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Novay_Z [31]
3 years ago
13

How do I solve ratio and rate problems using equivalent ratios or cross products?

Mathematics
1 answer:
sdas [7]3 years ago
7 0
You have to simplify diagonally them multiply Example:

3
5. 18. 15
__. / ___ =. ___ =
6. 2. 12
1

3/4

Cross simplify
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If K(5,-2) is rotated 90°, what will be the coordinates of its image?
stiks02 [169]

Answer:

I think it is k(2,5) or k'(-2, -5

Step-by-step explanation:

Hope This Helps Have A Good Day

70% sure that it is K(2,5)

4 0
3 years ago
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A gardener would like to keep animals out of his rectangular garden by putting up a fence. Find how much fencing is needed to en
Daniel [21]
To figure out the answer, you need to find the perimeter. To do this you know (93*2)+(63*2). Your answer is 312 ft.
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3 years ago
Solve:<br> -9(-5-3x)=21<br> A) 8/9<br> B) -8/9<br> C) 22/9<br> D) -22/9
marin [14]

Answer: B) -8/9

Step-by-step explanation:

I would start by looking inside the parenthesis to see if anything could be simplified. We see the terms -5 and -3x, and upon realizing that there is no way to simplify, we can go ahead and just simplify the left side of the equation as much as we can before worrying about breaking the equation down. Distribute the -9 to the -5 and the -3x (multiply -9 by -5 and -9 by -3x). Multiplying two negative numbers will result in a positive value, so the left side of your equation should end up looking like this: 45+27x=21. Now, we can start working to get the variable on its own. Subtract 45 from both sides of the equation. On the left side this cancels out and leaves you with 27x. On the right side you have more of the negative value than positive value, so you end up with -24. The equation now looks like this: 27x=24. The only thing left to do is divide the equation by 27. On the left side of the equation, this leaves you with just x. On the right side, you get -24/27. Normally at this point I would divide out to get the decimal form (I prefer working with decimals) but bc the answer choices are all fractions there's not really a good use to, so instead let's just find the greatest common denominator (GCD) which would be 8. (Just as a clarification the GCD is the largest number you can divide both numbers by evenly.) Divide both the numerator and denominator by eight leaves you with -8/9. Therefore, x= -8/9.

8 0
3 years ago
Why is 4.125... rational
ipn [44]

Answer:

A rational number is any integer, fraction, terminating decimal, or repeating decimal.

Step-by-step explanation:

Terminating decimal is a fraction whose decimal representation contains a finite number of digits.

5 0
3 years ago
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A store sells small notebooks for ​$7 and large notebooks for ​$10. If a student buys 6 notebooks and spends ​$54​, how many of
puteri [66]

4 large notebooks and 2 small notebooks

6 0
3 years ago
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