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ch4aika [34]
1 year ago
7

-9(4p-6q)+8q-7(3q-3p) how would I rewrite in simplest terms

Mathematics
2 answers:
koban [17]1 year ago
8 0

Answer:

The answer is - 15p + 41q

Step-by-step explanation:

The explanation is on the picture attached

nadya68 [22]1 year ago
4 0

Answer: -15p + 41q

Step-by-step explanation:

Problem: -9(4p-6q) + 8q- 7(3q - 3p)

1. Expand by distributing terms

−(36p−54q) + 8q − 7(3q − 3p)

2. Expand by distributing terms

−(36p−54q) + 8q − (21q − 21p)

3. Remove parenthesis

−36p + 54q + 8q − 21q + 21p

4. Collect like terms

(−36p + 21p) + (54q + 8q − 21q)

5. Simplify

-15p + 41q

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Daniel says that when the irrational number 7√3 is multiplied by any rational number, the product is always an irrational number
jeka94

Answer: 0

============================================

Explanation:

When we multiply 0 by any number, we get 0 as a result

x*0 = 0

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The number 0 is rational since we can write it as a fraction of two integers

0 = 0/1

If Daniel were to correct his statement to say "multiply by any <u>nonzero</u> rational number", then his statement would be correct that the result is irrational.

----------------------------------------------

Extra info:

Here's a proof showing why Daniel's claim is correct if we consider nonzero rational numbers

Let p be a nonzero rational number, so p = a/b for integers a,b where neither a or b are zero

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The claim is that p*q is irrational. For now let's assume the opposite. So assume p*q is rational. This means p*q = r/s for integers r,s

This would be the same as (a/b)*q = r/s which solves to q = (r/s)*(b/a) = (rb)/(sa) making q rational, but that contradicts the fact we made q irrational earlier.

Therefore, the assumption p*q is rational cannot be the case, and p*q must be irrational.

7 0
2 years ago
Hallway measuring 90ft by 7ft requires half a fluid oz of cleaning solution per square foot. How much cleaning solution is requi
aliya0001 [1]

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Answer:

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Hope this helps!

Step-by-step explanation:

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Step-by-step explanation:

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