The only solution of the equation x^2 +bc+16=0 is x=4 why is the value of b

Answers

Answer 1

Do you mean bc as the middle term, or is it bx?

If it has only a solution of x = 4, then you must have

(x - 4)(x - 4) = 0

x^2 - 8x + 16 = 0

-8x = bx

b = -8

Related Questions

Simplify. y^-3 pls help me i need this very bad

Answers

my understanding is that when the power is a negative number, move it to the denominator and change it to positive.
In this case, the base is y, the power is -3
y^(-3)=1/(y^3)

To take a taxi , it cost $3.00 plus an additional $2.00 mile traveled. you spent exactly $20 on a taxi, which includes the $1tip you left. how many miles did you travel?

Answers

Let's break it down.
You spent $20. Plus the $1 tip.
20 - 1 = 19
$19 is how much you spent without the tip
The cost for the taxi ride itself is $3
19 - 3 = 16
$16 is how much you spent without the ride cost + tip
You spent $2 for every mile traveled.
16/2=8

You traveled 8 miles

What’s the reciprocal of 7/2a

2a/7

-2a/7

7/2a

-7/2a

Answers

The reciprocal of a number (also called the multiplicative inverse) means 1/this number or (This number)^-1

So, to get the reciprocal of 7/2a, you need to divide 1 by this number as follows:
reciprocal = 1 / (7/2a) = 2a/7

The answer is : 2a/7

I really need help with these questions. What will these word problems look like?

A. The perimeter, P, of a rectangle is the sum of twice the length and twice the width.

1. P = 2(l+w) units

2. P = 2(5)+2(9) units

3. P = 4x units

4. P = (l+l)+(w+w) units

5. P = 2(x+3) units

B. The area, A, of a triangle is one-half the product of the triangle's base and height.

1. A = 1/2 (b+h)

2. A = 1/2(12)(5)

3. A = 1/2(b*h)

4. A = (x + y)/2

5. A = x^2/2

There is more than one answer to each problem. I will award brainliest answer, I really could use some help with this.

Answers

A. The perimeter, P, of a rectangle is the sum of twice the length and twice the width.

answer

1. P = 2(l+w) units
2. P = 2(5)+2(9) units
4. P = (l+l)+(w+w) units

B. The area, A, of a triangle is one-half the product of the triangle's base and height.

answer

2. A = 1/2(12)(5)

3. A = 1/2(b*h)

Given that f(a+b)= f(a) + f(b) and f(x) is always positive, what os the value of f(0)?

Answers

This is a strange question, and f(x) may not even exist. Why do I say that? Well..

[1] We know that f(a+b) = f(a) + f(b). Therefore, f(0+0) = f(0) + f(0). In other words, f(0) = f(0) + f(0). Subtracting, we see, f(0) - f(0) = f(0) or 0 = f(0).

[2] So, what's the problem? We found the answer, f(0) = 0, right? Maybe, but the second rule says that f(x) is always positive. However, f(0) = 0 is not positive!

Since there is a contradiction, we must either conclude that the single value f(0) does not exist, or that the entire function f(x) does not exist.

To fix this, we could instead say that "f(x) is always nonnegative" and then we would be safe.

A city has 7204 recycle bins. The city gives half of the recycle bins to it's citizens. The rest of the recycle bins are divided into 23 equal groups for city parks. How many recycle bins are left over?

Answers

The number of recycle bins that the city gives to citizens:
7204 : 2= 3602
The number of recycle bins is left:
7204 - 3602= 3602
The largest number of bins that can be given in each group:
3602 : 23 = 156 (residual: 14)
=> There are 14 bins left over.

What happens when you multiply a fraction by its reciprocal?

Answers

Multiplying by the reciprocal is the same as dividing by the original fraction
(1/2)/(3/4)=(1/2)*(4/3)=4/6=2/3

A rectangular swimming pool with a flat bottom is 20 feet by 12 feet. How long will it take to fill the swimming pool to 5 feet if water is being pumped into the pool at 30 cubic feet per minute?
A) 8 minutes
B) 40 minutes
C) 67 minutes
D) 120 minutes

Answers

Hi,

The answer to this question is going to be

20 feet * 12 feet * 5 feet
= 20 * 12 * 5 feet ^3
= 1200 feet^3

1200 feet^3 / (30 feet^3 / minute)
= (1200 / 30) minutes
= (120 / 3) minutes
= 40 minutes

Hoped I Helped

Find the average value of f over region
d. f(x, y) = 4x sin(y), d is enclosed by the curves y = 0, y = x2, and x = 7.

Answers

Final answer:

The question involves finding the average value of function f(x, y) = 4x sin(y) over a particular region. This is done using a double integral to integrate the function over the region and divide by the area of that region. The area of the region is determined using the given boundaries.

