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umka2103 [35]
3 years ago
13

What is the special rule with multiplying or dividing an equality by a negative number?

Mathematics
1 answer:
Hunter-Best [27]3 years ago
6 0
Multiplying or dividing both sides by a negative number reverses the inequality.
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The expression 3P2 represents the number of ways of:?
Vsevolod [243]
The expression 3P2 can also be read as "permutation of 3 taken 2". This represents the number of ways in which the 3 items are arranged with the emphasis on the arrangement of the first two other items. 
5 0
3 years ago
Read 2 more answers
I never learned this. I tried I just don’t understand. Can anyone help
Scorpion4ik [409]

Answer:

Step-by-step explanation:

n = 25

33+n = 33+25 = 58

n/5 = 25/5 = 5

\sqrt{n+144}=\sqrt{25+144}=\sqrt{169}=13

4 0
3 years ago
Nik needs to estimate how many books will fit in a bin. Each book is 0.75 feet tall, 0.75 feet wide, and 0.25 feet thick. The bi
cricket20 [7]

Step-by-step explanation:

first you find the volume of a bin.

that is multiplication of 3 dimensions given.

4*4*4=64 cubic feet...

now volume of books..

0.75*0.75.0.25=0.14 cubic feet

now the number of books that will fit the bin=volume of bin/volume of books

64/0.14=455

455 books

7 0
2 years ago
1.Find the zeros of f(x) = x2 - 9
Marat540 [252]
So for the first one it is (x-3)(x+3) this is because it is a difference of squares so you square root the 9 and the minus you do both +and - in order to keep up the -9
The zeros are:x=3 and x=-3 ( this is because you change the sign in the bracket


the others should be pretty simple to do for number 2 its a complex
the third is a simple trinomial
and fourth is simple trinomial as well
6 0
2 years ago
Can anybody show me the steps to answering this question? 7x - 2z = 4 - xy<br> (solve for x)
Fed [463]

Answer: 2z+4/y+7

Step-by-step explanation:

We are trying to solve for x

7x-2z=4-xy

Add xy to both sides:

7x-2z+xy=-xy+4+xy= xy+7x-2z=4

Then you add 2z to both sides:

xy+7x-2z+2z=4+2z

xy+7x=2z+4

Then you factor out variable x

x(y+7)=2z+4

You divide both sides by y+7

x(y+7)/y+7= 2z+4/y+7

Which we would get x=2z+4/y+7

8 0
3 years ago
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