what is x? x^2+(x+1)^2=145

Answers

Answer 1
We want to determine x from the equation
x² + (x+1)² = 145

Expand.
x² + x² + 2x + 1 = 145
2x² + 2x + 1 - 145 = 0
2x² + 2x - 144 = 0
x² + x - 72 = 0

Factorize.
(x - 8)(x + 9) = 0

Therefore
x = 8, or x = -9

Answer:  x = 8 or x = -9
Answer 2
Answer:  x = 8, -9 " .
___________________________________________
Explanation:

___________________________________________
Given:
___________________________________________
x² + (x + 1)² = 145 ;  Solve for "x" :
___________________________________________
Note:  (x+1)² = (x+1) (x+1) = x² + 1x + 1x + 1 = x² + 2x + 1 ;
___________________________________________
 → x² + (x + 1)²   = x² + x² + 2x + 1 ;

                          = 2x² + 2x + 1 ; 
__________________________________
             2x² + 2x + 1 = 145 ;

Subtract "1" from each side:
__________________________________
  ↔  2x² + 2x + 1 - 1  = 145 - 1 ; 

to get: 
__________________________________________
  →  2x² + 2x = 144 ; 
__________________________________________
Now, subtract "144" from EACH SIDE of the equation:
__________________________________________
  → 2x² + 2x - 144 = 144 - 144 ;
__________________________________________
to get:

  → 2x² + 2x - 144 = 0 ;

which is an equation written in "quadratic format" that is:

" ax² + bx + c = 0 ;  (a≠ 0) " ; 
____________________________________
We have:
____________________________________
  → 2x² + 2x - 144 = 0 ; 
____________________________________
Divide each side of the equation by "2" ; to simplify:

  {2x² + 2x - 144} / 2 = 0 / 2 ;
____________________________________
to get:
____________________________________
   →   x² +  x - 72 = 0 ; 
____________________________________
The "left-hand side" of the equation can be factored:
____________________________________
    (x - 8) (x + 9) = 0 ; 
______________________________________
 →  x = 8, -9 .
______________________________________

Related Questions

140% or 0.14 which is greater?

Answers

140% is the greater of these two.
140% is great because 0.14 as a decimal is 14%

11x-9=108 What is the answer to this equation?

Answers

11x-9 = 108

add 9 to both sides:

11x = 117

divide both sides by 11

x = 117 / 11 = 10.63636364

Find a report in a newspaper magazine or on the Internet that uses results from a servery. Evaluate how the survey uses ratios to reach
conclusion

Answers

To do this,find anything like you mentioned that has a survey. Now a survey must use ratios to get conclusion because you must first figure out how many people out of the entire group are divided to get an answer. Lets say you take a survey over ice cream. You survevy 40 people. 25 people vote vanilla,10 vote chocolate,and 5 vote strawberry. You would use these ideas to conclude that most people like vanilla and not very many people like strawberry. Hope this makes sense :)


Marjorie consumed 1.5 gallons of water in one day. How many milliliters are equal to 1.5 gallons, if 1 liter = 1,000 milliliters and 1 gallon = 3.785 liters? (3 points)

5.6775 milliliters

567.75 milliliters

5,677.5 milliliters

56,775 milliliters

Answers

First step is to convert gallons to liters. The equation would be 1.5(3.785) = x.
Solve for x, so that you convert 1.5 gallons to liters, equaling 5.6775 liters. Then, you convert liters to milliliters. 5.6775 liters = 5677.5 milliliters. 
The answer is the third answer, 5677.5 ml.

The amount of water consumed each day is 1.5 gallons = 5667.5 millilitres. The correct option is C.

What is unit conversion?

Multiplication or division by a numerical factor, selection of the correct number of significant figures, and unit conversion are all steps in a multi-step procedure.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

The amount of water in millilitres will be calculated as,

1 Gallons = 3.785 litres

1.5 Gallons = 3.785 x 1.5 litres

1.5 Gallons = 5.6775 litres

1.5 gallons = 5.6775 x 1000 mililitres

1.5 Gallons = 5677.5 mililitres

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What is the product in simplest form? −8/9⋅5/6
A.−1
B.−13/15
C.−20/27
D.−15

Answers

The answer is C.
hope this helps!
Hello,

-8/9 X 5/6 = -40 / 54. The greatest common factor they both go into is 20

Divide -40 and 54 by 20, and the answer simplified is -20/27, letter C.

Hope this helps!