Explanation:

The subject of this question is calculus, specifically dealing with a double integral to find the average value of a function over the specified region. The given function is f(x, y) = 4x sin(y), and the region d is enclosed by the curves y = 0, y = x^2, and x = 7.

To find the average value of function f over the region d, you should use the formula for the average value of a function of two variables. This is given by: Avg = (1/Area(D)) ∫∫_D f(x, y) dA

Before we can use this formula, we need to find the area of region D. This can be obtained as a simple integral from the given boundaries: Area(D) = ∫ from 0 to 7 dx ∫ from 0 to x^2 dy = ∫ from 0 to 7 x^2 dx = [x^3/3]_0^7 = 343/3

We can then proceed with the double integration by applying the appropriate limits. This is a more complex process that requires substitutions and careful calculation. After evaluating the average value, you should get a numerical solution.

Learn more about Double Integral here:

https://brainly.com/question/28219133

#SPJ12

Final answer:

To find the average value of a function over a region, calculate the double integral of the function over that region and divide it by the area of the region.

Explanation:

To find the average value of a function over a region, we need to calculate the double integral of the function over that region and then divide it by the area of the region. In this case, the region d is enclosed by the curves y = 0, y = x-2, and x = 7. We can set up the integral as follows:

So, the average value of f over region d is 1.12.

Learn more about Average value of a function here:

https://brainly.com/question/22847740

#SPJ11

round 999.999 to the nearest tenth

Answers

999.9

to the left of the point you start with tenths then hundredths and so on

Answer: 1000
Reasoning:
For the number 999.999, the 0.9 is the tenth's digit.
Since the next number is 5 or greater, we round the 0.9 up. Now 0.9 rounded up is 1, so that takes away the decimals and adds one to the ones place value.
Since we are adding 1 to 9, it becomes 10, meaning the following 9 becomes a ten as well.
All said and done, it becomes 1000 from the rounding.

Absolute Value equations always have 2 answers.
True
False

Answers

The answer is, "False".

Each digit in the division example has been replaced with the same letter throughout (r stands for remainder) the digits used were 1, 2, 3, 4, 5, 7, and 9 find the numbers clue u is 5

Answers

Final answer:

This is a cryptarithm problem where every unique letter represents a unique digit. Given that 'u' equals 5, we would navigate the problem by dividing numbers out front and subtracting the exponents.

Explanation:

This question is about a form of a cryptarithm. Cryptarithms are mathematical puzzles where the digits are replaced by letters of the alphabet or other symbols. If the same letter appears more than once, it represents the same digit each time. Your question implies that each letter corresponds to a unique digit and that division is involved. Therefore, we need to figure out which numbers are represented by the remaining letters. You've already been given that 'u' represents 5. Since there isn't a complete problem provided, I can't offer a step by step guide on how to solve it. However, I can suggest to you to start the cryptarithm solution by dividing numbers out front and subtracting the exponents.

Learn more about Cryptarithm here:

https://brainly.com/question/37931086

#SPJ12

Final answer:

The question involves substituting the given number for a letter in a division problem and then solving it. It's a step-by-step process of trial and error.

Explanation:

In this problem, you are asked to find the numbers that replace the same letter throughout a division problem. Given that 'u' is 5, you know that wherever 'u' appears in your division equation, you can replace it with 5. Solve the division problem accordingly. Do not forget, each distinct letter represents a distinct number. It is a process of trial and error until you come up with the right numbers that fit the equation and abides by the division rules.

Learn more about Mathematics letter substitution here:

https://brainly.com/question/35444599

#SPJ11

A baker wants to put 3 3/4 pounds of apples in each pie sge makes. She purchased 52 1/2 pounds of apples. How many pies can she make?

Answers

52.5 / 3.75 = 14

She can make 14 pies.

divide 52 1/2 pounds by 3 3/4 pounds

52 1/2 / 3 3/4 = 14

she can make 14 pies

Convert 7 4/7 to a mixed decimal and rounded to the nearest thousandth.

