Mathematics High School

show that (3x+7)² -84x = (3x-7)​

Answers

Answer 1
First expand...

(3x+7)^2 = 9x^2+42x+49

Bring down -84x...

9x^2+42x+49-84x

Solve...

9x^2-42x+49

Factor...

(3x-7) (3x-7) = (3x-7)^2

Related Questions

6(1 - 6x) < 38 - 4x
What is the answer to this equation.

Answers

Answer:

x>-1

Step-by-step explanation:

Answer:

x > -1

Step-by-step explanation:

Can someone pls help me

Answers

Answer:

10

Step-by-step explanation:

Answer: its an acute angle so its 90

Step-by-step explanation:

(3i+5)+(2-6i) simplify

Answers

Answer:

(3i+5)+(2-6i)

⇒ 3i+5+2-6i

⇒3i-6i+5+2

⇒-3i+7

The simplified form of (3i+5)+(2-6i) will be -3i+7

The rectangle below has an areas of x^2+8x+15 square metres and a width of x+3 meters what expression represents the length of the rectangle

Answers

Answer: x+5 or ((x^2+8x+15)/(x+3))

Step-by-step explanation: First let's assign our variables.

x^2+8x+15 = Area

X+3 = Width

? = Length

If the equation of a=lw, then we can substitute in our variables.

a=lw

x^2+8x+15= L (x+3)

Now we must isolate L.

Divide both sides of the equation by 'x+3'

x^2+8x+15= L (x+3)

x+3                 x+3

x+5= L

How do you think statistics may at times not say something? How can a well-designed study be used to carefully say everything that is important about a population? Is it possible to do so?

Answers

Answer:

While statistics are extremely valuable, they are also notorious for being a means that people use to make false and misleading arguments. Also far too often statistics are obtained by taking a sample from a larger group and assuming the whole group has the same characteristics as the sample.

A sample provides a smaller set of the population for review, that delivers data that is useful to represent the whole population. Surveying a smaller sample, as opposed to the entire population, can save precious time for researchers and offer urgent data.

Step-by-step explanation:

Hope it is helpful.....


Which expression is equivalent to 5(8+4)
A 8(5+4)
B) 4(8+5)
C) 5(9+3)
D) 5(10+1)

Answers

c, 5(9+3)
because both answers equal to 60

Answer:

5(8+4)=60

Step-by-step explanation:

To find the answer answer each one to get 60

A. 8(5+4)=64

B. 4(8+5)=52

C. 5(9+3)=60

D. 5(10+1)=55

So that means C is correct.

Graph the solution to the following linear inequality in the coordinate plane.
2x + y > 4

Answers

Answer:

Step-by-step explanation:

Answer:

Please refer to the attachment

Hope it helps

Pls mark me as the brainliest

Thank you


4x - 3y = -3
4x + y=17
The solution is....

Answers

1. Subtract the second equation from the first and solve for y: 0 - 4y = -20 => y=5
2. Substitute y=5 into one of the equations and solve for x: 4x - 3(5) = -3 => 4x = 12 => x=3

So the solution is (x, y) = (3, 5)

Find the x and y intercepts of the graph of the linear equation 3x + 6y= 24

X intercept=

y intercept=​

Answers

Answer:

y=-0.5x+4

Step-by-step explanation:

x intercept=-0.5/1

y intercept=4



Calculate the percentage increase of an item that cost R59.99 in 2020 and R 65.99 in 2021​

Answers

Answer:

the answer is of this question R = 10

Answer:

The answer is 6%

Step-by-step explanation:

[tex]65.99 - 59.99 = \frac{6 \times 100}{100} = 6\%[/tex]

how many solutions does 8x + 7 = 8x + 7 have

Answers

Answer:

infinetly many solutions

Step-by-step explanation:

Answer:

All real numbers

Step-by-step explanation:

Since they are the same x can be any number. Making the solution all real numbers.

help please? im giving brainliest for best answer

Answers

I’m confused, what is the question?

