Meredith solved a quadratic equation. Her work is shown below.
In which step did Meredith make an error?
2(x + 4)2 = 242
(x + 4)2 = 121 Step 1
2+4=11 Step 2
2= 7 Step 3

Answers

Answer 1

Answer:

Step 2

Step-by-step explanation:

Meredith made a fatal mistake or error in step 2;

Any quadratic problem will always have two solutions. Therefore since, we only have one solution here, it is wrong. The mistake was incurred in step 2;

  From the given problem ;

    Wrong                                                  right

    2(x + 4)² = 242

    (x + 4)² = 121     Step 1  

     x+4=11              Step 2                  x + 4  = ± 11

     x  = 7                Step 3                  x + 4  = 11 or x + 4  = -11

                                                           x  = 11- 4     or    x  = -11 - 4

                                                           x  = 7 or -15

Answer 2

Answer:

Step 2

Step-by-step explanation:


Related Questions

5/8 divided by 1 1/3 in lowest form

Answers

HOPE THIS WILL HELP U...

Answer:

15/32

Step-by-step explanation:

5/8/1 1/3

Which can also be written as 5/8÷ 1 1/3

So let's solve

5/8÷4/3

So remember that the division will change to multiplication and 4/3 will also change to 3/4

5/8×3/4

15/32

This is the lowest form it can be since the two are not divisible by the same number

So the final answer is 15/32

William is riding on a bike trail that circles the city's park. If the park has a radius of 110 yards, how long is the trail?

Answers

Answer:

220π or 690.8 yds

Step-by-step explanation:

The length of a trail is 690.8 yards

How to determine the length of the trail

The radius of the park is given as:

r = 110 yards

The length of the trail is the circumference of the park.

The circumference is calculated as:

[tex]C = 2\pi r[/tex]

So, we have:

[tex]C = 2 * 3.14 * 110[/tex]

Evaluate

[tex]C =690.8[/tex]

Hence, the length of a trail is 690.8 yards

Read more about circumference at:

https://brainly.com/question/15673093

2. Apple Strudle muffins
Makes 12 muffins
You are having 14 people for brunch and each person will eat 2 muffins. How
many muffins do you need? _ Adjust the recipe

I really need a answer right now, I have no idea how to do this please help​

Answers

Answer:

Since there are 14 people who will eat 2 muffins each, you will need to make 28 muffins. To get this many muffins you will have to multiply the recipe by 2 1/3. Multiply each ingredient by 2 1/3 to make enough muffins

Step-by-step explanation:

. Every week, 2,492 new patients are admitted to a hospital. In a year, about , ANS;
patients are admitted to this hospital.
a. 100,950 b. 1256,000 c. 140,000

Answers

Answer:

130, 000

Step-by-step explanation:

A year has 52 weeks

Weekly admissions are 2492 patients

To get annual number of patients admitted, we get the product of weekly admissions and the number of weeks in a year.

Therefore, for 1 year, the number of patients admitted will be

52*2492=129584 patients. Rounded off to the nearest thousands will be 130, 000 patients

Answer:

c 140,000

Step-by-step explanation:

One year = roughly 52 weeks

52 × 2492

129,584

Closest option is 140,000

Find the missing angle measure of each triangle.

Answers

Answer:

PLEASE MARK AS BRAINLIEST I NEED THEM TO MOVE UP A RANK PLZ

Step-by-step explanation:

1.  57+52=109 angle in a triangle is 180 degrees so 180-109=71

you answer is 71

2. 58+90=148 take away 180 =32

     your answer is 32

3. 36+26=62  180-62=18  

   your answer is 19

4.  38+25=63  180-63=17

     you answer is 17

Answer:

1.71°

2. 32°

3. 118°

4. 117°

Step-by-step explanation:

Here we use angle sum property of a triangle the sum of all the angles of a triangle is 180° always and for solving these questions this method is used

1. 57° + 52° + x = 180°

109°+ x =180°

x= 180° - 109°

x = 71°

And similarly we done in all the other questions



The table shows the number of apples and oranges sold at a grocery store over a 6 day period. Which statement is TRUE?

