Two of the steps in the derivation of the quadratic
formula are shown below.
Which operation is performed in the derivation of the
quadratic formula moving from Step 6 to Step 7?
subtracting bi from both sides of the equation
Step 6: barangan = (x +
Step 7: tvb22400 = x +
squaring both sides of the equation
taking the square root of both sides of the equation
taking the square root of the discriminant
Please help quick

Answers

Answer 1

Answer:

a

Step-by-step explanation:

Answer 2

Answer:

c

Step-by-step explanation:

taking the square root of both sides of the equation


Related Questions

On Sunday afternoon, the ratio of adults to children at the park was 1 to 3. There were 48 children at the park.
How many adults were at the park​

Answers

Answer:

16 adults

Step-by-step explanation:

There were 3 times more children than adults at the park.

That means that dividing the number of children by 3 would give us the number of adults.

48 / 3 = 16

Answer:

16:48 Therefore, 16 adults

Step-by-step explanation:

Please someone help me answer this! Rico is making 6 batches of salsa. Each batch needs 3/4 cup of corn. He only has 1/4 cup measure. How many times must Rico measure 1/4 cup of corn to have enough for all the salsa?

Answers

Answer:

18

Step-by-step explanation:

3/4 divided by 1/4 equals 3

3 times 6 equals 18

The two right triangular prisms are similar solids.
The scale factor of the larger prism to the smaller prism
is 3. How do the volumes compare?
The volume changes by 3.
The volume changes by
, or 2
The volume changes by
lo

Answers

Answer:

The volume of the larger prims is eight times greater than the smaller prism.

Step-by-step explanation:

If the scale factor of the larger prims to the smaller prism is 3, that means each side is triple.

We know the a triangular prims has a volume defined by

[tex]V_{small} =\frac{b \times h_{1} }{2} \times h_{2}[/tex]

If we take that formula as the smaller prism, then the larer prism has a volum of

[tex]V_{large} =\frac{2b \times 2h_{1} }{2} \times 2h_{2}=8(\frac{b \times h_{1} \times h_{2} }{2} )[/tex]

If we compare, we can deduct that

[tex]V_{large}=8V_{small}[/tex]

In words, the volume of the larger prims is eight times greater than the smaller prism.

Answer:

Answer Choice 3

Step-by-step explanation:

on edge 2020

When ringing up a customer,a cashier needs 10seconds to process payment as well as 1second to scan each item being purchased .How long does it take to ring up a customer with 37 items ? Answer

Answers

Answer:

  47 seconds

Step-by-step explanation:

It takes 37 seconds to scan 37 items at the rate of 1 second per item. It takes an additional 10 seconds to process the payment. Then the total time is ...

  37 +10 = 47 . . . seconds

What is the greatest common factor
of 48 and 120?

Answers

Answer:

24

Step-by-step explanation:

Please help me idk this

Answers

Answer:

34.54 inches.

Step-by-step explanation:

The formula for the circumference of the circle is given as [tex]C=\pi d[/tex], where [tex]\pi[/tex] is rounded to 3.14 and d is the diameter of the circle, 11 inches. Simply plug these values into the equation for the circumference to get your answer:

[tex]C=\pi d\\C=(3.14)*(11)[/tex]

C = 34.54 inches

Answer:

34.54 inches

Step-by-step explanation:

C=πd

d=11

C = 11 * 3.14

C = 34.54 inches

How many minutes is it from 4:00 to 4:30

Answers

Answer:

30 minutes

Step-by-step explanation:

Just look at the minutes only. Since you need 4 o'clock to 4:30, its only 30 minutes.

Answer:

30 minutes

Step-by-step explanation:

All you have to do is subtract 4:30 and 4:00 and get 30 minutes.

