3 years ago

Need help on 14 and 16 please I really need help

Mathematics

1 answer:

lisov135 [29]3 years ago

4 0

16. the answer for the scale by dividing two number's

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X^{3}-2 is the correct answer

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Between 2000 and 2015 the number of twin births in a certain country increased by 12% to approximately 133,840. About how many t

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3 years ago

Find the value of a and b if root3-1/root3+1+ root3+1/root3-1=a+root3 b

Digiron [165]

Answer:

a=4 and b = 0

Step-by-step explanation:

Given : $\dfrac{\sqrt 3 -1}{\sqrt 3+1}+\dfrac{\sqrt 3+1}{\sqrt 3-1}=a+\sqrt 3 b$

To find, The value of a and b

Solution,

Solving LHS of the given equation,

$\dfrac{(\sqrt 3-1)^2+(\sqrt3+1)^2}{(\sqrt 3+1)(\sqrt 3-1)}=a+\sqrt 3 b$

Since,

$(a-b)^2=a^2+b^2-2ab\\\\(a+b)^2=a^2+b^2+2ab\\\\(a-b)(a+b)=a^2+b^2$

So,

$\dfrac{3+1-2\sqrt 3+3+1+2\sqrt 3}{3-1}=a+\sqrt 3 b\\\\4=a+\sqrt 3 b$

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On comparing we get :

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3 years ago

Evan saves 7 dollars each week. let d represents the total amount of money in dollars Evan saves after w weeks.

DerKrebs [107]

D=7
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2 years ago

Choose the function table that matches the given rule<br> Rule:output=input -2

kirill [66]

Answer:

option B

Step-by-step explanation:

Rule:output=input -2

LEts analyze the table

we use the input and apply the rule to get the output

LEts subtract 2 from input to get the output

Input Rule (input -2 ) Output

-3 -3-2 -5

-7 -7-2 -9

6 6-2 4

Option B matches with our table

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3 years ago