A) The range of oranges is 43 more than the range of apples.
B) The range of apples is 43 more than the range of oranges.
C) The range of oranges is 76 more than the range of apples.
Eliminate
D) The range of apples is 76 more than the range of oranges

Answers

Answer:

B) The range of apples is 43 more than the range of oranges.

Step-by-step explanation:

The range of Apples:

172 - 98 = 74

The range of Oranges:

96 - 65 = 31

The range of Apples is more than of Oranges in 43 Apples.

The range of apples is 43 more than the range of oranges.

What is Range of data?

The mean represents the sum of all the numbers. In an ordered list, the middle number is the median. The most frequent number is the mode. The highest number less the smallest number is the range.

By deducting the lowest value from the greatest value, the range is computed.

Given:

From the given data

Range for Apples

= Highest - lowest

= 172 - 98

= 74

and, Range for Oranges

= Highest - lowest

= 96 - 65

= 31

Thus, the range of apples is 43 more than the range of oranges.

Learn more about Range of data here:

https://brainly.com/question/20607770

#SPJ7

Solve x2 = 121. (25 points)

Answers

Answer: 11

Step-by-step explanation:

[tex]x^{2}[/tex] = 121

x = [tex]\sqrt{121}[/tex]

x = 11

Answer: 11

Step-by-step explanation:

(5 organisms that live in your house. Identify them and tell me how they interact within the environment and with each other.

Answers

List five living things in your house (people, animals, plants) and how they interact.

Example: Me, mom, dad, plant, dog. Me and my mom talk and I help her. Same with me and my dad. They both help me. All three of us water and take care of the plant. We play with the dog, feed him, and walk him. The dog sometimes plays with the leaves on the plant.

(I hope this gives you an idea)

Please factor b^2+36=0

Answers

Answer:

b=-√-36

b=+√36

Step-by-step explanation:

b^2+36=0

Substrate 36 from both sides

b^2=-36

Square root both sides

b=+or -√-36

So b=+√-36

Or b=-√-36

The quadratic equation [tex]b^2[/tex] + 36 = 0 does not factor into real numbers due to the presence of a negative constant, but it factors over the complex numbers as (b + 6i)(b - 6i).

The equation [tex]b^2[/tex] + 36 = 0 is a quadratic equation of the form a[tex]x^2[/tex] + bx + c = 0, where a is 1, b is 0, and c is 36. To factor this equation, we first need to move 36 to the other side to set the equation to zero, resulting in [tex]b^2[/tex] = -36. This equation does not factor into real numbers because the square of a real number cannot be negative.

However, we can factor it over the complex numbers as (b + 6i)(b - 6i) = 0 where i is the imaginary unit.

Question 7 (5 points)
A class of 24 students went on a picnic. They had a choice between having a turkey
sandwich or a vegetarian sandwich. Eighteen students selected turkey, and the rest
selected vegetarian. Write a ratio to compare the number of turkey sandwiches to the number of vegetarian sandwiches.
1:3
3:1
4:1
4:3

Answers

Answer:

B, 3:1

Step-by-step explanation:

18:6 is 3:1 if you divide both sides by 6

Final answer:

The correct ratio to compare the number of turkey sandwiches to vegetarian sandwiches is 3:1, with 18 students selecting turkey and 6 students selecting vegetarian sandwiches.

Explanation:

The correct ratio to compare the number of turkey sandwiches to the number of vegetarian sandwiches is 3:1.

First, determine that 18 students chose turkey sandwiches, which leaves 6 students choosing vegetarian sandwiches (24 total students - 18 turkey sandwiches).Next, calculate the ratio by dividing the number of turkey sandwiches by the number of vegetarian sandwiches, resulting in 18/6 = 3.Therefore, the ratio of turkey sandwiches to vegetarian sandwiches is 3:1.

Sofia deposited $6400 into her savings account for a period of six years. How much
simple interest did her money earn at an interest rate of 1.5%?

Answers

Answer:$576

Step-by-step explanation:

To find the simple interest on$6400 on 6yr at 1.5%

Simple interest=prt/100

I=6400×1.5×6/100

I=$576

What is the answer please help me because I have to pass my test date

Answers

Answer: The Answer is C.