Which is equivalent to 4!
(4 factorial)?

look at picture ​

Answers

Answer:

C. 24

Step-by-step explanation:

4!=24

Apply factorial rule: n! = 1 * 2 * 3 * ... * n

4! = 1 *2 * 3 * 4

1 *2 * 3 * 4 = 24

4! = 1 *2 * 3 * 4 = 24

4!=24

Would having deadbolt locks on exterior doors affect a homeowner's insurance policy price? Why or why not? Answer in complete sentences.

Answers

Answer:

Having a deadbolt lock installed on the exteriors of a building would affect the price of Insurance.

The principles of insurance require that the Insurance Policy Holder or Insured should act as if uninsured. This means that even with an Insurance Policy in place, the owner of this house is required to ensure that all reasonable steps have been taken to secure the house.

This may include having a properly installed lock in place.

The price or insurance premium of a homeowner may go up very significantly if there is no lock installed, that is if the risk is accepted for coverage by the insurance company.

It (the premium that is) may or may not come down if there is a deadbolt lock in place. It all depends on the extent to which the deadbolt lock has reduced the exposure of the Insurance company. Where the deadbolt lock has very significantly reduced the risk, the policyholder may press for a reduction in insurance premium.

In most Homeowners Insurance policy, for a claim concerning theft of insured home items, the policyholder has to provide evidence of forceful entry or exit, showing that the house was reasonably secured to warrant a breaking in or breakout.

Cheers!

   

A fish tank has a length of 4 feet and width of 18 inches. The fish tank is 3 feet high and is filled to within 4 inches of the top of the tank. What is the volume of water in the tank?

Answers

The volume of water in the tank, with a length of 4 feet, width of 1.5 feet, and filled to within 4 inches of the top, is approximately 42.667 cubic feet.

To find the volume of water in the tank, we need to calculate the volume of the portion of the tank that is filled with water.

1. First, let's convert all the measurements to the same unit. Since the height of the tank is given in feet and the width is given in inches, let's convert the width to feet.

Given:

- Length = 4 feet

- Width = 18 inches

- Height = 3 feet

- Water level = 4 inches from the top

Converting width to feet:

1 foot = 12 inches

So, 18 inches = 18/12 = 1.5 feet

Now, we have:

- Length = 4 feet

- Width = 1.5 feet

- Height = 3 feet

- Water level = 4 inches from the top

2. Calculate the height of the water in the tank:

Total height of the tank = Height of tank - Distance from the top to the water level

Total height = 3 feet - 4 inches

Total height = 3 feet - (4/12) feet

Total height = 3 feet - 0.3333 feet

Total height = 2.6667 feet

3. Calculate the volume of water using the formula for the volume of a rectangular prism:

Volume = Length × Width × Height

Volume = 4 feet × 1.5 feet × 2.6667 feet

Volume ≈ 16 feet³ × 2.6667

Volume ≈ 42.667 feet³

So, the volume of water in the tank is approximately 42.667 cubic feet.

Which measure of center would you use to compare the populations represented by the box plots?


Which measure of variability would you use to compare the populations represented by the box plots?


Answers

Answer:

Median and Interquartile range (IQR)

Step-by-step explanation:

I did it :)

line n passes through the points (-3 -7.5) and (2 -5) tahlia determined that the equation of line n is y = 0.5x. explain the error Tahlia made while determining her equation. Be sure to include the correct equation in your explanation

Answers

Answer:

She forgot to find the y intercept add it in the equation

y = .5x-6

Step-by-step explanation:

First we need to find the slope

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

   = (-5 - -7.5)/ (2 - -3)

   =(-5 +7.5)/( 2+3)

   = 2.5/5

   = 1/2

Substitute into the slope intercept form of the equation

y= mx+b

y= .5x +b

We need to determine b by substituting a point into the equation

-5 = .5(2) +b

-5 = 1+b

Subtract 1 from each side

-5-1 = 1-1+b

-6 = b

y = .5x-6

Answer:

She forgot the y-intercept

y = 0.5x - 6

Step-by-step explanation:

y = 0.5x + c

-5 = 0.5(2) + c

c = -6

Correct equation:

y = 0.5x - 6

what is the limit of the infinite series?

