Mathematics High School

I need to find what x

I Need To Find What X

Answers

Answer 1

Answer:

Step-by-step explanation:

Add the 21 then divide by 2

Answer 2

Answer:

x = 16, x = -7

Step-by-step explanation:

The question is;

35 * 4 = ( x - 7 ) ( x - 3 )

Combine like terms on one side;

140 = ( x - 7 ) ( x - 3 )

Distribute, remember to multiply every term with one another;

140 = [tex]x^{2}[/tex] - 3x - 7x + 21

Combine like terms;

140 = [tex]x^{2}[/tex] - 10x + 21

Inverse operations;

140 = [tex]x^{2}[/tex] - 10x + 21

-21                  -21

119 = [tex]x^{2}[/tex] - 10x

Factor;

119 = x ( x - 10 )

At this point it is fairly obvious that;

x = 16, x = -7

Note; One could have used a multitude of methods to solve this problem, one could have factored, completed the square, or used the quadratic formula, this method was simply chosen because it is easy to explain

Related Questions

A farm covers land in the shape of a trapezium. The length of the northern boundary of the farm is 265 m and length of the southern boundary is 180 m. The perpendicular distance from the northern end to the southern end is 90 m.
a Draw a diagram of the farm and find its area to the nearest square metre.
b Write your answer to part a to the nearest hectare.
c The farmer decides to purchase his neighbour's farm, which is in the shape of a rectangle but has the same area as his farm. What are possible dimensions neighbour's farm? Give your answer in metres.

Answers

Answer:

Step-by-step explanation:

Part A

Givens

b1 = 265

b2 = 180

h  = 90

Formula

Area = (b1 + b2)*h / 2

Solution

Area = (265 + 180) * 90 / 2

Area = 445 * 90 / 2

Area = 40050 / 2

Area = 20025 square meters

Part B

1 hectare = 10000 square meters

x hectare = 20025 square meters         Cross multiply

x * 10000 = 20025 * 1                             Divide by 10000

x  = 20025 / 10000

x = 2.0025

Rounded to the nearest hectare that would be 2

Part C

The best shape is a square.

That would mean that the area is given by

s^2 = 20025

sqrt(s^2) = sqrt(20025)

s = 141.51

Each side of the rectangle (square) = 141.51

d. How much of each ingredient would you need to make an identical recipe that serves 18 people?​

Answers

Say you needed 2 cups of flour, you would multiply that by 18, 2x18 = 36. So just multiply every ingredient by 18.

Which value is greater 4/5 or 70%

Answers

Answer:

4/5

Step-by-step explanation:

4/5 = .8

70% = .7

Answer:

4/5

Step-by-step explanation:

Help me solve this problem
2|m/2|-1>3

Answers

Answer:

is this even a equation

Step-by-step explanation:

Which of the following describes the transformation from Figure 1
1
to Figure 2
2
?

Answers

5 units to the right and 3 units down


ITS FOR A TESTT I NEED THE ANSWER

Answers

Answer:

I believe the answer is $1.52. hope this helps

Acil cevap lütfen hemen atarsanız sevinirim (✿^‿^)♥️♥️♥️​

Answers

Answer:

hai :D

Step-by-step explanation:

Also try D


A rectangle is 2 feet wide and 4 feet long. A second rectangle is created by increasing the length and width of the first by a scale factor of
2.5. What is the area, in square feet, of the second rectangle?

Answers

Answer:

B

Step-by-step explanation:

The airplane travels 1,650 miles in 3 hours. What is
the unit rate?

Answers

Answer:

550 miles per hour

Step-by-step explanation:

Solve by factoring: x2 – 9x + 20 = 0

A. x = - 4 and x = - 5

B. x = 4 and x = 5

C. x = 20 and x = - 9

D. x = - 4 and x = 5

Show your work​

Answers

Answer:

Answer

Given equation is:

x

2

−9x+20=0

⇒x

2

−5x−4x+20=0

⇒(x−4)(x−5)=0

⇒x=4andx=5

Answer:
B.x = 4 x=5

Expiation:
x * (x-4)-5(x-4)=0
(x-4)*(x-5)=0
x-4=0
x-5=0
x1= 4 x2= 5

A hot air balloon went from an elevation of 6,039 feet to an elevation of 3,288 feet in 42 minutes. What was its rate of descent?

Answers

Answer:

65.5 feet per second

Step-by-step explanation:

In order to calculate the rate of descent we first need to find the difference in heigh that the hot air balloon descended. We do this by subtracting the initial height from the end height like so...

6,039 - 3,288 = 2,751 ft

Now that we have the difference in height we need to divide this by 42 since that is the amount of time it took for this descent to occur.

2,751 ft / 42s = 65.5 ft/s

Finally we can see that the rate of descent was 65.5 feet per second

4. I NEED HELP ASAP!! PLEASE PUT AND ANSWER AND STEP BY STEP EQUATION!! IF YOU DON'T KNOW THE ANSWER DON'T PUT ANYTHING!!
IT'S NOT B

Write a rule for the linear function in the table.



