How do I find the values for a, b, and c, to complete the solution?

How Do I Find The Values For A, B, And C, To Complete The Solution?

Answers

Answer 1
Answer:

The values a, b, and c are: a = - 4, b = 3, c = 6

The solutions to the equation are: x = - 4 + 3√6 and x = - 4 - 3√6

Explanation:

1) First step is complete squares:

x² + 8x = 38 ← given

x² + 8x + (8/2)² = 38 + (8/4)² ← add square of the half of 8

x² + 8x + 16 = 38 + 16 ← solve the parenthesis

x² + 8x  + 16 = 54 ← combine like terms

2) Second, solve the equation:

(x + 4)² = 54 ← factor the perfect square trinomial

(x + 4) = +/- √54 ← extract square root of both sides

x = - 4 +/- √54 ← subtract 4 from both sides

x = -4 +/- 3√6 ← simplify the root

x = - 4 + 3√6 and x = - 4 - 3√6 ← separate the two solutions

3) Third, compare with the solutions shown:

x = a + b√c and x = a - b√c

⇒ a = -4, b = 3, c = 6


Related Questions

The number of students enrolled at a community college increase by 12% from last year to this. The enrollment last year to this year was 15,500 how many students are enrolled this year

Answers

12% = 12% x 15500 = 0.12 x 15500 = 1860

Number of students this year = 15,500 + 1860 = 17,360

Answer: 17,360

The number of  students enrolled this year are 17,360.

What is percentage?

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

Given that, the number of students enrolled at a community college increase by 12% from last year to this.

The enrollment last year to this year was 15,500.

Increased number of students are

12% of 15500

= 12/100 ×15500

= 12×155

= 1860

Number of students enrolled this year are 15,500+1860

= 17360

Therefore, the number of  students enrolled this year are 17,360.

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Identify the values that create ordered pairs that are solutions to the equation 3x - 5y = 20.

(5,y) (x,2)

Answers

X=10 Y=1

thats your answer hope it helps ;P
3x - 5y = 20

(5; y)  -  put x = 5 to the equation

3 · 5 - 5y = 20
15 - 5y = 20  |-15
-5y = 5  |:(-5)
y = -1

Answer: (5; -1)

(x; 2)  -  put y = 2 to the equation

3x - 5 · 2 = 20
3x - 10 = 20    |+10
3x = 30    |:3
x = 10

Answer: (10; 2)

What is the place value of the digit 4 in 6,296.04

Answers

Hoi!

The digit 4 is in the hundredths place, since it's behind a decimal.

Place value in front of a decimal goes as:

Ones, tens, hundreds, thousands, etc

Place value behind a decimal goes as:

Tenths, Hundredths, Thousandths, etc

The digit 4 in 6,296.04 is in the hundredths place, representing four hundredths or 4/100. This can also be expressed in scientific notation as 4 x 10⁻².

The place value of the digit 4 in 6,296.04 is in the hundredths position. This is because the digit 4 is two places to the right of the decimal point. In a decimal number, the first place to the right of the decimal point is the tenths place, the second is the hundredths place, and it continues with thousandths, ten-thousandths, and so on. Therefore, in the number 6,296.04, the 4 represents four hundredths, or 4/100, which can also be written in scientific notation as 4 × 10⁻².

Help me please i need help

Answers

solution would be: a value or values that make a mathematical sentence true.
1. equation: a mathematical sentence whose verb is 'equal' (=). 
Note that equation means " that two mathematical expressions are equal each other"

2. Solution: A value or values that make a mathematical sentence true. 

Another word for Solution can be "answer", or the 'final product' of an expression (now turned into equation)


hope this helps

Write the expression in complete factored form 5(y-7)+b(y-7)

Answers

the answer is (y-7)(5+b)

Larry bought a trampoline measuring 10 feet by 12 feet. what is the length of the diagonal of the trampoline?

Answers

we know that
Applying the Pythagorean theorem

c²=a²+b²
c is the diagonal
a=10 ft
b=12 ft
c²=10²+12²------> c²=244--------> c=√244--------> c=15.62 ft

the answer is
the length of the diagonal of the trampoline is 15.62 ft

The perimeter of a rectangle is 26 inches and its area is 40 square inches. what are its​ dimensions?

Answers

Answer:
The shorter side is 5 inches and the longer side is 8 inches.

Explanation:
We start by listing formulas for solving for the area and perimeter of a rectangle, which will then determine how we find the dimensions we are looking for.

