Help please it is due today

Mathematics

1 answer:

Svet_ta [14]3 years ago

8 0

Answer:

Jane's situation is the one which represents a porportional relationship.

Step-by-step explanation:

To verify the proportionality betwen a ratio you have to divide all the ratios and all them have to get the same constant factor.

So, if you divide the matt's ratios you aren't gonna find the same constant factor

12/1=12

20/2=10

31/2=15,5

But if you try with Jane's ones:

12/1=12

24/2=12

36/3=12

This 12 is the known constant factor, which show us that these ratios are proportional.

You might be interested in

Please include step by step instruction, so I can learn how to solve the problem. Thank you

Yuki888 [10]

9514 1404 393

Answer:

A, C

Step-by-step explanation:

First of all, recognize that any basic arithmetic operation between a rational number and an irrational number will have an irrational result. That means, you can eliminate any answer choices that involve an irrational number.

Fractions and mixed numbers involving integers are always rational, so you only need to look at the radicals. You know 9 is 3×3, so is a perfect square, and √9 = 3 is rational. You know 5 is not a perfect square, so √5 is irrational.

Considering the above, any expression involving √5 will have an irrational result. That means you can eliminate choices B and D.

choices A and C will result in a rational number

_____

Additional comment

A = 6.8 +0.75 = 7.55 (rational)

C = 6.8 × 0.75 = 5.100 (rational)

7 0

2 years ago

What is 7082732*8072-121+818=?

amm1812

Answer:

57171813401