A. f(x) = –3x – 4

B. f(x) = -1/3x - 4

C. f(x) = x – 7

D. f(x) = 3x + 4

Answers

Answer:

A. f(x) = -3x - 4

Step-by-step explanation:

Please help! I need the equation of this line.

Answers

Answer: why?

Step-by-step explanation:

The coordinates are (5,-2)

The Value of (441)2 – (440)2 is :

(i) 841 (ii) 1 (iii) 881 (iv) 0

​

Answers

The answer is (iii) 881.

Explanation:

(441)² - (440)²

= (441+440)(441-400)

= (1)(881)

= 1 • 881

= 881

Calculate the values of angles A and C of triangle ABC, where b =17.23cm,c=10.86cm and B=10 1 degree 15

Answers

Answer:

C = 38.18°;  A = 40.57°

Step-by-step explanation:

B = 101' 15"

B = 101° + (15/60) = 101 + 0.25 = 101.25°

b =17.23cm,c=10.86cm

From Sine rule :

c/ sin C = b / Sin B

10.86 / sin C = 17.23 / sin 101.25

SinC = (sin 101.25 * 10.86) / 17.23

Sin C = 10.651328 / 17.23

Sin C = 0.6181850

C = Sin^-1(0.6181850)

C = 38.183716

C = 38.18°

Sum of angles in a triangle = 180°

A +  B + C = 180°

A + 101.25° + 38.18° = 180°

A = (180 - (101.25 + 38.18))

A = 40.57°

Please answer this question CORRECTLY!!!!!

Answers

The answers are the ones in the boxes. All you had to do was substitute x for the numbers on the left.

IsMepawsxD1234567890abcdef​

Answers

IsMepawsxD1234567890abcdef​

Cos^4x csc^2x = csc^2 x sin^2 -2

Answers

Answer:

0

Step-by-step explanation:

i think im not sure the way this question is written doesn't make a lot of sense

Enter the value of n so the expression (7y + 6) + (3y – 2) is equivalent to (ny + 4),

Answers

Answer:

10

Step-by-step explanation:

Omh pls help me 6thh grade math it's do in 10 mins

Answers

Answer:

1. 42

2. d cuz it has nothing-

3. A

all im saying cuz ik u can do this

Answer:

number 1 is 52% i am  goin through them

Step-by-step explanation:

Is (9, 0) a solution to the equation y = 9? yes no​

Answers

Answer:

I'm going to say no

Step-by-step explanation:

Because y in the pair y is zero not 9.

A bag contains 4 Snickers bars and 1 Twix bar, and the outcome is drawing a Twix bar. Does the phrase that describes the probability of drawing a Twix bar change from Part A?
a: yes, because there are still only two possible outcomes.
b:No, because it is still less likely to have an outcome of drawing a Twix.
c: yes, because it is still less likely to have an outcome of drawing a Twix.
d:No, because there are still only two possible outcomes.

Answers

Answer:

C. Yes,because it is still less likely to have an outcome of drawing a Twix.

Step-by-step explanation:

What is 5/6 - 3/8

A. 1/3
B. 9/16
C. 1/12
D. 11/24

Answers

Answer:

The correct answer is D

Step-by-step explanation:

5/6=20/24. 3/8=9/24. 20/24-9/24=11/24 so D

flora has a summer job where she earns $9.50 per hour. At this company, employees get a 10% raise after working for 400 hours. If flora works 640 hours over the summer, how much money will she make?

Answers

So if she works 640 hours we need to find out how much of that gets the 10% raise
640-400=240
So 240 hours get a 10% raise
400 • $9.50= $3,800
To find out how much the raise effects it
$9.50 • 10%= $0.95 + $9.50= $10.45
So the rates for the hours over 400 are $10.45
240 • $10.45=$2,508

$2,508 + $3,800= $6,308
So she made $6,308

Complete the statement. Round to the nearest hundredth if necessary.

0.3 km ≈ ? mi

Answers

Answer:

0.186 mile rounded = 0.19

Step-by-step explanation:

the answer is 0.19

Pls, answer fast with an explanation. At a carnival, it costs $138.00 for 92 tickets. Write an equation that can be used to find the total cost (c) for any number of tickets (t) you buy.

Answers

92 tickets = $138
138/92 = 1.5
1 ticket = $1.50
1.5t = c

Some steps are on paper

Does stencil two overlap exactly with the original image? Describe what you see. After the transformations are complete, what can you say about the points that make up stencil one and the points that make up the original image ? Explain

Answers

Answer:

No, stencil two does not overlap the original pattern exactly. Not all the points on stencil two coincide with the points on the original pattern. There is a subtle difference near the boundaries of the two shapes.

Step-by-step explanation:

What is the value of X ?

Answers

Answer:

i think x = 4

Step-by-step explanation:

30/25 = 4x-4/20
25(4x-4)=30x20
100x-100=600
100x=700
x=7

Can someone plz help me!!