The area of a rectangle is length (l) times width (w), often represented as:
A = l(w), or A = lw

The perimeter of a rectangle is the sum of twice the length and twice the width, often represented as:
P = 2l + 2w

If product of length and width is 40 inches per the rectangle's given area, then a factor pair of 40 must be the dimensions of the rectangle. These values can then be checked to see if they also satisfy the perimeter of the rectangle.

So first, list factors of 40:
1, 40; 2, 20; 4, 10; 5, 8

Now, we plug these pairs into the perimeter equation.
2(1) + 2(40) = 2 + 80 = 82
82 > 26

2(2) + 2(20) = 4 + 40 = 44
44 > 26

2(4) + 2(10) = 8 + 20 = 28
28 > 26

2(5) + 2(8) = 10 + 16 = 26
26 = 26
Therefore, the factors 5 and 8 are what we use. 5 inches by 8 inches are the dimensions.

The school yearbook committee surveyed the student body for an article about colleges in which they are pursuing enrollment. the table below shows the number of students in each grade level; who are pursuing one or more colleges. If there are 170 students in 12th grade, what percentage of the twelfth grade students have more than one college in mind? round your answer to the nearest percent

12th grade-----             1 college= 75    2 colleges= 27      3 colleges or more= 23

Answers

Given that 27 12th grade students have 2 colleges in mind and 23 12th grade students are considering 3 colleges or more. If there are 170 students in 12th grade, the percentage of the twelfth grade students that have more than one college in mind is given by:

[tex] \frac{27+23}{170} \times100\%= \frac{50}{170} \times100\% \\ \\ =29.4\%[/tex]

Which of the following represents the zeros of f(x) = 6x3 − 35x2 + 26x − 5?

-5,1/3,1/2
5,-1/3,1/2
5,1/3,-1/2
5,1/2,1/3

Answers

The last option 5,1/2,1/3 is the answer

we have

[tex]f(x)=6x^{3}-35 x^{2} +26x-5[/tex]

we know that

The zeros of the function are the values of x when the value of the function is equal to zero. The zeros of the function are the x-intercepts of the function

Using a graphing tool

see the attached figure  

the answer is the option

[tex](5,\frac{1}{2}, \frac{1}{3})[/tex]



What constant term should be used to complete the square? x 2 - 5x + _____ = 7

Answers

For this case we have an expression of the form:
 x ^ 2 - 5x + _____ = 7
 To complete the square, we must add to both sides of the equation a constant of the form:
 (b / 2) ^ 2
 We have then:
 x ^ 2 - 5x + (-5/2) ^ 2 = 7 + (-5/2) ^ 2
 Rewriting we have:
 x ^ 2 - 5x + 6.25 = 7 + 6.25
 x ^ 2 - 5x + 6.25 = 13.25
 Answer:
 
The constant term that should be used to complete the square is:
 
6.25
the correct answer is 25/4 so  choose letter  as you answer have beautiful day.

In a large population, 61 % of the people have been vaccinated. if 4 people are randomly selected, what is the probability that at least one of them has been vaccinated?

Answers

Final Answer:

The probability that at least one of the four randomly selected people has been vaccinated is approximately 0.9606.

Explanation:

To find the probability that at least one of the four randomly selected people has been vaccinated, we can use the complement rule. The complement of "at least one person vaccinated" is "none of the people vaccinated." Then, we subtract the probability of none of them being vaccinated from 1.

Given that 61% of the population has been vaccinated, the probability that a randomly selected person has been vaccinated is [tex](P(\text{vaccinated}) = 0.61\)[/tex].

So, the probability that a randomly selected person has not been vaccinated is [tex]\(P(\text{not vaccinated}) = 1 - P(\text{vaccinated}) = 1 - 0.61 = 0.39\).[/tex]

Now, we can find the probability that none of the four randomly selected people has been vaccinated:

[tex]\[P(\text{none vaccinated}) = (0.39)^4\][/tex]

And the probability that at least one of them has been vaccinated is the complement of this:

[tex]\[P(\text{at least one vaccinated}) = 1 - P(\text{none vaccinated}) = 1 - (0.39)^4\][/tex]

Let's calculate it:

[tex]\[P(\text{at least one vaccinated}) = 1 - (0.39)^4\][/tex]

[tex]\[P(\text{at least one vaccinated}) \approx 1 - 0.0394179 \][/tex]

[tex]\[P(\text{at least one vaccinated}) \approx 0.9605821\][/tex]

So, the probability that at least one of the four randomly selected people has been vaccinated is approximately 0.9606.

