Z/9+= 2 Z= solve what is z

1 answer:

6 0

So because we are working backwards then we want to isolate the variable so we multiply 9 to each side and the /9 x9 crosses out and 2 x9 = 18 so x= 18 I hope that helps

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X^2-8x+16=5 what are the solutions?

svp [43]

Hey!

The first step to solving this equation would be to subtract 5 from both sides of the equation.

Original Equation :
$x^{2}$ - 8x + 16 = 5

New Equation {Added Subtract 5 to Both Sides} :
$x^{2}$ - 8x + 16 - 5 = 5 - 5

Now we solve our new equation.

Old Equation :
$x^{2}$ - 8x + 16 - 5 = 5 - 5

Solution {Old Equation Solved} :
$x^{2}$ - 8x + 11 = 0

The next step would be to solve with the quadratic formula.

Quadratic Equation ( 1 ) :
$x = \frac{-(-8) + \sqrt{(-8)^{2} -4 * 1 * 11 } }{2*1}$

Quadratic Equation ( 1 ) {Solved} :
4 + $\sqrt{5}$

Quadratic Equation ( 2 ) :
$x = \frac{-(-8) - \sqrt{(-8)^{2}-4 *1*11 } }{2*1}$

Quadratic Equation ( 2 ) {Solved} :
4 - $\sqrt{5}$

So, our final solutions for the equation $x^{2}$ - 8x + 16 = 5 are...

x = 4 + $\sqrt{5}$

and 

x = 4 - $\sqrt{5}$

Hope this helps!

- Lindsey Frazier ♥

5 0

4 years ago

Which expression is equivalent to 3z + 7z by the distributive property

Genrish500 [490]

It would be A. 3z+7z.....

8 0

4 years ago

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Alexus [3.1K]

The Answer to the question : is B

6 0

4 years ago

A cylinder has a base diameter of 16in and a height of 5in. What is its volume in cubic

Scrat [10]

Answer:

1004.8 in³

Step-by-step explanation:

d = 2r => r = d/2 = 16in/2 = 8 inches

V = Ab×h

= π·r²×h

= 3.14·(8in)²×5in

= 1004.8 in³

6 0

3 years ago

Read 2 more answers

Melanie is making lemonade and finds a recipe that calls for 1 part lemon juice,2 parts sugar, and 8 parts water . she juice's 2

NikAS [45]

0.375 cups lemon juice, 0.75 cups sugar, 3 cups water. Instructions Malanie makes lemonade using 1:2:8 lemon juice, sugar, and water.

This is further explained below.

<h3>How much sugar and water will she need to make lemonade with the same ratio of ingredients as the recipe.?</h3>

Generally, The act of quantifying the characteristics of an item or event so that they may be compared to those of other things or occurrences is what we mean when we talk about measurement.

To put it another way, measuring is the act of estimating the size of a physical amount in relation to a fundamental reference quantity of the same sort in order to get an accurate reading.

In conclusion, The needed quantities of lemon juice, sugar, and water are equal to 0.375 cups, 0.75 cups, and 3 cups, respectively. Explanation in detail step by step: Malanie is preparing lemonade, and she discovers a recipe that calls for the juice of one lemon, two tablespoons of sugar, and eight ounces of water.