Answers

you got to divide four by seven. You get 0.571, as thousandths are three decimal places out. you add 7 to it and get 7.571

The endpoints of a diameter of a circle a(-1,1) and b(3,3). what is the length of the radius

Answers

If we determine the distance from one point to the second point, we get the length of the diameter. This is calculated through the equation,

D= sqrt ((x2 – x1)^2 + (y2 – y1)^2)

Substituting the known values,

D = sqrt ((-1 – 3)^2 + (1 – 3)^2)

D = 4.47

The length of the radius is half that of the diameter. Hence, the radius is,

R = 4.47 /2 = 2.236

Answer: r = 2.24

Describe the end behavior of the function:

y = x3 + 3x2 - 2x + 4

a)left - rises, right - falls
b)left - rises, right - rises
c)left - falls, right - falls
d)left - falls, right - rises

Answers

The equation above is a cubic, since the highest degree present is a 3. The degree is odd and the function is positive, meaning the function travels from Quadrant 3 to Quadrant 1 (looking from left to right of the graph)
See the picture I added.
Therefore, the answer must be D.
Hope this helps

How do you verify that a hexagon formed by A=(0,0), B=(2,1), C=(3,3), D=(2,5), E=(0,4) and F=(-1,2) is equiangular? (I already know that it is equilateral)

Answers

The solution is attached. This is the only way I could verify if it is equiangular.

Final answer:

To verify that the hexagon is equiangular, calculate the slopes and angles of all sides using the coordinates of the vertices.

Explanation:

To verify that a hexagon is equiangular, we need to show that all interior angles of the hexagon are congruent. We can calculate the angles using the coordinates of the vertices A, B, C, D, E, and F.

Calculate the slope of each side of the hexagon. For example, for side AB with points A(0,0) and B(2,1), the slope is (1-0)/(2-0) = 1/2.Use the slope to find the angle using the formula arctan(slope). For side AB, the angle is arctan(1/2) = 26.57 degrees.Repeat steps 1 and 2 for all sides of the hexagon.If all six angles are equal, then the hexagon is equiangular.

Learn more about Equiangular Hexagon here:

https://brainly.com/question/31803879

#SPJ2

Read the following conjecture.

Any number that is divisible by 2 is also divisible by 8.

Find a counterexample to show that the conjecture is false

A: 16

B: 24

C: 28

D: 32

Answers

The answer to your question is C

16/2 =8, 16/8 = 2

24/2 = 12, 24/8 = 3

28/2 = 14, 28/8 = 3.5

32/2 = 16, 32/8 = 4

28 isn't divisible by 8

Answer is C

How to solve the second equation

Answers

[tex]\bf \textit{ vertex of a vertical parabola, using coefficients}\\\\ \begin{array}{lccclll} y = &{{ -0.02}}x^2&{{ +1}}x&{{ +6}}\\ &\uparrow &\uparrow &\uparrow \\ &a&b&c \end{array}\qquad \left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right) \\\\\\ \left( -\cfrac{1^2}{2(-0.02)}~~,~~6-\cfrac{1^2}{4(-0.02)} \right) \\\\\\ (\stackrel{\textit{how far ahead it went}}{25}~,~\stackrel{\textit{how high it went}}{18\frac{1}{2}})[/tex]

[tex]\bf \textit{ vertex of a vertical parabola, using coefficients}\\\\ \begin{array}{lccclll} y = &{{ -0.01}}x^2&{{ +0.7}}x&{{ +6}}\\ &\uparrow &\uparrow &\uparrow \\ &a&b&c \end{array}\qquad \left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right) \\\\\\ \left( -\cfrac{0.7^2}{2(-0.01)}~~,~~6-\cfrac{0.7^2}{4(-0.01)} \right) \\\\\\ (\stackrel{\textit{how far ahead it went}}{24\frac{1}{2}}~,~\stackrel{\textit{how high it went}}{18\frac{1}{2}})[/tex]

Alexander deposited money into his retirement account that is compounded annually at an interest rate of 7%.
Alexander thought the equivalent quarterly interest rate would be 2%. Is Alexander correct? If he is, explain
why. If he is not correct, state what the equivalent quarterly interest rate is and show how you got your
answer. i need to show my work and everything

Answers

The reason he is NOT correct is because a quarterly rate refers to 1/4 of a year. 7/4 does mot equal 2. it only equals 1.75, so his quarterly interest would be 1.75%.

A jet travels 510 miles in 2 hours. At this rate, how far could the jet fly in 15 hours? What is the rate of the speed of the jet?

Answers

First, find how much distance is covered in 1 hour

510/2 = 255.

Multiply 1 hour distance covered by 15

255*15=3825 miles

Hope I helped :)

vertical angles are opposite angles with the same vertex
true or false

Answers

true
Vertical angles are opposite angles with the same vertex

Will give brainliest if correct.

Answers

The answer is AB should be 2 feet not 3. :) Hopes this helps, have a good day.

It's b hope this helps

Robert climbed 775 steps in 12 1/2minutes. how many steps did he average per minute?

Answers

1162 is the awnser i believe

An air cargo plane can transport as many as 15 regular shipping containers. One supersize container takes up the space of 3 regular containers.

Answers

An air cargo plane can transport as many as 15 regular shipping containers. One super-size container takes up the space of 3 regular containers. Write an inequality to model the number of regular and super-size containers the plane can transport.