May

)Maya is showing her work in simplifying (5.2 − 4.5) − 5.5 + 4.8. Identify any error in her work or reasoning.
Step 1: (5.2 − 4.5) − 5.5 + 4.8
Step 2: 5.2 + (− 4.5 − 5.5) + 4.8 (identity property)
Step 3: 5.2 − 10 + 4.8
Step 4: 5.2 + 4.8 − 10 (commutative property)
Step 5: 10 − 10 = 0

Answers:
A. She wrote identity instead of commutative in Step 2.
B. She wrote commutative instead of distributive in Step 4.
C. She wrote identity instead of associative in Step 2.
D. She wrote commutative instead of associative in Step 4.

Answers

The answer is B or D but I’m not sure because step 2 is wrong

Hello,

The correct answer is C) She wrote identity instead of associative in Step 2.

Hope this helps!!!! :)

**(Vanessa)**

The selling price of an item is ​$650 It is marked down by
10%, but this sale price is still marked up from the cost of ​$450
Find the markup from cost to sale price.

Answers

Answer:

10%×$650=$585

$585-$450=$135 Mark up.

Step-by-step explanation:

The markup from cost to sale price is $135.

What is the cost price?

Cost price, for instance, equals selling price plus profit ( when selling price and profit is given ) Cost is equal to Selling price plus Loss ( when selling price and loss is given )

Cost price = 100 Selling Price + 100 + Profit (where the Selling Price and Profit Percentage are supplied)

Given the selling price of item = $650

The cost = $450

Therefore,

10% × $650 = $585

$585-$450=$135

Hence,  the markup from cost to sale price is $135.

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The rabbit population in a certain area is 500% of last years population. There are 900 rabbits this year. How many were there this year?

Answers

Answer:

180 rabbits

Step-by-step explanation:

The correct question is

The rabbit population in a certain area is 500% of last years population. There are 900 rabbits this year. How many were there last year?

we know that

900 rabbits represent 500% of last year population

Last year population represent 100%

so

using proportion

Find out how many rabbits represent a percentage of 100%

[tex]\frac{900}{500\%}=\frac{x}{100\%}\\\\x=900(100)/500\\\\x=180\ rabbits[/tex]

Answer:180

Step-by-step explanation:

Anna is making soft toys she can sell at the fair. She can make 3 soft toys in 5 hours. How many soft toys can she make in 20 hours?
A. 10

B. 12

C. 16

D. 20

Answers

The answer is B.12 because if she make 3 in 5 hours that means that in twenty hours should make 12 because it's like this 3 x 4 = 12 and 5 x 4 = 20 so when you add the hours up you'll get the answer

Answer:

B.12

Step-by-step explanation:

We can calculate it with a direct rule of 3. If in 5 hours she can make 3 soft toys, how many soft toys will she make in 20 hours?

[tex]\text{5 hours} -\!\!\!-\!\!\!- \text{3 soft toys}\\ \text{20 hours} -\!\!\!-\!\!\!- \text{x soft toys}[/tex]

We use the formula of the direct rule of 3:

[tex]x = \frac {20*3}{5} \\ \\ x = \frac {60}{5}\\[/tex]

x = 12

She can make 12 soft toys in 20 hours.

A snail is at the bottom of a well. In the first 10 minutes, the snail climbs 23 7/12 inches. In the next 10 minutes, it clims 19 5/6 inches. How far is the snail from the bottom of the well after 20 minutes?

Answers

I believe that the snail would be 43 5/12 inches away from the bottom after 20 minutes.
43.41 in is how far up

It was estimated that a giraffe would be 15.5 feet tall when fully grown. its actual height was 16.25 feet. what was the percent error between the actual and estimated values of height

Answers

What you do is subtract 16.25 by 15.5
- you get 0.75

Then do 0.75/16.25
It is 0.04615384615
When you convert that into percentages it would be a 4.6153% rounded up to 4.62 percent error

What is the equation of this line? y=12x−2 y=−2 x−2 y=2 x−2 y=−12x−2

Answers

the correct answer is y=1

Shawn read 3/4 of a chapter of his history book in 1/6 of an hour at this rate how many chapters of his history book can he read in 1 hour explain

Answers

one-sixth of an hour is 10 minute
10 minutes 3/4 chapter
 Therefore, 10 minutes x 6= 3/4x6
Shawn can read 4.5 chapters in one hour

Solve for x, assuming a, b, and c are negative constants.

