is this correct? if not please show correct version step by step.

Is This Correct? If Not Please Show Correct Version Step By Step.

Answers

Answer 1

Step/Answer:

The mistake begins at the line 3 where distrubting 2 in the expression. line 1 and line 2 both are correct. But line 3 is wrong.

[tex]2 {x}^{2} + 2x - 2 = 2 {x}^{2} - 18 \\ 2 {x}^{2} + 2x - 2 - 2 {x}^{2} + 18 = 0 \\ 2x - 2 + 18 = 0 \\ 2x + 16 = 0 \\ 2x = - 16 \\ x = - 8[/tex]

[tex]2( {x}^{2} - 9) = (2 \times {x}^{2} ) + (2 \times ( - 9)[/tex]

From line 3, you forgot to distribute 2 in -9.


Related Questions

Suppose there are 21 students in your class. If the teacher draws 2 names at random, what is the probability that you and your best friend will be chosen?


1/20

1/105

1/210

2/21​

Answers

Answer:

2/21

Step-by-step explanation:

Probability = expected outcome/ possible outcome

2/21 is ur answer because u got 2 people outta a 20 chance of drawing that student

Plssssssssss help????????

Answers

Step-by-step explanation: Since the equation of this line is written in

slope-intercept or y = mx + b form, its slope or m is represented by the

coefficient of the x term which in this case is 8/5.

It's y-intercept or b is represented by

the constant term which in this is -5.

To graph the line, start with the y-intercept of -5.

So go down 3 units on the y-axis, plot a point at (0, -3).

From there, take your slope of 8/5, so rise 8 units

and run 5 units the right which should leave you at (5, 3).

Graph the line through those points.

Please helppp! I’ll give Brainliest!!

Answers

The answer is the top left

What do the interquartile ranges (IQRs) tell you about how the teams race? Explain your thinking.

ILL MARK BRAINLIEST PLS HELPPOP

Answers

Answer:

The medians of all three teams can show the overall skill level of the teams. For example, the medians only vary between 47 and 48. This can show that most team members have around the same experience (since they have around the same median). The red team was the best in terms of time, but they don't vary much from their opposing teams.

Step-by-step explanation:

(Can also add more references to the chart and rank the teams in term of time )

please help Maggie's brother is 3 years younger than twice her age. The sum of their ages is 30.

How old is Maggie

Answers

i’m not sure if this is correct but this is the way i would solve it.

first, make an equation with the given information

2x-3=30

Then, add three to both sides

2x=33

Finally, divide both sides by 2

x= 16.5


x represents the age of maggie so all you have to do is plug the solution into the equation to check your answer.

2(16.5)-3= 30
I think he is 33 hope this helps

find the values of z and y pls :)

Answers

Measure of z is 116°.The measure of y is 48°.Hope this helps.

a solution for y = x + 2

Answers

There is an infinite number of solutions.

Y = x + 2

You could replace Y with 4 and X with Y-2 (which is 2 in this case. 4-2=2).

The result would look like this:

4 = 2 + 2

or

Y = x + 2

Y = 4

x = 2

from the adjoining figure, find the value of x

Answers

Answer:

x = 2°

Step-by-step explanation:

x + 2x + 30 = 180°

3x + 30 = 180°

3x = 180°/30°

3x = 6°

x = 6°/3°

x = 2°

Michael reads 12 pages of a book in 18 minutes, 8 pages in 12 minutes, and 20 pages in 30 minutes. I’d this a proportional relationship? What does it represent? Write an equation to represent this situation.

Answers

Answer:

Y= 1.5x

Step-by-step explanation:

What you would do is divide all of the minutes by the amount of pages to find how long for each rate for one page. (ex. 18/12, Michael reads 1 page in 1.5 minutes. 12/8, Michael reads 1 page in 1.5 minutes. 30/20, Michael reads one page in 1.5 minutes) Therefore, yes it is proportional, and the equation is y=1.5x (there is no y intercept)

I hope this will help

Plllllllllllllllllllllllzzzzzzzzzzzz help me out I’m confused 25 points

Answers

Answer:

-4+(-2)=-6

Step-by-step explanation:

So the arrow goes from -4 to -6 so the end answer is -6 and -4-2 is -6

what is the speed of a bowling ball that travels 100 meters in 5 seconds

Answers

20 meters per second or 20 mps

A property dealer charges a commission of 2% on the first 25000 and 1.5 % on the remainder. What commission does he charge for selling a plot of land of 130000

Answers

Answer:

$2075

Step-by-step explanation:

commission = 0.02 x $25,000 = $500

The remainder = $130,000 - $25,000 = $105,000

Commission on the remainder = 0.015 x $105,000 = $1,575

Total commission = $1,575 + $500 = $2075

To make a shade of green called “Jasper Green," mix 4 quarts
of green paint with 2/3 cups of black paint.
How much green paint should be mixed with 4 cups of black
paint to make the same shade?

(Please help me before I get in trouble)

Answers

Answer: use a Calculator

Step-by-step explanation: really sorry if being mean and rude

I will mark you brainliest if you answer this

Answers

Step-by-step explanation:

For the denominator to become 100, we multiply 2 to the numerator and denominator:

23/50 = (23 * 2)/(50 * 2) = 46/100 = 46%.