Answers

Answer:

Zero

Step-by-step explanation:

There is no solution to this.

Advertisers often refer to CPM (Cost per thousand people reached) when quoting advertising rates. If a website
promises to reach 23,000 people for $1,540, what is the CPM? (Round to the nearest dollar.)
a) $67
b) $108
c) $150
d) $185

Answers

Answer:

$67

Step-by-step explanation:

There are 23 thousand clicks, so as it pays per thousand you need to divide $1 540 by 23, which results in 66.9.... reacurring which when rounded is (a) for $67.



What is the general form of the equation of the line shown?




y - 2 = 0

y + 2 = 0

x - 2 = 0


Answers

Answer:

General form of the equation of the line:  y-2 = 0

Step-by-step explanation:

The general form of the equation is given by:

y = mx +b where m is the slope and b is the y-intercept.

y-intercepts of the line is the value of y at the point where the line crosses the y-axis(i.e x= 0)

From the given figure;

we can see that the line crosses the y-axis at y =2  and also here the slope is , m= 0

therefore, by definition of y-intercepts

y-intercept (b) = 2

Therefore, the equation of line as shoen in figure is:

y = (0)x + 2

or

y = 2

y-2 = 0

Therefore, the general form of the equation line as shown in the figure is:

y-2 =0

A 2D image of a 3D figure is most commonly know as what?

Answers

Answer:

net

Step-by-step explanation:

A two-dimensional shape has only two measurements and a three-dimensional shape has three measurements.

For example square, the triangle are two-dimensional shapes and cube, prism are three-dimensional shapes.

A 2 D image of a 3 D figure is most commonly know as a net.

A net is a two-dimensional pattern that can be folded to form the three-dimensional figure.

When you cut out the "net", fold it and stick it together you get a three-dimensional shape.

Subtract 8x2 + 3xy + 4y2 from 12x2 + 3xy - 5y2.
Your answer should be a polynomial in standard form.

Answers

Answer:

4x² - 9y²

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Terms/Coefficients/Degrees

Step-by-step explanation:

Step 1: Define

Set up expression

12x² + 3xy - 5y² - (8x² + 3xy + 4y²)

Step 2: Simplify

Distributive negative:                      12x² + 3xy - 5y² - 8x² - 3xy - 4y²Combine like terms (x²):                  4x² + 3xy - 5y² - 3xy - 4y²Combine like terms (xy):                  4x² - 5y² - 4y²Combine like terms (y²):                  4x² - 9y²

A boat leaves the dock and travels 5 miles due south, then 12 miles due west How far is the boat from the dock?

Answers

Answer:

13 miles

Step-by-step explanation:

This problem can be represented as a right angle triangle (shown in the diagram).

The distance of the boat from the dock is the hypotenuse of the triangle, hence, we need to find the hypotenuse of the triangle. To do this, we apply Pythagoras theorem:

[tex]hyp^2 = opp^2 + adj^2[/tex]

where opp = side opposite angle of consideration = 12 miles

adj = side adjacent angle of consideration = 5 miles

Hence:

[tex]hyp^2 = 12^2 + 5^2\\\\\\hyp^2 = 144 + 25 = 169\\\\\\hyp = \sqrt{169}\\ \\\\hyp = 13 miles[/tex]

The boat is therefore, 13 miles from the dock.

Final answer:

To find the distance of the boat from the dock after traveling due south and then due west, apply the Pythagorean theorem to calculate the hypotenuse of a right-angled triangle, resulting in 13 miles.

Explanation:

The question involves finding the distance of the boat from the dock after it has traveled in a two-segment path: 5 miles due south and 12 miles due west. This problem can be solved by using the Pythagorean theorem, which is applied in the context of a right-angled triangle formed by the southward and westward paths of the boat as its legs.