(ax + b)/c ≤ b

Answers

Solving for some variable means finding its value for which the given statement is true. Thus, the solution to given inequality is [tex]x \leq \dfrac{b(c-1)}{a}[/tex] (if a/c is non-negative)or [tex]x \geq \dfrac{b(c-1)}{a}[/tex] (if a/c is negative)

What type of operations are allowed in inequality?

All such operations such that inequality doesn't gets modified( for example, if left expression is bigger than right one, then that expression cannot go bigger than the later expression).

For the given case, the inequality given is:

[tex](ax+b)/c \leq b[/tex]

Its solution can be found by doing operations which doesn't modify the inequality and takes all the terms such that one side is 'x' and other side are constants.
[tex](ax+b)/c \leq b\\\\\dfrac{a}{c}x + \dfrac{b}{c} \leq b\\\\\text{Subtracting b/c from both the sides}\\\\\dfrac{a}{c}x \leq b - \dfrac{b}{c}\\\\\text{Supposing that a/c is non-negative, multiplying both sides by c/a}\\\\x \leq \dfrac{c}{a} \times \dfrac{bc - b}{c} = \dfrac{b(c-1)}{a}\\\\x \leq \dfrac{b(c-1)}{a}[/tex]

(i assumed a/c non-negative, since multiplying with negative quantity can modify the sign of inequality, so ≤ would have become ≥ )

If a/c is negative, then:

[tex]x \geq \dfrac{c}{a} \times \dfrac{bc - b}{c} = \dfrac{b(c-1)}{a}\\\\x \geq \dfrac{b(c-1)}{a}[/tex]

Thus, the solution to given inequality is [tex]x \leq \dfrac{b(c-1)}{a}[/tex] (if a/c is non-negative)

or [tex]x \geq \dfrac{b(c-1)}{a}[/tex] (if a/c is negative)

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Final answer:

To solve for x, we can multiply both sides of the equation by c, subtract b from both sides, and then divide both sides by a to isolate x. The solution is x ≤ (bc - b)/a.

Explanation:

To solve for x in the equation (ax + b)/c ≤ b, we can first multiply both sides of the equation by c to eliminate the denominator:

ax + b ≤ bc

Next, we can subtract b from both sides:

ax ≤ bc - b

Finally, we divide both sides by a to isolate x:

x ≤ (bc - b)/a

Since a, b, and c are negative constants, the values of b and c are negative. Therefore, the numerator of the inequality will always be negative, resulting in a positive value for x. So the solution is:

x ≤ (bc - b)/a

yasmine bought 6 gallons of apple juice. after filing up 4 bottles of the same juice, she had 0.3 gallons of apple juice left. What's the amount of apple juice in each bottle?

Answers

1.425 gallons/bottle

Further explanation

Given:

Yasmine bought 6 gallons of apple juice. After filling up 4 bottles of the same juice, she had 0.3 gallons of apple juice left.

Question:

What is the amount of apple juice in each bottle?

The Process:

Let the amount of apple juice in each bottle as X.

The two steps for obtaining X are as follows:

Step-1: the total amount of apple juice is the initial gallon amount subtracted by the remaining gallon amount.

[tex]\boxed{ \ 6 \ gallons - 0.3 \ gallons = 5.7 \ gallons \ }[/tex]

Step-2: the total amount of apple juice divided by the number of bottles is the amount of apple juice in each bottle.

[tex]\boxed{ \ X = 5.7 \ gallons \div 4 \ bottles = \boxed{ \ 1.425 \ gallons/bottle \ } \ }[/tex]

Quick steps:

[tex]\boxed{ \ X = \frac{(6 - 0.3) \ gallons}{4 \ bottles} = \boxed{ \ 1.425 \ gallons/bottle \ } \ }[/tex]

Thus, the amount of apple juice in each bottle is 1.425 gallons.

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Keyword: Yasmine bought 6 gallons of apple juice, after filling up 4 bottles, she had 0.3 gallons, what's the amount, in each bottle?

The size of each bottle that is filled by apple juice is [tex]\boxed{\bf 1.425}[/tex].

Further explanation:

Given:

Yasmine bought [tex]6[/tex] gallons of apple juice.

She filled up [tex]4[/tex] bottles of same size.

She had [tex]0.3[/tex] gallon of apple juice left.

Calculation:

Consider the size of each bottle is [tex]x[/tex] gallons.

Total size of each bottle is [tex]4x[/tex] gallons.

Total amount of apple juice used in these [tex]4[/tex] gallons can be obtained by subtracting total amount of apple juice to remaining apple juice.