Answer:

[tex] \frac{23}{50} = \frac{23 \times 2}{50 \times 2} = \frac{46}{100} = 46\%[/tex]

46% is the right answer.

A salesperson at a jeweraly store that earns 7% commission each week last week Jared sold $680 worth of jewelry how much did he make in commission how much did the jewelry store make from his sales

Answers

Given :

A salesperson at a jewelry store that earns 7% commission each week last week Jared sold $680 worth of jewelry.

To Find :

How much did he make in commission.

Solution :

Let, commission he make is C.

So, C is 7% of $680 .

[tex]C = \dfrac{680\times 7}{100}\\\\C = \$ 47.6[/tex]

Therefore, salesperson will make $47.6 commission.

. Christian made $138,000 as a Physician Assistant. Social Security tax is to a maximum income of $128,400. The Medicare tax is 1.45% and the Social Security tax rate is 6.2%. How much did Christian pay in FICA taxes?

Answers

Answer:

Total money made as a physician = $138,000

Medicare tax = 1.45% of $138,000

= 1.45/100 * $138,000 = $2001

security tax = 6.2 %of $138,000

= 6.2/100 * $138,000 = $8556

= $138,000 - ($2001 + $8556)

$138,000 - $10557

= $127,443 is paid by Christian in FICA taxes

hope it helps you

7x + 5 = 3(2x + 3) + x - 4​

Answers

Answer:

Infinite Many Solutions

0 = 0

Step-by-step explanation:

7x + 5 = 3(2x + 3) + x - 4​ (Given)

7x + 5 = 6x + 9 + x - 4 (Distributive Property Of Equality)

7x + 5 = 7x + 5 (Combine Like Terms)

0 = 0 (Subtraction Property Of Equality)

As you see it's the same thing in both sides and if you solve it gives 0 = 0 because it would cancel each other out and since 0 is equal to 0 it's infinite many solutions.

Sam went to see a movie that started at 5:05 PM.
The movie lasted 2 hours and 40 minutes.
What time did the movie end?

Answers

The Answer Is 8:30 I Hope This Helps

Which is the solution of this system of equations?
y=5x-8
3y=x+18
Answers:
x=7, y=3 x=4, y=12
x=3, y=7 x=0, y=6

Answers

Answer:y=12

Step-by-step explanation:

Answer:

y=12

Step-by-step explanation:

i hope it was helpful

which one doesn’t represent a function?

Answers

It’s 3. Each input can only go to one output and 2 goes to 2 outputs

Generate two equivalent fractions for each fraction. Use fraction tiles or number lines.
1
-
3

Answers

Remember that finding common denominators is only one of the strategies for comparing fractions

Need help please help

Answers

153.9 inches is the correct answer

Answer:

153.9 in²

Step-by-step explanation:

Using the formula: A = π r²

Where r = the radius and π is 3.14.

The radius is the diameter divided by 2.

14 divided by 2 is 7.

Plug in 7 into the formula:

A = π 7²

7² is 49.

49 times π is equal to 153.86.

Rounding this up to the nearest tenth, you'll get 153.9


1) (x2 + 5x - 36) + (x +9)

Answers

X2 +6x-27 is the answer have a nice day!!
Note: the 2 is above the X

pakisaguatn pls help me asappppppppppp
nahihirapan po ako dito
plsssss​

Answers

Answer:

Step-by-step explanation:

conversion factors:

m:cm= 1:100

dm:km= 1,000,000:1

m:mm= 1:1000

hg:dg= 1:1000

g:cg= 1:100

kg:g=1000

so we plug in:

5m=500 cm

5246dm=0.5246km

5.246m=5246mm

3.7hg=3700dg

0.37g=37cg

370kg:370000

so the word is SPEAKUP

Increase £2400 by 9%

Answers

2,400 increased by 9% is 2,616

The scale of a model train is 1 1 inch to 13.5 13.5 feet. One of the cars of the model train is 5 5 inches long. What is the length, in feet, of the actual train car?

Answers

Answer:

74.25feet

Step-by-step explanation:

Given the scale of a model train expressed as;

1in = 13.5feet

We are to express length of 5.5in in feet

5.5in = x

Divide both expressions

1/5.5 = 13.5/x

Cross multiply

1×x = 5.5× 13.5

x = 74.25feet

Hence the actual length of the car in feet is 74.25feet

PLEASE HELP!!!!!!!!!!!!!!!!

Answers

Answer:

Step 2

Step-by-step explanation:

Don't Question It

Matt weighed 60 pounds when he was 8. He now weighs 80 pounds. Find the percent of increase in weight rounded to the nearest tenth. A. 20% B.25% C.30% D.33.3%

Answers

Answer:

D.33.3%

Step-by-step explanation:

A)60×.20=12

B)60×.25=15

C)60×.3=18

D)33.3% of 60 is 19.8. 60+19.8=79.8

if you round it up,it'll equal to 80

write an equation of the line that passes through the given point with the given slope. (-1,4) m=-3

Answers

Answer:

y - 4 = -3(x + 1)

Step-by-step explanation:

Let's use the point-slope formula y - k = m(x - h):

y - 4 = -3(x + 1)

16 + 13p -- 9p
how do you do this?

Answers

16 + 13p - -9p
= 16 + 22p
Other Questions
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