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Mathematics

2 answers:

lawyer [7]2 years ago

6 0

Answer:6 to 10

Step-by-step explanation:

Lera25 [3.4K]2 years ago

3 0

The equivalent ratios are 3 to 5, 24 to 40, and 6 to 10.

Ratios are equivalent when they can be simplified down to the same ratio, for example 2 to 4 simplifies to 1 to 2 (by dividing by 2), and so does 3 to 6 (by dividing by 3), so these are equivalent. We can find answers by first simplifying the original ratio 12 to 20, which we can do by finding common factors and dividing by them:

12 to 20

÷ 2

6 to 10 (here we have found one answer)

÷ 2

3 to 5 (and here is another answer)

We then get 24 to 40 by multiplying the original ratio by 2, so:

12 to 20

× 2

24 to 40

I hope this helps! Let me know if you have any questions :)

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garri49 [273]

Answer:

Quadratic function, None of the above, and ?

Step-by-step explanation:

So remember what I told you about earlier, lets look at that first one.

So we can see that x is increasing by 1 and y is decreasing by 3...And then it increases by 3! And after that another 9! Well, that seems like it is reversing, as it changes from decreasing to increasing in y coordinates. So knowing that is reverses from decreasing to increasing in y, <u>it must be a quadratic function</u>!

Next we have a increase in 1 and a decrease by 17...then 12...then 7 in y. This isnt decreasing by a constant amount like a linear function. It doesnt seem like a obvious exponential decrease either, and it isnt reversing like a quadratic function does. I am going to use something called logarthms, which you don't even need to think about yet, just to make sure that it is not an exponent. Althouhg the difference in the exponent was only 0.0018, it is a differnece.<u> So this must be a none of the above</u>, sicne none of the functions apply. (If this is incorrect, and it is exponential, then the test is wrong. While the method I used is something found in mid algebra 2, it is still a method of finding a exponent of a number.)

Now we finish up with a change in x of 1, and a change of y by...-11, -11, -11!

Well, what do you think this is, thinking back on what I have said so far.

It is a constant change of -11y and 1x. Remember, a CONSTANT CHANGE.

What do you think it is :)

If you cannot figure it out, let me know in comments.

<u>Hope this is helps you!</u>

5 0

3 years ago

There are 25 questions on your math test. You have completed 5 questions so far. What fraction of the total questions do you sti

maksim [4K]

Answer:

$\frac{4}{5}$

Step-by-step explanation:

If you have completed $5$ questions, you still have $25-5=20$ more questions to answer. We need to find what fraction $20$ is of $25$ , if that makes sense. A fraction is simply a part over a whole. In this case, the part is $20$ and the whole is $25$ . Therefore, the fraction we are looking for is $\frac{20}{25}$ , which simplifies to $\frac{4}{5}$ . Hope this helps!