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3 years ago

If

ign="absmiddle" class="latex-formula">=36 and xy= -7, findthe value of $x^{2}+y^{2}$

Mathematics

1 answer:

olga_2 [115]3 years ago

4 0

$(x + y)^2 = 36$

$x^2 + 2xy + y^2 = 36$

$x^2+ y^2 = 36 - 2xy = 36- 2(-7)= 36+14=50$

Answer: 50

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Step-by-step explanation: edge

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3 years ago

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mote1985 [20]

Step-by-step explanation:

1. Right

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2 years ago

Value of x is 3.2x-9.6=38.4?

Svetradugi [14.3K]

Answer:

The steps that can be done to both sides of the equation is: Add 9.6, then divide by 3.2

Step-by-step explanation:

Solve the equation:

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-Then, you divide both sides by 3.2:

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3 years ago

How many sixteenths are there in 5/8

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3 years ago

Brandon has 32 stamps. he wants to display the stamps in rows,with the same n

AleksandrR [38]

Okay, let's work this out...
What we know:
-32 stamps in all
- rows (horizontal)
- same # in each
What we "want to know" :
- # of combinations (different)
Problem Solving :
This is actually very easy its just the words than get ya!
1st : we need to figure out the factors of 32...
In other words, we need to figure out _x_=32 and how many different combinations and ways there are!
Note:(* means multiplication)
#1: What are the factors of 32?
32: 1*32 , 2*16 , 4*8
32: 32*1 , 16*2 , 8*4
The factors (not including 1 are 2,4,8,16)
Now, as you can see, there are 4 ways to get 32 as shown first.
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^
That ¦ is 1 way with 16 in 2 rows. Basic multiplication, 16*2=32 or 16+16=32.
But, this is also a way,
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Now there should be 2 in each row and 16 rows. Again 2*16=32 or 2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2=32
That's two ways so far.
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Another way which is 4 rows with 8 in each.
4*8=32 or 8+8+8+8=32
But, this is also a way,
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Now that is 8 rows with 4 in each. 8*4=32 or 4+4+4+4+4+4+4+4=32
That was our fourth way.
Again NOT including 1. If you include 1 then there will be 6 ways but aside from that there are 4 ways.
I hope that helped I worked hard typing this all for you. Any questions just ask!

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3 years ago