Steps to Calculate Distance:

Represent the boat's journey as a right-angled triangle with the southward and westward paths forming the two legs.

Calculate the hypotenuse of the triangle, which represents the straight-line distance between the boat and the dock.

Use the Pythagorean theorem (a² + b² = c²) to find the distance.

For the distances given (5 miles and 12 miles), the calculation would be [tex]\sqrt{5² + 12²}[/tex]= [tex]\sqrt{169}[/tex] = 13  

Therefore, the boat is 13 miles away from the dock after traveling 5 miles due south and 12 miles due west.

Jennifer set up 15 rows of chairs in the cafeteria for her school's talent competition. In the
first 10 rows, she set up 30 chairs on the left side of the middle aisle and x chairs on the right
side. In the last 5 rows, she set up 20 chairs on the left side of the middle aisle and y chairs
on the right side to make room for the sound crew.
Pick all the expressions that represent how many chairs Jennifer set up.
(300 + 10x) + (100 +5y)

30(x + 10) + 20 (y + 5)

10(30 + x) + 5 (20 + y)

x(10 + 30) + y(5 + 20)​

Answers

I believe it’s C sorry if wrong

Keio and Taylor relapse after school to train for the baseball team the ratio of the number of laps Kyle ran to the number that Taylor 2 to 3 Kyle ran six slabs how many laps did Taylor

Answers

Answer: 9 miles

Step-by-step explanation: 6 divided by 2 is 3 and 3 times 3 is 9.

Which equations are equivalent to y = two-thirds x minus 4 when written in slope-intercept form? Check all that apply.
3 x minus 2 y = 4
2 x minus 3 y = 12
Negative 4 (2 x minus 3 y) = negative 4 (12)
2 (x + 6) = 3 y
2 x minus 3 y = 4

Answers

Answer:

2 x minus 3 y = 12

Negative 4 (2 x minus 3 y) = negative 4 (12)

Step-by-step explanation:

y = two-thirds x minus 4

y = (⅔)x - 4

Multiply the entire equation by 3

3y = 2x - 12

2x - 3y = 12

Multiply both sides by -4

-4(2x - 3y) = -4(12)

Answer:

b

Step-by-step explanation:

In need of help of these math questions

Answers

Answer:

1. 4

2.  6.4

3. 10.0828313253

Explanation:

2.

15/12=1.25

8/1.25=6.4

3. ill write explanation for 3 later im  occupied those are the correct answers

problably they want you to round to nearest tenth

Can someone please help me answer this question ASAP

Answers

Answer:

B. 1

Step-by-step explanation:

3x-1=2

3x=3

x=1

The function () = 2 + 4 was replaced with ( + ) resulting in the function
() = 2 + 22. What is the value of ?

Answers

Let's evaluate explicitly [tex]f(x+k)[/tex]:

[tex]f(x)=2x+4\iff f(x+k)=2(x+k)+4=2x+2k+4[/tex]

If this must equal [tex]2x+22[/tex], we have

[tex]2x+2k+4=2x+22 \iff 2k+4=22 \iff 2k=18 \iff k=9[/tex]

Answer:

For what values of does the equation (2 + 1)^2 + 2 = 10 − 6 have two real and equal roots?

Step-by-step explanation:

For what values of does the equation (2 + 1)^2 + 2 = 10 − 6 have two real and equal roots?

please give answer ?

