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3 years ago

If using the method of completing the square to solve the quadratic equation

Mathematics

1 answer:

jenyasd209 [6]3 years ago

4 0

You add half of the coefficient of x and square it.

What you do on one side,you must do it on the other.

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Help please???????????????

irinina [24]

Answer: 3/4 as a decimal is 0.75

Step-by-step explanation: 0.75 is the percent. so it is 75%

Hope this helps :)

4 0

3 years ago

Read 2 more answers

Which of the following pairs of numbers contains like fractions? A. 5⁄6 and 10⁄12 B. 3⁄2 and 2⁄3 C. 3 1⁄2 and 4 4⁄4 D. 6⁄7 and 1

ElenaW [278]

<h2>Hello!</h2>

The answers are:

$\frac{5}{6}$ and $\frac{10}{12}$

$\frac{6}{7}$ and $1\frac{5}{7}$

To find which of the following pairs of numbers contains like fractions, we must remember that like fractions are the fractions that share the same denominator.

We are given two fractions that are like fractions. Those fractions are:

Option A.

$\frac{5}{6}$ and $\frac{10}{12}$

We have that:

$\frac{10}{12}=\frac{5}{6}$

So, we have that the pairs of numbers

$\frac{5}{6}$

and

$\frac{5}{6}$

Share the same denominator, which is equal to 6, so, the pairs of numbers contains like fractions.

Option D.

$\frac{6}{7}$ and $1\frac{5}{7}$

We have that:

$1\frac{5}{7}=1+\frac{5}{7}=\frac{7+5}{7}=\frac{12}{7}$

So, we have that the pair of numbers

$\frac{6}{7}$

and

$\frac{12}{7}$

Share the same denominator, which is equal to 7, so, the pairs of numbers constains like fractions.

Also, we have that the other given options are not like fractions since both pairs of numbers do not share the same denominator.

The other options are:

$\frac{3}{2},\frac{2}{3}$

and

$3\frac{1}{2},4\frac{4}{4}$

We can see that both pairs of numbers do not share the same denominator so, they do not contain like fractions.

Hence, the answers are:

$\frac{5}{6}$ and $\frac{10}{12}$

$\frac{6}{7}$ and $1\frac{5}{7}$

Have a nice day!

3 0

3 years ago

PLS PLS PLS HELP ME is there any high schooler or middle schooler taking algebra and understands it really well because I stoppe

o-na [289]

I may help you, do you have discord? it would be better if we move it there, my user is ri#0511

5 0

2 years ago

Sovle each system of equations by graphing

Artist 52 [7]

Answer:

this is for the first one

6 0

2 years ago

If f(x)=1/9x-2, what is f-1(x)

aleksandr82 [10.1K]

To find the inverse of f(x), you solve for the independent variable, x, and then swap the variable labels. The reason for doing so is easily seen if one remembers what an inverse function really is. The inverse function will produce the opposite coordinate as the parent function. If f(x)=(x,y), f^-1(x)=(y,x), so the inverse function simply creates the inverse of all of the points that exist for f(x)...with that out of the way, let y=f(x), then:

y=1/(9x-2) (I am trying to decipher what you actually meant to type)

Multiply both sides by (9x-2)

y(9x-2)=1 divide both sides by y

9x-2=1/y add 2 to both sides

9x=1/y+2 which is equal to

9x=(1+2y)/y divide both sides by 9

x=(1+2y)/(9y) now switch labels...

y=(1+2x)/(9x)

f^-1(x)=(1+2x)/(9x)

Again, I am not sure that I understood what you meant to type for the equation... strictly as typed you actually have:

y=x/9-2 which can be written as:

y=(x-18)/9 multiply both sides by 9

9y=x-18 add 18 to both sides

9y+18=x then switch labels

y=9x+18

f^-1(x)=9x+18

The denominator must be made clear in this format by using () brackets, otherwise it is anyone's guess...

3 0

3 years ago