[tex]\boxed{6-0.3=5.7}[/tex]

Therefore, total size of the [tex]4[/tex] bottles is [tex]5.7\text{ gallon}[/tex].

Write the equation for the total size of the bottles.

[tex]\boxed{4x=5.7}[/tex]  

Now find the value of [tex]x[/tex] which gives the size of the bottles.

[tex]\begin{aligned}4x&=5.7\\x&=\dfrac{5.7}{4}\\x&=1.425\end{aligned}[/tex]  

Therefore, the size of each bottle that is filled by apple juice is [tex]\boxed{\bf 1.425}[/tex].

Simple method:

First find the total size of bottle and then divide by [tex]4[/tex].

The total size of each bottle can be obtained as follows:

[tex]6-0.3=5.7[/tex]  

The size of each bottle can be obtained as follows:

[tex]\dfrac{5.7}{4}=1.425[/tex]  

The size of each bottle that is filled by apple juice is [tex]\boxed{\bf 1.425}[/tex].

Learn more:

1. Learn more about algebraic expression https://brainly.com/question/1600376

2. Learn more about average https://brainly.com/question/3959122

Answer details:

Grade: Middle school

Subject: Mathematics

Chapter: Algebraic expression

Keywords: Yasmine, apple juice, juice, 6 gallons, 0.3 gallons, filled, equally, bottles, juice, poured,1.425, liters, size, amount, equation, total size.

What is the simplified value of the expression below? 8.5+(12+4)x2-7
A. 10.5
B. 33.5
C. 88.5
D. 97.5

Answers

B. 33.5 is your answer
First you want to add 12+4 because it is in parentheses
8.5+16x2-7
Then you multiply 16 by 2
8.5+32-7
Then you add 8.5 to 32
40.5-7
Then you subtract 7 from 40.5 giving you your answer
33.5

Answer:33.5

Step-by-step explanation:

last year there were 20 girls on the volleyball team this year the number of girls decreased by 10% how many girls are on the volleyball team this year

Answers

We need to subtract 10% of 20 by 20.

To get 10% of 20, do 20 x .1 = 2

20 - 2 = 18

18 girls are on the volleyball team this year.

Carla and Brandon are members of two different magazine programs where any magazine ordered is the same price, regardless of the magazine ordered.

Carla pays $9.44 for 4 magazines, and she pays $21.24 for 9 magazines.

The equation below represents the amount of money Brandon pays for x magazines.

y = $2.87x

Who pays more per magazine?
A.
Brandon and Carla pay the same price per magazine.

B.
Carla pays more per magazine.

C.
Brandon pays more per magazine.

D.
There is not enough information to determine the price per magazine.

Answers

C because 9.44 divided by 4 is 2.46

Brandon pays more per magazine

What is Linear equations ?

Linear Equation is an equation in which the highest power of the variable is always 1 .

From question it is given ,

Carla pays $9.44 for 4 magazines

Let cost of one magazine is '$m'

4 * m = $9.44

m = 9.44 /4 = 2.36

hence , Carla paid $ 2.36 for one magazine

In case of Brandon ,

from equation y = $ 2.87 x

it can be seen that he paid $ 2.87 per magazine

Hence , answer is c) Brandon pays more per magazine

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Naomi drank 3/4 of a 20.8 ounce container of apple juice. How much ounces of apple juice did Naomi drink????

Answers

The answer to your question is 15.6 ounces.
15.6 ounces is what Naomi drank.
hope this helps you!
(please mark brainliest i really need it, Thanks!)

What is 76912 divided by 92

Answers

836 is the answer to this question.

76912 divided by 92 is 836

a cricket chirps 40 times a minute when the temperature is 50 degrees. write an equation representing the temperature in terms of number of chirps per minute

Answers

Final answer:

The relationship between temperature and the number of chirps per minute can be represented by the equation C = 0.8T, where C is the number of chirps per minute and T is the temperature.

Explanation:

The relationship between the temperature and the number of chirps per minute can be represented by an equation.

Let's assume that the temperature is denoted by T and the number of chirps per minute is denoted by C. According to the given data, when the temperature is 50 degrees, the cricket chirps 40 times per minute. We can use this information to write the equation as:

C = kT

where k is a constant.

To solve for the value of k, we can substitute the temperature and the number of chirps per minute into the equation:

40 = k * 50

Dividing both sides by 50 gives us:

k = 40/50 = 0.8

Therefore, the equation representing the temperature in terms of the number of chirps per minute is:

C = 0.8T

8.50 as a rational number?