Answers

Answer:

M=(-8, -3.5)

Step-by-step explanation:

The midpoint formula for two points is [tex](\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]. Plugging in our numbers, you get [tex](\frac{-9-7}{2},\frac{-10+3}{2})=(-8, -3.5)[/tex]. Hope this helps!

urgent !! Convert the following equation to logarithmic or exponential form:

log subscript 49 left parenthesis 7 right parenthesis equals 1 half


Your answer:

49 to the power of 7 equals 1 half


7 to the power of 49 equals 1 half

open parentheses 1 half close parentheses to the power of 7 equals 49

49 to the power of 1 half end exponent equals 7

Answers

Answer:

The exponential form is 49 to the power of one-half equals 74th answer

Step-by-step explanation:

The exponential equation of  [tex]log_{b}(m)=n[/tex]  is [tex]b^{n}=m[/tex] , where b is the base, n is the exponent of b and m is the value of [tex]b^{n}[/tex]

Ex: If  [tex]log_{3}(81)=4[/tex] , that means b = 3 , n = 4 and m = 81, then its exponential form is [tex]3^{4}=81[/tex]

Now let us solve the question

∵ The equation is  [tex]log_{49}(7)=\frac{1}{2}[/tex]

∴ The base is 49

∴ The exponent is [tex]\frac{1}{2}[/tex]

∴ The answer is 7

- Substitute them in the form of the exponential form

The exponential form is [tex](49)^{\frac{1}{2}}=7[/tex]

The exponential form is 49 to the power of one-half equals 7

Final answer:

The given equation is log49(7) = 1/2. To convert it to exponential form, we can write it as 49^(1/2) = 7.

Explanation:

The given equation is:

log49(7) = 1/2

To convert this equation to exponential form, we need to remember that logarithms and exponentials are inverse functions. Therefore, we can write the equation as:

491/2 = 7

Hence, the exponential form of the given equation is 49 raised to the power of 1/2 equals 7.

A box contains 400 black pens and 50 red pens. Jose said the sum of the probability that a randomly selected pen will not be black and the probability that the pen will not be red is 1, P(not black) + P(not red) = 1. Do you agree with him? Complete the explanation to answer the question.


I (disagree/agree) with Jose that the sum of the probability that a randomly selected pen will not be black and the probability that the pen will not be red is 1.

Answers

Answer:

I agree with Jose that the sum of the probability that a randomly selected pen will not be black and the probability that the pen will not be red is 1.

Step-by-step explanation:

If we sum the probability of not black and probability of not red, we will get 1.

The probability of not black means probability of red i.e 50/450

The probability of not red means probability of black i.e 400/450.

When we add the probability, we get 1.

50/450 + 400/450 = 450/450 = 1

Invariably, the statement is same as finding probability of black and probability of red; just that the value are interchanged.

Select the correct description and/or example for each rigid transformation

Answers

Answer:

      1.reflection

     2. translation

     3. rotation

     4. rotation

      5. reflection

Step-by-step explanation:

Two lines are perpendicular if they cross a 45° angle true or false​

Answers

Answer: False

Step-by-step explanation:

Find the volume to the nearest hundredth using 3.14 instead of pi.

Answers

Answer:

48π ≈ 150.72

Step-by-step explanation:

The volume formula is V = 1/3Bh

The base area formula would be πr²

Since 8 is the diameter, 4 would be the radius

Now plug that in, π (4²) = 16π

Now multiply that by the height, 9, and get 144π

Multiply again by 1/3 and you'll get 48π

Answer:

150.72 ft^3

Step-by-step explanation:

