2x + x +9 = 21
i need help

Answers

Answer 1
X=21/11 that’s how it’s works

Related Questions

For f(x) = 3x2 - 2, find F(x) =
f(x)dx

Answers

Answer: below

Step-by-step explanation: Given f(x) =kxn where k is a constant, then f'(x) = nkx(n - 1)

Can you apply this principle to this problem, Let me know if you have any further questions about this problem. Thanks.

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ldodiifqbsnzifkflxkx

What is the solution of the equation √2x-3-3=6?


A) 42
B) 39
C) 3
D) 6

Answers

Answer:

42

Step-by-step explanation:

√2x-3-3=6

√2x-3=6+3

√2x-3=9

2x-3=9^2

2x=81+3

X=84/2

X=42

So value of X is 42

please help so I can pass

Answers

your answer would be F.

10. Explain how proving two triangles congruent can help prove parts of the triangle congruent.

Answers

Answer:

if two angles r equal or sides r proportional

The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. Forty-five copies of the book weigh a total of 249 ounces.

A table titled Weight of Books showing Number of Books, Weight per book in ounces, and Total Weight in ounces. The first row shows Hard Cover, with h, 7, and 7 h. The second row shows Paperback, with 45 minus h, 5, and x. The third row shows Total, with 45, blank, and 249.
Which value could replace x in the table?

40 – h
50 – h
5(45) – h
5(45 – h)

Answers

Answer:

The Correct answer is D.) 5(45 – h)

Step-by-step explanation:

x can be replaced by 5(45 - h)

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Answer:

its d

Step-by-step explanation:

just took the quiz

need help finding the slope line through each apartment of points ​

Answers

Answer:

how are yall so smart bc im sittin over here like bruh these guys are smarter than enistain

Step-by-step explanation:

Answer:

8/-11

Step-by-step explanation:

m=y2-y1/x2-x1

16-8=8

9-20=(-11)

8/-11

hope this helps :3

if it did pls mark brainliest

The value of a variable is fixed. True or false Explain:

Answers

Answer:

False

Step-by-step explanation:

On a coordinate grid, where is the center of this circle?
x² + y² = 2
A)
(-1, -1)
B)
(0,0)
(1.1)
D)
(2, 2)

Answers

Answer:

Option B) (0,0) is the correct answer.

Step-by-step explanation:

Given equation of circle is:

[tex]x^2+y^2 = 2[/tex]

The general form of equation of circle with center at (h,k) and radius r is given by:

[tex](x-h)^2+(y-k)^2 = r^2[/tex]

The given equation of circle can also be written as:

[tex](x-0)^2+(y-0)^2 = 2[/tex]

Comparing it with the general form of equation, we get

h = 0 , k = 0

So the center is (0,0)

Hence,

Option B) (0,0) is the correct answer.

Find the number of​ real-number solutions of the equation below.
x2+7x−5=0

Answers

Answer:

12

Step-by-step explanation:

Answer:

x

=

7

69

2

,

7

+

69

2

Step-by-step explanation:

x

=

7

69

2

,

7

+

69

2

Check

Your Understanding

Marcos deposited $500 into a 2.5-year simple interest account. He wants to earn $50 interest. What interest rate must the account pay?

Answers

The account must pay a 40 percent interest rate under Marcos.

A basic interest account is what?

A loan's or deposit's initial principal serves as the foundation for simple interest.

Contrarily, compound interest is calculated based on both the principal amount and the interest that is accrued on it each period.

Simple interest is simpler to compute than compound interest because it is just applied to the principal.

based on the information provided,

500+x=200

x=200/500

x=40

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What is f(-3) for f(x)=2x^2-x+5?

A).11
B).17
C).20
D).26

Answers

Answer:

20

Step-by-step explanation:

f(x) = ((2 • 32) -  3) +  5

f(x) = ((2•32) -  3) +  5

f(x) = 20

If this was helpful, mark brainliest. Have a beautiful day!

What is the y-value of point A?

Answers

Answer: 1

The full term is (6,1)

Answer:

1

Step-by-step explanation:

Trust me on this, also can I have brainiest please?

Hope you do well! :D

plz help solve this. i need the answer asap

Answers

Answer:

6 cups per month

Step-by-step explanation:

divide 72 by 12

6cups per month divid

6
Estimate each percent.
70% of 103
(1 Point)
Enter your answer



Will make Brainlylist

Answers

Answer:72.1

103*.7=72.1

I hope this is good enough:

The graph shows a proportional relationship between the number of miles and the number of hours Marco bikes.
What equation relates the distance, y, and the time, x? Enter your answer in the box

Please, this is urgent!

Answers

Answer:

15

Step-by-step explanation:

Its pretty simple

The equation that relates the distance (y) and the time (x) is → y = 15x.

What is the general equation of a Straight line?

The general equation of a straight line is -

y = mx + c

where -

m is slope of line

c is the y - intercept

Given is a graph that shows a proportional relationship between the number of miles and the number of hours Marco bikes.

First we will find the slope of the straight line. Take two set of coordinates from the graph. We will take → (1, 15) and (2, 30).

