Solve the equation without using a calculator

\((x^2-9x-1)^{10}+99x^{10}=10x^9(x^2-1)\)

The values under and inside the radical is 4 and 129 respectively

A quadratic equation is any equation that can be rearranged in standard form as where x represents an unknown value, and a, b, and c represent known numbers. One supposes generally that a ≠ 0; those equations with a = 0 are considered degenerate because the equation then becomes linear or even simpler.

A quadratic equation is given as ax²+ bx+ c=0

this can be solved using formula x=( -b±√b²-4ac)/2a.

in the equation 2x²-10=7x, it can be Rearranged As 2x²-7x-10= 0

a= 2, b= -7 and c= -10

x= -(-7)±√(-7)²-4×2×-10)/2×2

x= 7±√49+80)/4

x= 7/4 ± √129/4

therefore the values inside and under the radical is 129 and 4

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The loss percentage is 91%.Given that Venessa bought 80 apples for 4$, out of these apples, 25% were rotten and had to be thrown away. Venessa sold the remaining apples at 6 cents per apple.To calculate the profit or loss percentage, we need to determine the cost price, selling price, and the number of apples sold.

Cost price (CP) = 4 $.Selling price (SP) = 80 × 0.75 × 6 cents= 36 cents = 0.36 $.Now, let's calculate the profit.Profit = SP – CP= 0.36 $ – 4 $= – 3.64 $Loss = CP – SP= 4 $ – 0.36 $= 3.64 $.

Therefore, Venessa incurred a loss of $3.64 when she sold 80 apples at 6 cents per apple.Now let's calculate the loss percentage Loss Percentage = (Loss / CP) × 100= (3.64 / 4) × 100= 91%.

Therefore, the loss percentage is 91%.Note: If the result obtained after the subtraction of SP from CP is negative, it means there is a loss, and the percentage of loss can be calculated by (loss/CP) × 100.

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Answer:

c

Step-by-step explanation:

Answer:

A. Yes, the points have no pattern.

Step-by-step explanation:

just did it on edge and got 100%

Answer:

Jodi will have to pay $38,000 in principal plus $27,550 in interest for a total of $65,550.00.

Step-by-step explanation:

Solution:

P = $38,000, R = 7.25% and T = 10

I = P*R*T

I = (38000)*(.0725)*(10) = $27,550.00

Answer: Jodi will have to pay $38,000 in principal plus $27,550 in interest for a total of $65,550.00.

Answer:   Jodi will pay $65,550.00 in total.

Steps:   7.25% of $38,000 is $2,755.00

Multiply 2,755.00 times 10:      2,755 × 10 =  27,550

$38,000.00 + $27,550.00 = $65,550.00

Plz mark brainliest:)

Answer:

just remember that each baby elephant weight 3/8 of a ton

and all together weight 3/4 of a ton

so how many baby elephants will be ,let be x a unknown number of them

so

x*(3/8) =3/4

because multiplying the number of baby elephants with their body weight gives the total weight of all baby elephants.

so

x=(3/4)*(8/4)=2

the number of baby elephants is 2

Answer:

0

Step-by-step explanation:

Pick 2 points and use the slope formula

(–1, 0), (2, 3)

Slope =(y2−y1)/(x2−x1)

              (3−0)(2−−1)

                   3/3

                     1

y=1x

Hope this helps! Plz award Brainliest : )

Answer:

Step-by-step explanation:

its JK Kl and KL JK

The side x of the similar triangle is 12.7 units.

The triangles are similar triangle.

Two triangles are said to be similar when they have two corresponding angles congruent and the sides proportional.

Therefore, using the proportion

37- 5 / x = x / 5

Evaluate the difference of 37 and 5

32 / x = x / 5

Cross multiply the equation

x × x = 32 × 5

So, we have

x² = 160

Take the square root of both sides

x = √160

Evaluate the square roots

x = 12.6491106407

Hence, the value of x is x = 12.7 units (when approximated)

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The equation could Nicholas use to find tea the amount the amount of time in minutes he will spend typing his report has W words is w = 30t .

In contrast to velocity, which describes the speed and direction of an object's movement, speed is the rate of movement along a path. Alternatively, velocity is a vector while speed is a scalar quantity. Velocity and speed are denoted by the letters v and v, respectively (boldface). The symbol has a bar over it for average values. How swiftly something is going, being done, or something that is moving quickly is measured in terms of speed. Driving an automobile 45 miles per hour is an illustration of speed. Someone cleaning a room in 10 minutes would be an example of quickness. the definition of speed. a direction or speed at which an object's location changes.