The probability that at least one of the 4 randomly selected people has been vaccinated is calculated using the complement rule and is found to be 0.9769.

To determine the probability that at least one of the 4 randomly selected people has been vaccinated, we can use the complement rule. The probability of an individual not being vaccinated is 1 - 0.61 = 0.39.

We need to calculate the probability that none of the 4 selected people are vaccinated and subtract this from 1:

Probability that a single person is not vaccinated: 0.39Probability that all 4 people are not vaccinated: 0.39⁴0.39⁴ = 0.0231

Thus, the probability that at least one of them is vaccinated is:

1 - 0.0231 = 0.9769

Therefore, the probability that at least one of the 4 randomly selected people has been vaccinated is 0.9769.

Help me please and I will return the favor !

Answers

The answer is c) Step 3
The explanation is self explanatory
i think the answer would be c

Angles 4 and 5 form what type of angles?

Answers

Hi there! The answer is opposite / vertical angles.

Angles 4 and 5 form opposite angles, which means they are the same in size. This type of angle is also called vertical angle, and arise when two lines intersect.

Angles 4 and 5 form a pair of vertical angles. Vertical angles are two angles that are opposite each other when two lines intersect. They have the same measure and are congruent.

Vertical angles are a pair of angles formed when two lines intersect. In this case, angles 4 and 5 are considered vertical angles because they are opposite each other at the point where the lines intersect. These angles have a special property: they are congruent, which means they have the same measure. This is a fundamental principle in geometry.

Imagine drawing two straight lines that intersect, creating four angles. Angles 4 and 5 are positioned opposite each other, and they share the same measurement. This relationship is true regardless of the lengths of the lines or the specific angles involved. It's a geometric rule that holds true in all cases where vertical angles are formed.

Understanding vertical angles is important in various mathematical and geometric applications, as it allows us to make deductions about the relationships between angles and lines in different configurations.

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Suppose your friend’s parents invest $20,000 in an account paying 5% interest compounded annually. What will the balance be after 10yr?

Answers

Answer: $32,577.90

A = P (1+ r/n)^nt
P= 20000
R = .05
n = 1
t = 10

To find the balance after 10 years when $20,000 is invested at 5% interest compounded annually, we can use the formula for compound interest:

A = P(1+r)ⁿ

Where:

*A is the complete volume of money obtained after

*n years, including interest.

*P embodies the initial investment, or the principle amount.

*The yearly interest rate, calculated by decimal, is r.

*n is the number of periods the money has been put into investments for.

Given:

*P = $20,000

*r = 5% = 0.05

*n = 10 years

Taking appropriate values to carry out the calculation:

A = 20000(1 + 0.05)¹⁰

A = 20000(1.05)¹⁰

Now, let's calculate:

A ≈ 20000 × (1.05)¹⁰

A ≈ 20000 × 1.62889462677744

A ≈ 32577.89

So, the balance after 10 years will be approximately $32,577.89.

After 10 years, the balance of the investment can be calculated using the formula for compound interest: A = P(1+r)ⁿ

Where:

*A is the amount of money accumulated after

*n years, including interest.

*P is the principal amount (the initial investment).

*r is the annual interest rate (in decimal).

*n is the number of times the interest is compounded per year.

In this case, the principal (P) is $20,000, the annual interest rate (r) is 5%, and the investment is compounded annually. Substituting these values into the formula:

A = 20000(1.05)¹⁰

A ≈ 20000 × (1.05)¹⁰

After computation, the balance after 10 years is approximately $32,577.89. This represents the accumulated amount including the initial investment and the interest earned over the 10-year period.

Complete Question:

Suppose your friend’s parents invest $20,000 in an account paying 5% interest compounded annually. What will the balance be after 10yr?

Aubrey has a new art box in the shape of a rectangular prism. The box is 5 inches, by 8 inches, by 2 inches. How much volume is not take-up by the eraser if the dimension of the eraser is 5.5 inches^3

Answers

I think the answer is 74.5

volume of the rectangular prism = base area * height

base area = length * breadth

volume of the rectangular prism = length * breadth * height

volume of the rectangular prism = 5*8*2 = 80 inches ^3

volume of taken up by the eraser = 5.5 inches^3

volume that is not take-up by the eraser = 80-5.5 = 74.5 inches^3

Find the value of z /2 that corresponds to a confidence level of 89.48%.

