago
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