Answers

Answer:

145°

Step-by-step explanation:

upper left angle inside triangle is 180-137, or 43°

lower right angle inside triangle is 180-(43 + 102) or 35°

'?' measures 180 - 35 which is 145°

The figure is one-fourth of a circle.

What is the perimeter of the figure?

Use 3.14 for π.

One fourth of a circle with a radius of 11 cm.

GIVING BRAINLIEST IF YOU SOLVE IT (:

Answers

Answer:

around 39.27

Step-by-step explanation:

2*11*3.14=69.08/4=17.27+22=39.27

Other Questions
what is the 95onfidence interval of heating the area if the wattage is 1,500? All things being equal, if you reduce the wing span of an aircraft you will have moreA. Parasite DragB. Induced DragC. LiftD. Loiter time Use the method of Section 3.1 to estimate the surface energy of {111},.{200} and {220} surface planes in an fcc crystal. Express your answer in J/surface atom and in J/m2 Patient presents with difficulty breathing, headache, and dizziness. What disorder is assigned? A) Laryngitis OB) Influenza C) Sinusitis D) Pneumonia Select the correct answer. Consider this function. Which graph represents the inverse of function f? f(x)= x+4 Despite the fact that almost all physicians because of fears of triggering Reye's syndrome, 'baby' aspirin sales have remained strong. Suggest a reason. The Crash Davis Driving School has an ROE of 15.3 percent and a payout ratio of 52 percent.What is its sustainable growth rate? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)Sustainable growth rate % suppose a 2200 kg elephant is charging a hunter at a speed of 6.5 m/s. 33% Part (a) Calculate the momentum of the elephant, in kilogram meters per second Grade Summary 0% 100% Potential Submissions Attempts remaining: 18 cosO tan in cotanasin acos( atan0 acotan0sinhO coshO tanh cotanhO % per attempt) detailed view 0 Degrees O Radians Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0%-deduction per feedback. 33% Part (b) How many times larger is the elephant's momentum than the momentum of a 0.0405-kg tranquilizer dart fired at a speed of 290 m/s? - 33% Part (c) What is the momentum in kilogram meters per second, of the 85-kg hunter running at 4.95 m/s after missing the elephant? a circular loop of wire is placed in a constant uniform magnetic field. describe two ways in which a current may be induced in the wire 6.100 mL of 0.100 M copper(II) nitrate is mixed in a beaker with 500 mL of 0.0100 M sodium hydroxide. How many moles of precipitate form? a. O millimoles b. 2.5 millimoles c. 5.0 millimoles d. 10 millimoles Calculate the intrinsic enterprise value using the average of terminal values derived from the EV/EBITDA multiple and perpetual growth methods.Review Later387,294451,512485,416421,684 During prenatal development, what type of cells move to specific locations in the brain and start to become connected What is the average translational kinetic energy of nitrogen molecules at 1600 K? (k =1. 38x10-23J/K) please help me with this Question there are three files for startingWrite a program to implement extendible hashing.Specifically, replace all TODO comments with code to complete the assignment.NotesAssume the number of bits is an integer constant INT_BITS that is declared in your code.Assume the block size is an integer constant BLOCKSIZE that is declared in your codeextendible_hash.CPPusing namespace std;int ExtendHash::Directory::computeSigBits(int size){return floor(log(size) / log(2) + .5);}ExtendHash::Directory::Directory(){};ExtendHash::Directory::Directory(int size){// TODO: resize this directory to the given size.// TODO: calculate and assign the number of significant bits needed for the given size.}int ExtendHash::Directory::size(){// TODO: return the number of pointers to blocks.}void ExtendHash::Directory::resize(int size){// resize the pointers.pointers.resize(size); .....Water from the Mississippi river is an example ofA. static resource.B. a renewable natural resource.C. a nonrenewable natural resource.D. capital. Sickle-cell is a recessive disease that afflicts approximately 1/12. The frequency of ss homozygotes is 0.09. what is the frequency of Ss carriers in this population? 2pq = 2(0.09)(0.91) = 0.082 1 - q2 = 1 -0.09 -0.91 1 -4 = 0.7 2pq = 2(0.7)(0.3) - 0.42 A cannon is fired with the muzzle velocity of 180 m/s at an angle of elevation= 65a. ) what is the maximum height of the projectile reaches?b. )what is the total time aloft?c. )how far away did the projectile land?d. )where is the projectile at 15 seconds after firing? (1 point) for each of the following, solve exactly for the variable x. (a) xx33! x55!=0.4 x= equation editorequation editor (b) 1 3x 9x2 27x3 =3 All of the following are goals of genetic modification except which?A.to create less expensive foodsB.to create less harmful manufacturing processesC.to produce more nutritious foodsD.to produce smaller food products 1 Do you agree with the validity of the stereotype that todays reservation culture approves of the excessive use of intoxicants, including alcohol and drugs?2 What qualities were the most highly admired in traditional American Indian women3 Do you agree with the validity of the stereotype that todays reservation culture approves of the excessive use of intoxicants, including alcohol and drugs?