Answers

Answer:  [tex]1.6202[/tex]

Step-by-step explanation:

The given confidence level : c= 89.48%.

⇒ c= 0.8948   [ in decimal]

Then, the significance level = [tex]\alpha= 1-c[/tex]

[tex]=\alpha= 1-0.8948=0.1052[/tex]

Now, to find the value of [tex]z_{\alpha/2}[/tex] , we need to find the two -tailed z-value using z-table for [tex]\alpha=0.1052[/tex] or we can also find the one-tailed z-value for  for [tex]\alpha/2=0.1052/2=0.0526[/tex]

Using z-value table , the value is [tex]1.6202[/tex]

Hence , [tex]z_{\alpha/2}=1.6202[/tex] that corresponds to a confidence level of 89.48%.

Using confidence interval concepts, it is found that the critical value is [tex]z_{\frac{\alpha}{2}} = 1.62[/tex]

For a confidence level of [tex]\alpha[/tex], the critical value of z is z with a p-value of:

[tex]\frac{1 + \alpha}{2}[/tex]

The p-value is found looking at the z-table.

In this problem, confidence level of 89.48%, thus [tex]\alpha = 0.8948[/tex] the p-value of the z-score is:

[tex]\frac{1 + 0.8948}{2} = 0.9474[/tex]

Looking at the z-table, this value is [tex]z_{\frac{\alpha}{2}} = 1.62[/tex].

A similar problem is given at https://brainly.com/question/15354742

The was designed to make it easier for people to own a home.

A. community reinvestment act of 1977

B. federal home loan mortgage corporation

C. comprehensive mortgage reform act

D. federal national mortgage association

Answers

the answer is A. community reinvestment act (CRA) of 1977

How do you work with bidmas?

Answers


BIDMAS

1) Brackets
2) Indices
3) Division and Multiplication. Start on the left and work them out in the order that you find them
4) Addition and Subtraction. When only addition and subtraction are left in the sum work them out in the order you find them. starting from the left of the sum and working towards the right.

What is EC if AC = 12, BC = 5, and DC = 4?

A. 30
B. 9
C. 15
D. 7

Answers

we need to find ED first

the formula for this would be (AB +BC)*BC = (ED+DC)*DC

lets replace the letters with the given numbers:

If AC = 12 and BC = 5 then AB = 12-5 = 7

so we get:
(7+5) *5 = (ED+4)*4

12*5 = (ED+4)*4

60 = (ED+4)*4

60/4 = (ED+4)

15 = ED +4

ED = 15-4 = 11

now add ED + DC to get EC

11+4 = 15
 The answer is C. 15

10 POINTS!!! FULL ANSWER IN STEP BY STEP FORMAT!! ALL PARTS A, B, C, D, E

Answers

The first thing to do is to get the graph. That's below. That is a very wicked looking graph. I'm not sure what happens at 0. I'm not sure it is continuous at 0. That's something to make a fuss over because x = 0  is one of the x intercepts.

y = - x^(2/5)(x(5/5) + 7).
y = - x^(2/5)(x + 7)
So one of the x intercepts is 0 and the other one is -7.

The reasons are known because the factors can be equated to 0. It does not look to me like there is exact symmetry. There is a local minimum however at what the graph says is (-2,-6.5 or so)
You could differentiate that to find the exact point, but you are not asked for that.

So the domain is from -∞ to zero and 0 to plus ∞ I think you have to exclude 0 even though it is an x intercept. 

The graph decreases from -∞ < x < -2
It increases from -2 < x < 0
It decreases form 0< x < ∞

The window is 60 inches wide. What is the width of the window in feet.

Answers

The width of the window in feet is 5 feet.
The Width Of The Window In Feet Is 5 Feet Because Every Foot Is 1 Inch.

60 Divided By 12 = 5

Answer: 5 Feet

Linda has completed 24 deliveries so far this week. she needs to make 40 deliveries for the week. what percentage of her deliveries has linda completed?

Answers

Final answer:

Linda has completed 60% of her deliveries for the week.

Explanation:

Linda has completed 24 deliveries out of a total of 40 deliveries for the week. To find the percentage of deliveries Linda has completed, we can divide the number of completed deliveries by the total number of deliveries and multiply by 100.