Find the value of x
Thanks bb please explain

Answers

Answer:

x=24

Step-by-step explanation:

Hello There!

Angle E and angle D are supplementary angles meaning that the sum of the two angles equals 180

So we setup an equation

180=2x+12+5x

step 1 combine like terms

5x+2x=7x

now we have

180=7x+12

step 2 subtract 12 from each side

12-12 cancels out

180-12=168

now we have

168=7x

step 3 divide each side by 7

7x/7=x

168/7=24

we're left with~ x=24

~TheMathWiz

Answer:

......... .............. .

find area of triangle ​

Answers

8 .. 4 x 4 x 1/2 = 8 ... sorry if I’m wrong

Answer:

8 in²

Step-by-step explanation:

formula for area of a triangle is 1/2(bxh)

1/2(4x4)

1/2(16)

8

Which of the following is an example for a physical property that can be exploited for sparation?

Answers

The volume of an object

Please help answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

y = -1/2x + 1

Step-by-step explanation:

Slope-intercept form:

y = mx + b, where m - slope, b - y-intercept

We are given two points on the graph:

(0, 1) and (2, 0)

The first point gives us the y-intercept:

b = 1

Finding the slope using slope formula:

m = (y2 - y1)/(x2 - x1)m = (0 - 1)/(2 - 0) = -1/2

The formula of the line:

y = -1/2x + 1

Y'all need help here​

Answers

Answer:

A

Step-by-step explanation:

Answer:

b. 1 inch : 5 miles is sure

What is the slope of these ordered pairs (3,-4(6,1)

Answers

Answer:

The slope would be 5/3

Step-by-step explanation:

Let me know if u have to simplify it

At Putt Putt, they offer a special for unlimited mini golf. You decide to go golfing with your friends. After golfing and purchasing lots of food, you end up spending $50. In total you leave Putt Putt with $5. Let s represent the amount of money you started with.
Part 1: Write an equation involving s
Part 2: Solve for how much money you brought to Putt Putt.

Answers

Answer:

part 1: a-50=5. a=55

Step-by-step explanation:

because fifty five minus 50 is equal to 5

What is the sum of the interior angles of this pentagon?
O 900°
O 360°
O 540
O 180°

Answers

Answer:

Step-by-step explanation:

360 + 3*180 = -360 + 540 = 180

For four sides -360 + 180*4 = 360

n-2)*180

For a fifteen sided share the sum of angles = (15-2)*180 = 13*180

Answer:

180

Step-by-step explanation:

help i don’t get this

Answers

Answer:

0.42

Step-by-step explanation:

4.2 * 1/10 = 4.2/10

= 0.42

Someone please help me I’ll give out brainliest please dont answer if you don’t know

Answers

Answer:

x=2

Step-by-step explanation:

x-5=-3

x=2

Select all ratios equivalent to 12:6.
120:60
35:9
55:3
10:5
Please help I’ll do anythng

Answers

10:5 is the answer hope u get a good grade

Please HELP ME T-T Roxxane all she wanna do is party all night

Answers

Answer:

Step-by-step explanation:

{-1,0,1,2}

The tide in Port Aransas peaks every 12.2 hours. The tide ranges from 2.9 to 1.3 meters. Suppose that the low tide is at t=1, where t is the time in hours.

Amplitude:
Vertical Shift:
Period:
Phase Shift:
What direction is the phase shift?
To the nearest thousandths, determine the height of the table at 3.5 hours?

Answers

[tex]\int\limits^a_b {x} \, dx[/tex]Answer:

[tex]x^{2} \lim_{n \to \infty} a_n[/tex]

Step-by-step explanation:

heading here. mdcps-logo. Dadeschools.net. Remember Username. Please Wait... Forgot Username /Pas

Lol i need help plsplspls

Answers

Answer:

y = 15

y = -10

Step-by-step explanation:

y=-5x

y= -5(-3)

= 5 × 3 = 15

y = 15

y = -5x

y = -5(2)

y = -5 × 2

y = - (5 × 2)

5 × 2 = 10

y = -10

Math: If f(x) = 2x^2 - 5x - 15, what is f(-3)? *
O
24
42
18
3

Answers

Step-by-step explanation:

1 rst. 2 x2-5x-15 da 18 rest

What is the equation of the line that passes through the point (5, 6) and has a slope
of 3/5?