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1. The percentage of maize flour is given as 16.7 %

2. The common ratio of the GP is r = 1.5.

1. We have to set up equation

60x + 90(1 - x) = 85

60x + 90 - 90x = 85

now we have to solve for the value of x

-30x = -5

x = 5 / 30

x = 0.167

Hence percentage of maize flour is given as 16.7 %

2. a + ar = 20 (1)

ar + ar^2 = 30 (2)

We can rearrange equation (1) to get an expression for a:

a = 20 / (1 + r)

Now, we can substitute a into equation (2) to get an equation only in terms of r:

\(20r / (1 + r) + 20r^2 / (1 + r) = 30\\20r + 20r^2 = 30(1 + r)\\20r + 20r^2 = 30 + 30r\\20r^2 - 10r - 30 = 0\\2r^2 - r - 3 = 0\)

Solving this quadratic equation, we get:

We have two solutions, r = 1.5 and r = -1. But since the GP is increasing, we discard the negative solution. Therefore, the common ratio of the GP is r = 1.5.

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Answer:

I can not solve it in the system of the image, but i will give you the graph so you can copy it, or at least see how it is done.

First, we have the lines:

y = (1/3)*x + 6

y = (-5/3)*x - 6

To graph these lines, you must find two points for the lines and then draw a line that connects the points.

To do it, you can evaluate each line in two different values of x, for example for the first line we can have:

y(0) = (1/3)*0 + 6 = 6   (then we have the point (0, 6))

y(3) = (1/3)*3 + 6 = 7    (then we have the point (3, 7))

And for the second line, we will have:

y(0) = (-5/3)*0 - 6 = -6 (then we have the point (0, -6))

y(3) = -(5/3)*3 - 6 = -11 (then we have the point (-3, -11))

Now with those points we can graph the lines, and the solution of the system of equation will be the point where the two lines intersect.

The graphs of the lines are shown below:

Where the grey line is the first one, and the green is the second.

In the graph, you can see that the lines intersect in the point (-6, 4)

Then the solution for the system is x = -6, and y = 4.

Answer:

46

Step-by-step explanation:

your add odd number 1,3,5,7,9,11,13...

Answer:

what's the question

Step-by-step explanation:

lol but u could mark me brainlyist

Answer:

.....................................

Step-by-step explanation:

Answer:

6^2= 36

Step-by-step explanation:

Answer:

because that is what sqrt are

Step-by-step explanation:

A square root of a number is a value that, when multiplied by itself, gives the number. Example: 6 × 6 = 36, so a square root of 36 is 6 ... The symbol is √ which always means the positive square root.

Answer:

\(34\frac{1}{5}\)

Step-by-step explanation:

\(\frac{45}{100}*76\)

\(\frac{171}{5} = 34\frac{1}{5}\)

Answer:

Step-by-step explanation:

babababa

Answer:-5

Step-by-step explanation:

you just minus it bruh

John now has X - 3

and splits the remainder equally between himself and his brothers

Each of the brothers now has (X-3)/3 apples (we have to assume here that Jack and Jim didn't have any apples to begin with).

Jack and John both eat half of the apples they have been given

They now have (X-3)/3/2, or just (X-3)/6

Together the three brothers have 4 apples left

Now we say 4 = (X-3)/3 (Jim) + (X-3)/6 (Jack) + (X-3)/6 (John)

From here it's algebra. A nice trick we can do here is to add (X-3)/6 + (X-3)/6 together first, since they have the same denominator:

4 = (X-3)/3 + (X-3)/3

From there we can do the same trick, since now we have two terms that are both something/3:

4 = 2(X-3)/3

Multiply both sides by 3, divide both sides by 2:

6 = X - 3

Add 3 to both sides

9 = X

Answer:

8 or 9

Step-by-step explanation:

John eats 3 gives brothers and himself the remainder they both eat half and both halves are left making it 1 so add up to how much was eaten 3+1=4 and they have 4 left making it 8.  Or just say x-3-1=4 and x=8. It can also be 9 so hopefully, someone else answers because if we add the halves remaining to the altogether it becomes 9 instead. Hope it's right and makes sense.

The vertex of the graph is a maximum at (-2, 4)

From the question, we have the following parameters that can be used in our computation:

The graph

The graph is a quadratic function

From the graph, we can see that the graph has a maximum value

This maximum value represents the vertex of the graph

And it is located at (-2, 4)

So, we have

Maximum = (-2, 4)

Hence, the maximum value of the function is (-2, 4)

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Answer:

answer is c

Step-by-step explanation:

you have to find x first and try any of the equation if you get y and it is the same of the graph and thats the answer

Answer:

(7, 9)

Step-by-step explanation:

The (x-7) indicates that the graph will be shifted to the RIGHT 7 units. The +9 at the end of the equation means the graph will be shifted UP 9 units.

So the point (0,0) will land at (7,9)

Answer:

The answer is most likely A.

The reason why, is because since the earning in 6 hours is $94.50, so the hourly wage would be, $15.75 because:

94.50/6 = 15.75

Graph B, for the first hour, the amount of dollars is correct, but in 11 hours, it says 25.75, which is not correct so Graph B cannot be it.

Graph C, shows that at hour 1, that it is 15.75 dollars, but at hour 2 16.75, as well with hour 3, 17.75. The graph is showing an increase of 1 dollar per hour, which is not correct so graph C is not it.