Percent of deliveries completed = (Number of completed deliveries / Total number of deliveries) * 100

Percent of deliveries completed = (24/40) * 100 = 60%

A ball is kicked into the air and follows the path described by h(t)= -4.9t^2+6t+0.6. where t is the time in seconds and h is the height in meters above the ground. Find the maximum height of the ball. What value would you have to change in the equation if the maximum height of the ball is more than 2.4 meters?

FIND THE VETEX!!!!

Answers

For this case we have the following equation:
 h (t) = -4.9t ^ 2 + 6t + 0.6
 Deriving we have:
 h '(t) = -9.8t + 6
 We equal zero and clear t:
 -9.8t + 6 = 0
 9.8t = 6
 t = 6 / 9.8
 t = 0.61
 We substitute the value of time in the equation of the height:
 h (0.61) = -4.9 * (0.61) ^ 2 + 6 * (0.61) +0.6
 h (0.61) = 2.44m
 For the height to be higher than 2.44m, two values can be changed:
 Initial speed: 6
 Initial height: 0.6
 Answer:
 
The maximum height of the ball is:
 
h (0.61) = 2.44m
 
You would have to change in the equation if the maximum height of the ball is more than 2.4 meters:
 
Initial speed: 6
 or
 
Initial height: 0.6

Find the slope of the line graphed below

Answers

4/6, but the simplified form of it is 2.3

The slope of the line is 2/3

To find the slope of the line, first choose two points that are on the line. For this example we'll use (0, -4) and (6, 0). Now use the slope formula with these two points to find the slope.

m(slope) = (y2 - y1)/(x2 - x1)

m = (0 - -4)/(6 - 0)

m = (0 + 4)/(6 - 0)

m = 4/6

m = 2/3

maria's school is selling tickets to a choral performance. on the first day of ticket sales the school sold 4 adult tickets and 1 child ticket for a total of $47. the school took in $58 on the second day by selling 5 adult tickets and 1 child ticket. what is the price each of one adult ticket and one child ticket?

Answers

For this case, the first thing we must do is define variables.
 We have then:
 x = price of adult tickets
 y = price of child tickets
 We write the system of equations:
 4x + y = 47
 5x + y = 58
 Solving the system of equations we have:
 x = 11
 y = 3
 Answer:
 
11 $ price of adult tickets
 
3 $ price of child tickets

Which statement is true about the circumference of a circle?
The circumference is the measurement around the circle.
The circumference is the measurement of the radius.
The circumference is the measurement of the diameter.
The circumference is double the radius.

Answers

A.) the circumference is the measurement around the circle

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circumference of a circle:-The circumference is the measurement around the circle.

The ratio of the height of a wall to the length of the wall is 2:3. the area of the wall is 384 sq. ft. what are the height and length of the wall?

Answers

The dimensions of the wall are found by defining variables based on the given ratio and area, resulting in a height of 16 ft and a length of 24 ft.

The question involves finding the dimensions of a wall given the ratio of its height to length and its total area. To solve this, let's denote the height of the wall as 2x and the length of the wall as 3x, based on the ratio 2:3. The area of the wall is the product of its height and length, which means (2x) ×(3x) = 384 sq. ft.

Now, by simplifying the equation, we get [tex]6x^2[/tex] = 384. Dividing both sides by 6 gives us [tex]x^2[/tex] = 64. Taking the square root of both sides, we find x = 8. Therefore, the height of the wall is 2x = 16 ft and the length of the wall is 3x = 24 ft.

help plzzzzzzzzz????? asapp

Answers

The two angles are a linear pair.
(Explanations down below!)

Linear pair angles must add up to 180 degrees. You can tell that the two angles add up to 180 degrees because they form a straight line (which is 180 degrees).

Complementary angles add up to 90 degrees. The two angles are not complementary because they do not form a 90 degree angle (right triangle, square in corner, like a L shape).

Vertical angles are opposite each other and are equal to one another. These angles are adjacent to each other and do not look similar.

A car leaves a town at 70 kilometers per hour. how long will it take a second car, travelling at 125 kilometers per hour, to catch the first car if it leaves 1 hour later?

Answers

it will take about 1 hour and 15 minutes

If 8a−4b=20 and 4a−8b=4, then what is the value of a−b?

Answers

I’m more than likely wrong but 2 and 5
first simplify the equations to make it easier.
2a-b=5
a-2b=1
a=1+2b
plug that into the first equation.
2+4b-b=5
b=1
a=3
 3-1=2  your answer therefore is 2.

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