Answers

Answer:

Step-by-step explanation:

is it proportional or non proportional ​

Answers

the answer is c. okayyyyyy ty y ty ty e h a bc abjagained sjnsskemd bc dd

Answer:

Proportional

Step-by-step explanation:

It passes through (0,0) and is a completely linear line I hope this helps :))

What is the square root of -16

Answers

Answer:

The square root of -16 is 4 i

Answer:

You can't but if it was 16, not -16 it will be 4.

Step-by-step explanation:

Other Questions
What is the diameter of a circle that has a radius of 5.2 yards?** Do not put yards Trisha has $22.50 to spend at the movies. Her ticket is $11.50 , and she gets a large popcorn and soda . If the popcorn and soda each cost the same amount and she spends all her money, how much was the popcorn? Judging from the events of the late1920s and early 1930s, howimportant do you think publicconfidence is to the health of theeconomy? Explain. All of the following were reasons for immigration except What number must you add to complete the square?x2 + 16x = 3O A. 16B. 36O C. 64O D. 72 Find the percent of change from 90 to 12. 15. Consider a no-load mutual fund with $400 million in assets, 50 million in debt, and 15 million shares at the start of the year; and $500 million in assets, 40 million in debt, and 18 million shares at the end of the year. During the year investors have received income distributions of $0.50 per share, and capital gains distributions of $0.30 per share. Assuming that the fund carries no debt, and that the total expense ratio is 0.75%, what is the rate of return on the fund Which of the following sentences contains an example of parallelism?A.A happy outcome seems possible at many moments during the playRomeo and Juliet.B.Friar Lawrence is primarily a serious character, while the Nurse providescomic relief.C.Audiences laugh loudly at Shakespeares comedies, but his tragediesevoke sorrow.D.Readers associates Juliet with beauty, Mercutio with wit, and Tybalt withhostility. a student mixed a sample of urine from a person with benedict's solution and heated ,the colour changed to Orange. (b)what did the student conclude on the health status of the person boys only grade and age which statement best describes ocean floors and land surfaces?A. Both results from plates colliding or sliding past each other.B. Ocean floors are the bottom of thick plates, while land surfaces are the tops of thin, dense plates.C. Ocean floors are the tops of thin. Dense plates, while land surfaces are the tops of thick, less dense plates.D. Both result from plates spreading outward or sliding past each other.I need the answer ASAP! Place the steps of the DECIDE Model into the correct order:= Consider all of your options and possible consequences of each= Evaluate the outcome= Determine your conflict and/or situation= Identify your choice by using your values and other positive influences= Educate yourself and examine your options= Decide on the healthiest option PLZ PLZ PLZ PUT THEM IN ORDER CORRECTLY pls help been waiitng for 2 hours now.. Write an exponential equation with (1, 8) and (2,32) describe the basic functions ofreligionandtheir connections to development. 5. X is a normally distributed random variable with a mean of 8 and a standard deviation of 4. This can be written as N(8,4). The probability that X is between 1.48 and 15.56 is _____________. Write out the probability notation for this question. help plz !!! I have 6 min. PLEASE HELP MEOn a math quiz, you earn 10 points for each question answered correctly. In the equation below, x represents thenumber of questions that you answer correctly on this quiz, and y represents the total number of points you score onthis quiz. The relationship between these two variables is modeled by the equation y - 10x.What is the independent variable?A)The value of 10 in the equation.B)The total number of points scored on the exam.C)The number of questions answered correctly on the exam.D)The independent variable cannot be determined from the giveninformation what is ecosystem....... Why are scientists worried that climate change will cause these toxic algae blooms to become more frequent?