Step-by-step explanation:

6/2+5

=3+5

=8

A rectangular prism has a volume of 600 cubic inches.
If the height of the prism is 5 inches and the width is 10 inches,
what is the length of the prism? Enter your answer in the box.

Answers

Answer:

The length is 12 inches.

Step-by-step explanation:

The volume of a rectangular prism is given by:

V=LBH

It was given that; the rectangular prism has a volume of 600 cubic inches.

The height of the prism is 5 inches and the width is 10 inches.

We want to find the length of the rectangular prism.

We substitute V=600, H=5,and W=10 into the formula:

600=5×10×L

600=20L

[tex] L = \frac{600}{50} [/tex]

[tex]L = 12in[/tex]

The length of the rectangular prism is 12 inches.

To find the length of a rectangular prism, we can use the formula for volume:

Volume = Length × Width × Height

We know the volume is 600 cubic inches, the height is 5 inches, and the width is 10 inches. We can rearrange the formula to solve for the length:

Length = Volume / (Width × Height)

Substitute the known values into the equation:

Length = 600 / (10 × 5)

Length = 600 / 50

Length = 12 inches

Therefore, the length of the rectangular prism is 12 inches.

Nolan drove 234 miles in 4 hours. On average, how fast did he drive in miles per
hour? Express your answer in simplest form.

Answers

Answer:

58.5 Miles

Step-by-step explanation:

234 m = 4 hrs

Divide the total amount of miles to hours

234/4 = 58.5

58.5 m = 1 hr

I hope this helped you!

Answer:

12

Step-by-step explanation:

Four sizes of scaled text are shown. Four rows of text and numbers. The first row contains a question mark followed by the phrase Website text size. The next row contains the number one followed by the phrase Website text size, but smaller than the previous row. The third row contains the number zero point nine three seven followed by the phrase Website text size, but smaller than the previous row. The fourth row contains the number zero point eight seven eight followed by the phrase Website text size, but smaller than the previous row. What is the unknown scale size? Enter your answer as a decimal in the box. Round only your final answer to the nearest thousandth.

Answers

Answer:

1.067 would be the answer your looking for in this question.

Final answer:

The unknown scale size is approximately 0.878.

Explanation:

The unknown scale size can be determined by comparing the sizes of the text in each row. We can observe that each row represents a smaller size than the previous row. The first row has a text size of 1, the second row has a smaller text size, the third row has an even smaller text size, and the fourth row has the smallest text size. Therefore, the unknown scale size is between 0.878 and 0.937.



To find the exact scale size, we can estimate the last decimal place. Since the space between the third and fourth small tick marks is divided into ten equal parts, we can estimate the hundredths place to be 3. Therefore, the unknown scale size is approximately 0.878.

A race begins with 2 1/2 miles through town, continues through the park for 2 1/3 miles, and finishes at the track after the last 1/6 mile. A volunteer is stationed every quarter mile and at the finish line to pass out cups of water and cheer on the runners. How many volunteers are needed?

Answers

Answer:

You would need 20 volunteers

Step-by-step explanation:

If you make all of the fractions have a denominator of 6 then they would all add up to 1 which would be 2+2+1 which is 5 miles. Then you multiply 5 by 4 (for ever quarter mile) and it equals 20

Answer:20 I think

Step-by-step explanation:

So you add all the miles up 2 1/2 + 2 1/3 + 1/6 = 5 miles

A volunteer is stationed every quarter (1/4)

1 mile divided into 1/4 is 4

So 5 times 4 is 20

Write the missing base.
1/9=()^2

Answers

Answer: The blank is 1/3

Step-by-step explanation: 1 squared is just 1 and 3 squared is 9. 3 squared is equal to 3 times 3. So 1/3 squared is going to be 1/9. Hope this helps!

ANSWER FAST!!! Craig's family compared cell phone plans to get the best deal. At A-Mobile, the family plan is $39 for the

first two lines and $9 for each additional line. At B-Mobile, the family plan is $29 for the first two lines and $15

for each additional line. Craig's family needs to purchase 5 cell phone lines. Which family plan should

Craig's family go with? (Step by step ex. pls too)

Answers

Company A: 39+9(x-2)
with x being the number of lines needed (this is because it is 39 for the first two and 9 for any addition lines)

Company B: 29+15(x-2)
with x being the number of lines needed.

plugging in 5 as x because he needs five lines, we get
A: 39+9(3)=66
B: 29+15(3)=74

Because Company A only charges $66 and Company B charges $74, Craig should go with Company A.

