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3 years ago

Write an equation in simplest form that can be used to find the value of x. (Don’t find the value of x)

Mathematics

1 answer:

Mashcka [7]3 years ago

6 0

Answer:

3x=20

Step-by-step explanation:

Perimeter is just all the sides of a shape added. So, x+x+x=20 or, more simply put, 3x=20.

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In the equation left parenthesis x squared plus 14 x right parenthesis plus left parenthesis y squared minus 18 y right parenthe

Phoenix [80]

Answer:

Complete the square on x by adding 49 to both sides.

Complete the square on y by adding 81 to both sides.

Step-by-step explanation:

We have been given an equation $(x^2+14x)+(y^2+18y)=5$ . We are asked to complete the squares for both x and y.

We know to complete a square, we add the half the square of coefficient of x or y term.

Upon looking at our given equation, we can see that coefficient of x is 14 and coefficient of y is 18.

$(\frac{14}{2})^2=7^2=49$

$(\frac{18}{2})^2=9^2=81$

Now, we will add 49 to complete the x term square and 81 to complete y term square on both sides of our given equation as:

$(x^2+14x+49)+(y^2+18y+81)=5+49+81$

Applying the perfect square formula $a^2+2ab+b^2=(a+b)^2$ , we will get:

$(x+7)^2+(y+9)^2=135$

Therefore, We can complete the square on x by adding 49 to both sides and the square on y by adding 81 to both sides.

7 0

3 years ago

Please help i’ll give brainliest

Furkat [3]

Answer:

The answer is A, a total of 12 students spend 31 or more hours online per month.

Step-by-step explanation:

From the hours of 31 to 65 there are twelve students.

7 0

3 years ago

Another one lol(picture)

Andreyy89

Look up the law of sines, I suggest Khan Academy. It is better if you know how to do it, it is very useful.

7 0

3 years ago

Someone help pls pls

OLEGan [10]

Answer:

3.636 hour. dividing 200miles /55m/h =3.636h

3 0

2 years ago

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WARRIOR [948]

10 is the correct answer

4 0

3 years ago

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