Graph D shows that at hour 6, there is $94.50, which is correct, but at hour 12, its 100.50. This is not true because , the hour has increased by 6, and when it increased by 6, the amount of pay increased by 6 as well, which is not the right way in which you would do so.

Option A is correct!

Step-by-step explanation:

Hope it helps! =D

Answer:

-10x + 2

Step-by-step explanation:

So in order simplify the equation you have to add all the variables together and all the numbers together in this equation:

-9x + 3 - x - 1

So we are going to add -9x and x together while adding 3 and -1 together:

-9x + (-x) = -10x

3 - 1 = 2

So that would make the equation look like this:

-10x + 2

Tada! You have simplified the equation!!! Hope this helps you!!!

The value of x and the unknown angles of the triangle are as follows;

The exterior angle theorem states that the measure of an exterior angle is equal to the sum of the measures of the two remote interior angles of the triangle.

Therefore, let's find the value of x using the exterior angle theorem.

Hence,

37 + 3x + 47 = 5x + 62

3x - 5x + 37 + 47 = 62

-2x = 62 - 37 - 47

-2x = -22

x = -22 / -2

x = 11

Therefore, the angles are as follows:

3x + 47 = 3(11) + 47 = 33 + 47  = 80 degrees

5x + 62 = 5(11) + 62 = 55 + 62 = 117 degrees

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Free variables are variables used to represent parameters

Free variables are placeholders or symbols in mathematics and logic that are not constrained by any quantifiers or other specified conditions within an expression, formula, or equation.

When the expression is evaluated, they stand for values that can change or be given different values. In equations or functions, free variables are frequently employed to represent unknowns or parameters.

Free variables enable flexibility and generality in mathematical reasoning since they can be given various values to investigate various situations or solutions. In contrast, bound variables have a specific scope within a certain context or statement and are constrained by quantifiers.

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This equation has the form:

with a = -2, b = -12, and c = 3

The x-coordinate of the vertex is found as follows:

The y-coordinate of the vertex is found replacing the x-coordinate into the equation:

vertex: (-3, 21)

The axis of symmetry is:

Given that a is negative, then the vertex is a maximum

Important points to conduct a survey are; to gather information, make informed decisions, evaluate programs or services, identify trends, assess needs.

Surveys are conducted for a variety of reasons, including gathering information, making informed decisions, evaluating programs or services, identifying trends, and assessing needs. By using surveys, organizations can collect valuable data that can be used to inform decisions, improve programs or services, and better understand their target audience.

Surveys, also known as questionnaires, are used to gather information from a targeted group of individuals or a population. Surveys are an important tool for collecting data in a structured manner and can be used for a variety of reasons. Here are some of the reasons why surveys are conducted:

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Answer:

The sum will be close to 1/4

Step-by-step explanation:

1/8+1/6 is 7/24, and 1/4th of that is 6/24, so it is very close.

Answer: The sum will be close to 1/4

Step-by-step explanation:

You can start by making the fractions have the same denominator, (8*6) which gets you 48

You then want to use the butterfly method, so 1/8 becomes 6/48 and 1/6 becomes 8/48. You then add these up to 14/48.

12/48 is 1/4, and 14/48 is close to 12/48, thus making the answer the first option.

The probability that the randomly chosen athlete is either a football player or a basketball player is: 0.9 or 90%.

To find the probability that the randomly chosen athlete is either a football player or a basketball player, we need to add the probabilities of these two events and subtract the probability of the intersection of these events.

Let F be the event that the athlete is a football player and B be the event that the athlete is a basketball player. Then, we have:

P(F) = 0.5 (50% are football players)

P(B) = 0.44 (44% are basketball players)

P(F ∩ B) = 0.04 (4% play both football and basketball)

To find the probability that the athlete is either a football player or a basketball player, we can use the formula:

P(F ∪ B) = P(F) + P(B) - P(F ∩ B)

So Plugging in the values, we get:

P (F ∪ B) = 0.5 + 0.44 - 0.04

= 0.9

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Answer:

The 93% confidence interval is   \( 26.52   <  \mu < 33.48 \)

Step-by-step explanation:

From the question we are told that

    The sample size is  n =  41

     The mean is  \(\= x = 30\)

     The standard deviation is  \(\sigma = 12.3\)

From the question we are told the confidence level is  93% , hence the level of significance is    

      \(\alpha = (100 - 93 ) \%\)

=>   \(\alpha = 0.07\)

Generally from the normal distribution table the critical value  of  \(\frac{\alpha }{2}\) is  

   \(Z_{\frac{\alpha }{2} } =  1.81\)

Generally the margin of error is mathematically represented as  

      \(E = Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }\)

=>   \(E =  1.812  *  \frac{12.3}{\sqrt{41} }\)  

=>     \(E =  3.48 \)  

Generally 93% confidence interval is mathematically represented as  

      \(\= x -E <  \mu <  \=x  +E\)

=>    \( 30  -3.48  <  \mu < 30  + 3.48 \)

=>     \( 26.52   <  \mu < 33.48 \)