What’s the length of the arc for a circle with a radius of 6 and a central angle of 48 degrees

Answers

Answer:

5.02655 units

Step-by-step explanation:

A circle consists of 360 degrees. Thus, 48 degrees is 48/360 of a circle. This relationship transfers to the arc length. The arc length with a central angle of 48 degrees is 48/360 of the entire circle's circumference. Thus:

[tex]Arc(Length) = \frac{48}{360}* 6*2*\pi = 5.02655[/tex]

5.02655 units is your answer


6. Given the function
y=f(x), describe the
transformations and
sketch the following
function;

g(x)=2f(1/2 (x-1) )-7

Answers

Answer:

See below.

Step-by-step explanation:

The  x - 1 will  move whole graph 1 unit to the right.

The 1/2 will stretch it horizontally by a factor 2.

The 2 will  stretch it vertically by a factor 2.

The -7 translates it 7 units down.

What is the surface area of the cone? Express your answer in terms of π.b

Answers

Given:

Radius of the cone = 5 ft

Slant height of the cone = 21 ft

To find:

The surface area of the cone

Solution:

Surface area of cone formula:

[tex]SA=\pi r^{2}+\pi r l[/tex]

where r is the radius and l is the slant height.

[tex]SA=\pi \times 5^{2}+\pi \times 5 \times 21[/tex]

[tex]SA=\pi \times 25+\pi \times 105[/tex]

[tex]SA=25 \pi+ 105 \pi[/tex]

[tex]SA=130 \pi[/tex]

The surface area of the cone is 130π square feet.

The total surface area of the cone is 130π square feet.

How to Calculate the Surface Area of a Cone

The surface area of a cone can be calculated using two main components: the base and the lateral (side) surface. If the radius of the base is r and the slant height is l, the formulas for these areas become essential.

The area of the base is found using the formula for the area of a circle: πr².The lateral surface area is calculated using: πrl, where l is the slant height.

Therefore, the total surface area A of the cone is:

A = πr² + πrl


Calculate the surface area using the given values:

A =

WHAT IS X/10 /6/8/9X IT IS HARD SO HERE

Answers

Answer:

4/135

Step-by-step explanation:

X/10/6/8/9x

So let's solve

The question can also be written as

X/10×8/6×1/9x

Divide by 2 first

X/5 ×4/3×1/9x

4x/135x

Divide both by x

4/135

Which graph represents a linear function?

Answers

Answer:

a

Step-by-step explanation:

its a line

Answer:

A

Step-by-step explanation:

because it shows the line

For each of the following data sets, use your calculator to help find the interquartile range and the
population standard deviation. Show your calculation for the IQR. Round all non-integer values to the
nearest tenth.
(a) 4, 6, 8, 10, 15, 19.22, 25
(b) 3.3,4,5,5,6,6,7,7,8

Answers

Answer:

(PART A)

Range: 21

(IQR) Interquartile range: 3.22

(PART B)

Range: 4.7

(IQR) Interquartile range: 2.5

Step-by-step explanation:

For (A):

4, 6, 8, 10, 15, 9.22, 25

Median: 10

Lower Quartile(Q1): 6

Upper Quartile(Q2): 9.22

(IQR) Interquartile range: 9.22 - 6 = 3.22

Range: 25 - 4 = 21

For (B):

3.3, 4, 5, 5, 6, 6, 7, 7, 8

Median: 6

Lower Quartile (Q1): 4.5

Upper Quartile (Q2): 7

(IQR) Interquartile range: 7 - 4.5 = 2.5

Range: 8 - 3.3 = 4.7

~phew! this took me long to type, anyway hope this helps you~

-please mark me the brainliest, I would highly appreciate it-

Slingerland Ski Resort offers two Winter Specials. The "Get-Away" and the "Extended-Stay."

