3 years ago

HELP ME PLS WILL MARK BRAINLISTT!!!!

Mathematics

2 answers:

Nady [450]3 years ago

8 0

Answer:

(5,3)

Step-by-step explanation:

visualize it on a graph

yaroslaw [1]3 years ago

4 0

Answer:

4,4

Step-by-step explanation:

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Which expression is equivalent to the expression below

pochemuha

Answer:

2/ 10^12

Step-by-step explanation:

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3 years ago

If x2+1/x2=18, find the value of x3−1/x3

Elden [556K]

Answer:

There are 2 answers : 76 or -76

Step-by-step explanation:

$x^2+\dfrac{1}{x^2} =18\\\\(x-\dfrac{1}{x} )^2=x^2+\dfrac{1}{x^2} -2=18-2=16\\\\x-\dfrac{1}{x}=4\ or\ x-\dfrac{1}{x}-4\\\\(x-\dfrac{1}{x} )^3=x^3-\dfrac{1}{x^3} -3x^2*\dfrac{1}{x}+3x*\dfrac{1}{x^2}\\\\=x^3-\dfrac{1}{x^3}-3(x-\dfrac{1}{x})\\\\x^3-\dfrac{1}{x^3}=(x-\dfrac{1}{x} )^3+3(x-\dfrac{1}{x})\\\\if\ x-\dfrac{1}{x}=4\ then \ x^3-\dfrac{1}{x^3}=4^3+3*4=64-12=76\\\\if\ x-\dfrac{1}{x}=-4\ then \ x^3-\dfrac{1}{x^3}=(-4)^3+3*(-4)=-64-12=-76\\\\$

7 0

3 years ago

Read 2 more answers

What’s is the answer to these two problems?

Len [333]

Answer:

Step-by-step explanation:

8 0

3 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

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3 years ago

Andy was scuba diving while his friend Ramon was climbing a mountain. If Andy was at an elevation of -100 feet, and Ramon was at

Dafna1 [17]

Answer:

1075 feet

Step-by-step explanation:

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3 years ago