The volume of a cone is

V = 1/3 pi r^2 h

We need to get the radius

r = d/2 = 8/2 =4

V = 1/3 (3.14) (4)^2 *9

V = 1/3 (3.14) 16 *9

V =150.72

Rounding to the nearest hundredth

V = 150.72

Other Questions
The geological era about which we have the least information Thomas wants to talk to Ricky about his behavior, but first practices different approaches with his coworkers. Which word choice should Thomas use to make Ricky feel like he is a decent boss, while also addressing Ricky's character?A)Ricky is the boss at this company, and he is an angel. Also, he is kind, loving, and always willing to help people out, never expecting anything in return.B)Ricky is our boss, and he is a real monster sometimes. He is often abrupt, unkind, cheap, and mean. But he will do anything to anyone to make a name for himself.C)Ricky is the boss at the company we work for, and he is a real tyrant. He is rude, nasty, cheap, mean, and he will do anything to anyone to make those around him miserable.D)Ricky is the boss at this company, and he is a frugal go-getter. Although he is quite blunt, he is also persistent and willing to do anything to help make the company successful. In 2016, the mean score on the AP Art History exam was 3.8, with a standard deviation of 1.2. The mean score on the AP English exam was a 2.9, with a standard deviation of 1.7. What is the combined mean and standard deviation for these exams? A.) Mean, 0.9; standard deviation, 0.2 B.) Mean, 3.35; standard deviation, 2.9 C.) Mean, 3.35; standard deviation, 1.45 D.) Mean, 6.7; standard deviation, 2.08 E.) Mean, 6.7; standard deviation, 4.33 urgent !! Convert the following equation to logarithmic or exponential form:log subscript 49 left parenthesis 7 right parenthesis equals 1 halfYour answer:49 to the power of 7 equals 1 half7 to the power of 49 equals 1 halfopen parentheses 1 half close parentheses to the power of 7 equals 4949 to the power of 1 half end exponent equals 7 The function () = 2 + 4 was replaced with ( + ) resulting in the function() = 2 + 22. What is the value of ? why is homeostasis important to organisms A section in a contract that ensures that providers of goods and services do not encounter unreasonable financial hardship as a result of uncontrollable increases in the costs of or decreases in the availability of something required to deliver products to customers is referred to as a(n) _________. * URGENT* Need Help ASAP!!How did Tinker V. Des Moines and the passage of the Twenty-sixth Amendment empower young Americans in their anti-war protests? line n passes through the points (-3 -7.5) and (2 -5) tahlia determined that the equation of line n is y = 0.5x. explain the error Tahlia made while determining her equation. Be sure to include the correct equation in your explanation Please correct the adjectival errorsNo me gusta ir al parque con mi hermana porque ella es muy aburridos.Juego al ftbol todos los das porque es divertidos.Escucho msica en mi dormitorio porque es entretenido.La pelcula es muy creativo..El rugby es muy violenta.La natacin es relajantes. What is the equation of the line? How did the artist suggest the relentless forward movement of these peasants? The top of the lid to a small container is in the shape of a square with a side length of 6 centimeters, as shown. What is thearea of the top of the lid?Use the formula for the area of a square, A-s. Where Arepresents the area and s represents the side lengthO 12 cmO 24 cm?O 36 cm72 cm Heartburn is usually caused by the effects of gastric juice on the Which of the following is a possible delay in in-hospital care to definitive treatment for patients experiencing an acute myocardial infarction?What is the correct answer?1. Door to data2. Data to decision3. Decision to terminate treatment4. Door to vital sign exam please give answer ? A baseball player is hit with a pitch in the left upper quadrant. Initially he appears to be all right; but toward, the end of the game, he becomes nauseous and starts to vomit. He complains of pain in the left upper quadrant and also pain in his left shoulder extending down his arm. The athletic trainer palpates the abdomen and detects rigidity. within a matter of minutes, the player begins to develop shock-like symptoms.A. What should the AT suspect happened to this patient? B. How should the injury be treated? A, B, C and D are genes that are linked on the same chromosome. Given the following recombination frequencies, what is the gene order? A-B 15%, B-C 26%, C-D 30%, A-C 11%, A-D 19%, and B-D 4%. (Hint: what are recombination frequencies equivalent to?) Shelly is pessimistic about her future. Her disinterest in everything around her, together with her loss of energy and motivation, make it difficult for her to cope with even the most minor of daily events. These symptoms demonstrate which domain of depression This regression analysis examines the relationship between the number of years of formal education a person has and their annual income. According to this model, about how much more money do people who finish a 4-year college program earn each year, on average, than those with only a 2-year degree?Dependent variable is Income Variable Coefficient SE Coefficient Constant 3984.45 6600 Education 2668.45 600.1