Slingerland Ski Resort claims that "Extended-Stay" is a better deal than the "Get-Away." The Get-Away Special

offers two nights of lodging and four meals for $270. The Extended-Stay Special offers three nights of lodging and

eight meals for $435.

Write an equation in Standard Form that represents the Get-Away Special. Let n represent the cost for a night of

lodging and let m represent the cost for a meal.

Answers

Answer:

The equation is:

2n +4m = 2.7 × 10^2

Step-by-step explanation:

Please see the attached file for explanation

what is the vertex of g(x)=1/3(x-3)2

Answers

Rewrite in vertex form and use this form to find the vertex
(
h
,
k
)
(
h
,
k
)
.
(
3
,

8
)
if the problem is meant to say g(x)= 1/3(x-3)+2, the (h,k) is (3,2).

if it’s meant to say g(x)=1/3(x-3)-2, the (h,k) is (3,-2).

it depends whether the “k” value is positive or negative, i hope this helped!

Question in the picture:)

Answers

Given:

Set A represents rational numbers.

Set B represents integers.

Set C represents whole numbers.

To find:

Which of the value represents a value that could be placed in set C.

Solution:

Rational number is ratio of two numbers which of the form [tex]\frac{p}{q}, \ q\neq0[/tex].

Integer is a set of positive and negative numbers including zero.

Integers: {..., -4, -3, -2, -1, 0, 1, 2, 3, 4, ...}

Whole numbers are positive numbers with zero.

Whole numbers: {0, 1, 2, 3, 4, ...}

Option A: -10

-10 is a integer. So that, it is placed in set B not in set C.

Therefore, it is not true.

Option B: 2.5

2.5 can be written as [tex]\frac{5}{2}[/tex]. It is a rational number.

Rational number placed in set A.

Therefore, it is not true.

Option C: [tex]\frac{1}{4}[/tex]

[tex]\frac{1}{4}[/tex] is a rational number.

Rational number placed in set A.

Therefore, it is not true.

Option D: [tex]\frac{12}{4}[/tex]

[tex]$\frac{12}{4}=3[/tex] (cancelling common factors)

3 is a whole number.

Whole numbers placed in set C.

Therefore, it is true.

Hence [tex]\frac{12}{4}[/tex] is the value that could be placed in set C.

A marble was dropped into a graduated cylinder holding a volume of 20 mL. The water level increased to 35 mL. The mass of the marble is 37.8 grams. What is the density of the marble?

Answers

Answer:

2.52 g/ml

Step-by-step explanation:

Density is defined as the mass per unit volume of a substance. Therefore,

density, d=m/v

Where d denote density, m for mass and v for volume.

The volume of marble is given by getting the difference in the reading of graduated cylinder. Since the initial reading was 20 ml and final reading 35 ml, rhen the volume is 35-20=15 ml

The mass is given as 37.8 grams.

Density is therefore 37.8 g/15ml=2.52 g/ml

Density of marble is 2.52 g/ml

Final answer:

The density of the marble is calculated by dividing its mass (37.8 grams) by its volume (15 mL), leading to a density of 2.52 g/mL.

Explanation:

The density of an object can be found by dividing its mass by its volume. In this case, the mass of the marble is 37.8 grams, and when dropped into a graduated cylinder, the water level rose from 20 mL to 35 mL. The change in water level represents the volume of the marble, which is 15 mL (35 mL - 20 mL).

To find the density, perform the following calculation: density = mass/volume. Thus, the density of the marble = 37.8 grams / 15 mL = 2.52 g/mL.

The Sum of The Angles in a Triangle please dont answer yet have to add attachemnt

Answers

Answer:

<POM=110°

I hope that's what you're looking for

Answer:

Can I have branliest please!

The measurement is 110 degrees

Step-by-step explanation:

To find there are two ways to get it

There is a rule that states to find one of the exterior angles you have to add the other two angles that are not supplementary to the exterior one.

So, you can add 40 + 70 to get 110 degrees

OR

You can find the missing angle in the triangle to get 70

Angle MON and Angle MOP are supplementary

so you can subtract 70 from 180 to get 110

Hope this helps!