Let the number of regular containers the plane can transport be x and the number of super-size containers the plane can transport be y, then

Given that one super-size container takes up the space of 3 regular containers, i.e. y = 3x and that the capacity of the plane is 15 regular containers.

When the ship is not carrying any super-sized container, it can carry up to 15 regular containers and when the ship is not carrying any regular containers it can carry up to 5 super-sized containers.

Therefore, the inequality to model the number of regular and super-size containers the plane can transport is given by

x + 3y ≤ 15

Write a decimal number that, then round to the nearest tenth, is 0.3.

Answers

0.34 could round down to o.3

In a class of 10, there are 2 students who forgot their lunch.

If the teacher chooses 2 students, what is the probability that both of them forgot their lunch?

Answers

Answer:2/10

Step-by-step explanation: 10 students, 2 of them forgot their lunch. So 2/10 of the students will be chosen by the teacher

If the length of the rectangle is twice the width and the perimeter of the rectangle is 30 cm find its area

Answers

Lets let width=x meters.
Length is twice the width, twice meaning two times and we know that the width is x so length = 2x.
The perimeter is the sum of all the sides or width + width + length + length which is equal to x + x + 2x + 2x by substituting x for width and 2x for length. We know that x is really 1x since 1 times anything is that anything.
So the perimeter can be written as 1x + 1x + 2x + 2x which we are told is equally 42 meters. We reduce the equation by collecting all terms that have the same variables so we get (1 + 1 + 2 + 2 )x = 42. Adding the collected terms together we get 6x = 42. Now we solve for x by dividing both sides of the equation by six. Whatever we do to one side we have to do to the other so the equation remains balanced. So 6x divide by 6 is 1x or we can just say x, and 42 is divided 6 giving us 7. So x = 7. Going back to our original stated facts width = x = 7 and length = twice the width or 2x = 2 (7) =14. So
width = 7 meters
legth = 14 meters

We can double check this since we know the formular for the perimeter = width + width + length + length = 7 + 7 + 14 + 14 = 42.

Evaluate the function f(x)=−4x−3 f(x)=−4x−3 for x=−6x=−6.

Answers

what does x equal?? for the questions

PLEASE HELP ASAP!! Will give brainliest!

Answers

1/2n + 3/4n = 1/2 ...multiply by common denominator 4

2n + 3n = 2

5n = 2

n = 2/5

So... n = 2/5

I hope this helped! : )
Please rate and thank!

Other Questions

What was happening in clifden galway in 1839? Which of the following best describes where Clovis artifacts are generally found In how many ways can 3 boys and 3 girls sit in a row if the boys and girls are each to sit together? Boats can travel anywhere between 50 and 150 kilometers per hour. Choose a speed between 50 and 150. Convert the speed you chose into meters per second What were some of the issues that impeded the implementation of President Wilsons ideal peace plan? Considering the authors use of appeals in their passages, which paragraph most appeals to logos? paragraph 1 of Silent Spring paragraph 1 of Save the Redwoods paragraph 3 of Silent Spring paragraph 4 of Save the Redwoods Based on evidence from your text why did Washington rejected by server Jefferson and Hamilton and adopt a policy of neutrality?A. The nation could not afford another war so soon after the revolution. B. Washington was timid about taking military action. C. Washington feared that war would divide the nation. D. Washington was upset over the murder of the French king. I picked C. Am i correct? what approximately is the percent uncertainty for the measurement 5.2 Solve for r: C = 2pir. r = C over 2 pi r = 2 c all over pi r = C over pi r = pi times C all over 2 explain................... When actively growing cells are treated with taxol, they often are unable to complete the cell cycle. based on what you have learned about cell-cycle checkpoints, which checkpoint likely causes these cells to arrest? explain your reasoning? Two trains leave stations 216 miles apart at the same time and travel toward each other. one train travels at 85 miles per hour while the other travels at 95 miles per hour. how long will it take for the two trains to meet Divide m2n2/p3 by mp/n2 . What lobe of the brain allows you to know someone is scratching your back? The most important feature of hebrew poetry is ___? During anaerobic cellular respiration in skeletal muscles, pyruvic acid produced by _____ is converted into _____. A 55 kg person moves at the constant speed of 7 m/s along a straight stretch of track for 20s. How far does he travel in this time ? A 8.40 kg mass suspended from a spring with spring constant, k = 875.0 n/m, extends it to a total length of 0.250 m. find the total length of the spring when a 17.20 kg mass is suspended from it. During the debate of 1850, ____ argued that there was a higher law than the constitution that compelled him to demand the exclusion of slavery from the territories. What goes in the blank mi amigo y yo ____ muy ocupados hoy Steam Workshop Downloader