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Pani-rosa [81]
3 years ago
14

Solve (x-3)^2 =5 completing the square

Mathematics
2 answers:
Gre4nikov [31]3 years ago
7 0

Step-by-step explanation:

There are two ways to solve this equation for x

Either you develop (x-3)^2 and then solve the quadratic equation

Or you can solve it this way :

(X-3)^2= 5

x-3 = + or - root square 5

So x = 3+ or - root square 5

otez555 [7]3 years ago
3 0

Answer:

x = 3 ± √5

Step-by-step explanation:

The expression (x - 3)² = 5 doesn't need completing the square to solve (this is the step after you finish completing the square):

Step 1: Square root both sides

x - 3 = ±√5

Step 2: Add 3 to both sides

x = 3 ± √5 = 0.76392, 5.23607

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aleksley [76]

Answer:

The circumference is 18.84 inches.

Step-by-step explanation:

To find the circumference of the circle we can use the formula:

C=2\pi r

Where C is circumference and r is radius.

Now that we have the formula, we can substitute the numbers:

C=2(3.14*3)\\C=2(9.42)\\C=18.84

8 0
2 years ago
Read 2 more answers
In a certain​ chemical, the ratio of zinc to copper is 3 to 16. A jar of the chemical contains 736 grams of copper. How many gra
evablogger [386]

The jar has 138 grams of zinc.

<u>Solution:</u>

Given that , In a certain chemical reaction, the ratio of zinc to copper is 3 to 16.  

A jar of the chemical contains 736 grams of copper.  

We have to find how many grams of zinc does it contain

Let "n" be the grams of zinc needed for 736 grams of copper  

Now, we know that,  

16 grams of copper ⇒ 3 grams of zinc

Then, 736 grams of copper ⇒ n grams of zinc

So, by criss cross multiplication,

n \times 16 = 3 \times 736

16n = 3 x 736

16n = 2208

n = 138

Hence, the jar has 138 grams of zinc.

5 0
3 years ago
-2(x + 5) = -16 <br><br> = ???
34kurt

Answer:

if you're looking for x its -13

8 0
3 years ago
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Simplify the expression
Reil [10]

Answer:453rft

Step-by-step explanation:

5 0
3 years ago
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The ratio of two numbers is 8:7. The product of these numbers is 896. What is the smaller of these two
Darina [25.2K]

Answer:

  28

Step-by-step explanation:

You want the smaller of the two factors of 896 that have the ratio 8:7.

<h3>Setup</h3>

Let x represent the smaller of the two factors (the one we want to find). Then the larger factor is (8/7)x, and their product is ...

  x(8/7)x = 896

  (8/7)x² = 896

<h3>Solution</h3>

Multiplying by the inverse of the coefficient of x², we have ...

  x² = (7/8)(896) = 784

  x = √784 = 28 . . . . . . . . take square root

The smaller of the two numbers is 28.

__

<em>Additional comment</em>

The larger is (8/7)(28) = 32.

5 0
2 years ago
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