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Harrizon [31]
3 years ago
14

How many different ways can you add two odd numbers to get a sum of 20 and add examples

Mathematics
1 answer:
Gre4nikov [31]3 years ago
7 0
We can add only odd numbers.  Let's assume that we're dealing ONLY with positive numbers.  Which two odd numbers add to 20?  1+19 qualifies.
So do 3+17, 5+15, 7+13, 9+11.
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Which table shows y as DIRECTLY PROPORTIONAL to x
Furkat [3]

Answer:

Table B

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

<em>Verify table B</em>

For x=1, y=1/2 -----> k=y/x=(1/2)/1=1/2

For x=2, y=1 -----> k=y/x=1/2

For x=3, y=3/2 -----> k=y/x=(3/2)/3=1/2

For x=4, y=2 -----> k=y/x=2/4=1/2

The values of k are the same

therefore

The table B shows y as DIRECTLY PROPORTIONAL to x

<em>Verify table D</em>

For x=1, y=3 -----> k=y/x=3/1=3

For x=2, y=5 -----> k=y/x=5/2=2.5

For x=3, y=7 -----> k=y/x=7/3

For x=4, y=9 -----> k=y/x=9/4

the values of k are different

therefore

The table D not shows y as DIRECTLY PROPORTIONAL to x

5 0
3 years ago
there are 600 pupils in a school. the ratio of boys to girls in this school is 3:5.How many girls and how many boys are in the s
a_sh-v [17]
In order to obtain a ratio of boys to girls equal to 3:5, the number of boys has to be written as 3 x and the number of girls as 5 x where x is a common factor to the number of girls and the number of boys. The total number of boys and girls is 600. Hence 

<span>3x + 5x = 600 </span>

Solve for x 

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<span>x = 75 </span>

Number of boys 

<span>3x = 3 × 75 = 225 </span>

Number of girls 

<span>5x = 5 × 75 = 375</span>
7 0
3 years ago
Read 2 more answers
This problem is difficult please help
vredina [299]
If you can describe a mathematical way to create the pattern, then the next number is mathematically predictable. Options B, C, D are like that.

The best choices are
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  E. Use winning lottery numbers
6 0
2 years ago
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