Ethan went to physical education class 72 times this year. He spent 3/4 of this classes outside. How many of Ethan's physical education classes this year were held outside? 2 points Your answer

Answers

Answer:54

Step-by-step explanation:

72 classes in one year

75% spent outside

72x0.75=54

54 is correct 3/4 or 75 percent of 72 is 54
Other Questions
The charts that are helpful in making comparisons between categorical variables are a. bar charts and column charts. b. scatter charts and line charts. c. bar charts and scatter charts. d. column charts and line charts. Question 8 (1 point)The 1960's counterculture had the most lasting impact on 5. The function of the leaf cuticle is:a. photosynthesis b.gas exchangec. waterproofingd. secretion Monica, a sales consultant, will receive a performance appraisal soon. Monica's supervisor will be assessing Monica's ability to deliver products to clients according to schedule and her ability to meet customer quality requirements. Which performance standard is most likely important to Monica's employer? goal achievement strategic contribution improvement potential employee traits the rate at which people learn about a secret is directly proportional to the number of people who know the secret. If two people know the secret on day 0, and 20 people know it on day 2, how long will it take for the whole school (4000 people) to know? Which event does this excerpt foreshadow in the monkeys paw Help ASAP ! Ill mark as brainlist Line segment WX is the radius of circle X, and line segment ZY is the radius of circle Y. Points W, X, C, Y, and Z are all on line segment WZ. What is the area of circle C, which passes though points W and Z? 81Pi units squared 164Pi units squared 324Pi units squared 1296Pi units squared What is the value of y Ethanol is increasingly being used as a fuel for cars.The standard enthalpy change of formation of carbon dioxide is -393 kJmol.The standard enthalpy change of formation of water is --286 kJmol.The standard enthalpy change of formation of ethanol is -277 kJmol.What is the standard enthalpy change of combustion of ethanol? The City of Tutland issued $10 million, 6 percent, 10-year bonds at 101 to finance refurbishment of its water utility fund equipment. The bond is suance is reported in the water utility enterprise fund statement of cash flows as a. A cash flow from operating activities. b. A cash flow from noncapital financing activities. c. A cash flow from capital and related financing activities. d. A cash flow from investing activities. 2. Which of the following was NOT part of the Agricultural Revolution:a.enclosure movementb. livestock improvementsC. single crop systemd. seed drill Why was logging an important part of the colonial economy? A. American Indians needed lumber for housing. B. Great Britain needed lumber for their navy. C. Spanish settlers bought a great deal of wood. D. France made most of their goods from wood. Randy and john had known each other for many years. they had become best friends in college, where they both majored in accounting. after graduation, randy took over the family business from his father. his family had been in the grocery business for several generations. when john had difficulty finding a job, randy offered him a job in the family store. john proved to be a very capable employee. as john demonstrated his ability, randy began delegating more and more responsibility to him. after a period of time, john was doing all of the general accounting and authorization functions for checks, cash, inventories, documents, records, and bank reconciliations. (1) john was trusted completely and handled all financial functions. no one checked his work. randy decided to expand the business and opened several new stores. (2) randy was always handling the most urgent problem; crisis management is what his college professors had termed it. john How many grams of CO2 are produced from 51 g of CH4? Choose the ratio that is equivalent to this one. 1/6 A. 3/8 B.4 2/4 C. 2/6 D. 12 / 2 A park planner is designing a dog park. He wants to use a metal fence to enclose a kennel at the dog park. The vertices of the fence are shown below. The units on the coordinate plane are yards. Point A (4,-4)Point B (-4,-4)Point C (-4,3)Point D (1,3)Point E (1,-1)Point F (4,-1)The park planner wants to add a gate between points A and F. He will not put metal fencing on that side. What is the total number of yards of metal fencing that will be needed for the kennel at the dog park? Which organelle is primarily concernedwith the conversion of potential energy oforganic compounds into suitable form forimmediate use by the cell?A. mitochondriaB. centrosomesC. ribosomesD. vacuoles What were some human costs of the Vietnam War?Check all of the boxes that apply.The deaths of over a million communist soldiersPost-traumatic stress disorder in veteransStagflation in the 1970sUS expenditures of $120 billion The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known to be 0.5 minute. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes.