3 years ago

I am having trouble with a problem that asks what the mistake a student made and to write down the correct equation.

Mathematics

1 answer:

ad-work [718]3 years ago

4 0

Well where is the question lol

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I need to know how to simplify using conjugate

liubo4ka [24]

$\frac{4}{2 \sqrt{7}+ \sqrt{6} }$
Multiply denominator and numerator of fraction by conjugate (2√7 -6)
= $\frac{4(2 \sqrt{7})(- \sqrt{6}) }{(2 \sqrt{7} + \sqrt{6})(2 \sqrt{7} - \sqrt{6} ) }$
Expand using distributive property
= $\frac{8 \sqrt{7}- 4 \sqrt{6} }{28-2 \sqrt{42}+2 \sqrt{42} -6 }$
Collect like terms to simplify
= $\frac{8 \sqrt{7}-4 \sqrt{6} }{22}$

6 0

4 years ago

F(n)=3n-15/10 what's the inverse

slavikrds [6]

To find the inverse function, interchange the variables and solve for y.
f^-1(n) = 1/2 + n/3

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3 years ago

Read 2 more answers

PLEASE HELP ME!!!

zmey [24]

Answer:

Sorry

Step-by-step explanation:

8 0

3 years ago

At a store 30 pieces of candy cost a total of $2.40 each piece of candy cost the same amount what is the total cost of 4 pieces

uysha [10]

Answer:

0.32

Step-by-step explanation:

First you divide 2.40 by 30 and then it gives you the cost of each individual piece of candy.then you multiply 4 by that amount.

6 0

3 years ago

Sharon has a new beaded necklace. The necklace has 6 blue beads and 14 white beads. What percentage of the beads on Sharon's nec

Klio2033 [76]

It would be 30% because if you divide 20 by 14 you would get a decimal and the decimal you convert into a percentage after that’s done you get the remaining value Wich it is 30%

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3 years ago

I am having trouble with a problem that asks what the mistake a student made and to write down the correct equation.​

I am having trouble with a problem that asks what the mistake a student made and to write down the correct equation.