Answers

8.50 is already a rational number last time I checked since a rational number is any whole number, fraction, mixed number or decimal.  

simplify rational expression

Answers

take - common from either numerator or denominator then both are same 
therefore cut it 

In order to simplify, we want to change the 10 - x to an x - 10.

To do that, we can factor out a -1.

So we have -1(x - 10)/(x - 10).

Now our x - 10's cancel leaving us with -1.

The state of Colorado has roughly the shape of a rectangle that is 3.8 x 102 miles long and 2.8 x 102 miles high. What is the approximate area of Colorado? Hint: The area of a rectangle is the product of its length and width.

Answers

104,185 miles is the area of Colorado



Drag and drop a phrase to make the statement true.
Triangles ABC and DEF are .
similar triangles or not similar triangles


Answers

Since m<B is equal to m<E, hence the angles are similar triangles

To determine if both triangles are similar, all the interior angles of the triangles must be equal to each other that is;

m<B = m<Em<C = m<F

Get the measure of angle B

The measure of the interior angle of the triangle is 180 degrees

m<D + m<E + m<F = 90

90 + m<E + 55 = 180

m<E = 180 - 145

m<E = 35 degrees

Since m<B is equal to m<E, hence the angles are similar triangles

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What is true about the product, a fraction less than 1 is multiplied by 9/10

Answers

then it would be 9/10 don't you know anything times 1 is its self even fractions 
suppose a/b<1
then a/b*9/10=9a/10b<1
since, a<b and 9<10

Saeed's house is 6,000 meters away from Anna's house. How many kilometers apart are their houses?

Answers

6KM 6000 divided by 6

1 kilometer = 1000 meters

 6000 meters  / 1000 = 6 kilometers

Pilar used five reusable shopping bags recent purchase she made at a grocery store. Each bag decreased the amount she spent by 10 cents. What was the change to the amount Pilar spent at the grocery state by using the reusable bags?

Answers

Her total was deducted by 50 cents because 5x10 equals 50

Pilar saved a total of $0.50 by using five reusable shopping bags, with each bag providing a $0.10 discount on her purchase.

Pilar used five reusable shopping bags for a recent purchase she made at a grocery store, where each bag decreased the amount she spent by $0.10. To calculate the total amount saved by Pilar, we must multiply the number of bags by the savings per bag. So the calculation is as follows:

Number of reusable bags = 5

Savings per bag = $0.10

Total savings = Number of reusable bags imes Savings per bag = 5 imes $0.10 = $0.50

Therefore, by using the reusable bags, Pilar saved a total of $0.50 on her grocery purchase.

WHAT IS THE RELATIONSHIP BETWEEN A DOMAIN, RELATION, AND RANGE??????

Answers

Relations are subsets of products A×BA×B where AA is the domain and BB the codomain of the relation.
A function ff is a relation with a special property: for each a∈Aa∈A there is a unique b∈Bb∈B s.t. ⟨a,b⟩∈f⟨a,b⟩∈f.This unique bb is denoted as f(a)f(a) and the 'range' of function ff is the set {f(a)∣a∈A}⊆B{f(a)∣a∈A}⊆B.You could also use the notation {b∈B∣∃a∈A[⟨a,b⟩∈f]}{b∈B∣∃a∈A[⟨a,b⟩∈f]}Applying that on a relation RR it becomes {b∈B∣∃a∈A[⟨a,b⟩∈R]}{b∈B∣∃a∈A[⟨a,b⟩∈R]}That set can be labeled as the range of relation RR.
Final answer:

The relationship between a domain, relation, and range in mathematics is that the domain represents the set of input values, the relation shows the relationship between input and output values, and the range represents the set of output values.

Explanation:

In mathematics, "a domain is the set of input values or independent variable in a relation or function". It represents the possible values for the input variable. A relation is a set of ordered pairs that shows the relationship between the input and output values. The range of a relation is the set of output values or dependent variable.

For example, let's consider a relation that relates the ages of students to their heights. The ages of the students would be the domain, the heights would be the range, and the ordered pairs would represent the relationship between age and height.

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How is a relationship determined when looking at a scatterplot

Answers

Answer:

Scatter plots show how much one variable is affected by another. The relationship between two variables is called their correlation . ... If the line goes from a high-value on the y-axis down to a high-value on the x-axis, the variables have a negative correlation . A perfect positive correlation is given the value of 1.

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