The slope of the line can be calculated using the formula -

m = (y₂ - y₁)/(x₂ - x₁)

m =(30 - 15)(2 - 1)

m = 15

The line passes through the origin so its y - intercept (c) will be zero. So, we can write the equation as → y = 15x.

Therefore, the equation that relates the distance (y) and the time (x) is → y = 15x.

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5. Expand.
(a) 2(3x - 5y + 2)
(b)-3(4x + 5 – 2x2)
(c) 8(3a – 50+ 65)
(d) -4-3g + 2h- 7)
(e) 5041 - v + 2r2)
(f) -5(-x-y + 2)
(g) - 7(x2 - 2y2 + x)
(h) 12(a + 2b - 60 + 2)
Can someone explain how to expand these expressions

Answers

Answer:

A. 6x-10y+4

B.6x²-12x-15

C.24a+120

D.12g-8h+28

how can I find the slope to this I need help​

Answers

Answer:

Your slope is -1

Step-by-step explanation:

Find the change in x and the change in y and put it in change in y over change in x.

Δx = -1 - -2 = 1

Δy = -1 - 0 = -1

Slope = rise over run = Change in y over change in x =  Δy/Δx = -1/1

Therefore the slope is -1/1 which is written as just -1

The temperature has been dropping 2° every hour and the current temperature is -15°F how many hours ago was the temperature 0°F

Answers

Answer:

7.5 hours

Step-by-step explanation:

15÷2=7.5

hope this helps, have a good day

7th grade

Four different relationships are modeled in the tables.
Select the table that models a proportional relationship.

Answers

Answer:

the first one

Step-by-step explanation:

the equation for it is y=1.4x

This is about Desmos evidence, What does y equal?

Answers

Answer:

Uhm i think this is right

Step-by-step explanation:

y=mx+b

y=2

y=2x+2

help please only 5min left HUrryyyy

Answers

Answer:C

Step-by-step explanation:

if you go up four over two, theres a point. 4/2=2. 2x

A line has a slope of 3 and passes through the point (4, 7). What is its equation in
slope-intercept form?

Answers

Answer:

Step-by-step explanation:

y - 7 = 3(x - 4)

y - 7 = 3x - 12

y = 3x - 5

The equation of the line in slope intercept form having slope 3 and passing through the point (4, 7) is y = 3x - 5.

What is Slope?

Slope of a line is the rise over the run of the given line. It is usually denoted by m.

In other words, Slope of a line can be calculated by finding the difference of the y coordinates divided by the difference of the x coordinates where x coordinate and y coordinate of two points are given.

Equation of a line in slope intercept form is given by

y = mx + c

where, m is the slope and c is the y- intercept.

Now y-intercept is the y-coordinate of the point where x = 0 or when the line touches the Y axis.

Here, m = 3

We have a point (x, y) = (4, 7)

Substituting these values in the equation,

7 = (3 × 4) + c

7 = 12 + c

c = 7 - 12

c = -5

Substituting m = 3 and c = -5,

y = 3x - 5

Hence, the equation of the line passing through the point (4, 7) and with a slope of 3 is y = 3x - 5.

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The ticket sales for a concert started at 4:00P.M. The table shows
the linear relationship between the number of tickets remaining
and the number of hours since 4:00 P.M.
Ticket Sales
Hours Since
4P.M.
1
2
Number of
Tickets Remaining
12,000
9,000
6,000
3,000
0
3
4
5
Which function can be used to find y, the number of tickets
remaining x hours since 4:00 P.M.?
A y = 3,000x + 12,000
B y = 3,000x + 15,000
C y = -3,000x + 12,000
D y-3,000x + 15,000

Answers

AnswerA

Step-by-step explanation:I’m not sure

Pleaseee I really need help as soon as possible!!!!

Answers

Think of a strategy that works out best for you.

Marie gets paid $ 2,000 monthly and a commission of 50 dollars for each sale she makes. Write an expression that represents her salary.

Answers

Answer:

2000+(50× x)

Step-by-step explanation:

The certain salary is 2000 but we do not know how much sale where made so the amount is placed as x inwhich will be multiples by 50 then added to 2000 to get total

After an injury, Greg's doctor advises him to slowly build up to his regular workout schedule, adding a certain number of minutes to his workout time each week. According to his doctor's advice, Greg should work out for 25 minutes in week 3 and 47.5 minutes in week 6. A. For how many minutes should Greg work out in week1? In week 10? Show your work.

Answers

Answer:

j

Step-by-step explanation:

Describe the topics in this unit in your own words by explaining FIVE of the vocabulary words/phrases below. You will receive twenty points for each of the vocabulary words or phrases that are correctly used to describe the unit. The vocabulary words must be used to explain the content in this unit. Use complete sentences.

Vocabulary Words/Phrases: Midpoint Formula, Distance Formula, Slope of Parallel Lines, Perpendicular Slope, Composite Figure, Perimeter, Area, Area of a Rectangle, Area of a Triangle, Area of a Kite, Area of a Regular Polygon, Apothem, Equation of a Circle, Center of a Circle, Radius of a Circle

Answers

Answer:

Too much

Step-by-step explanation:

Too much

Please this is a test !!!!!!!!!!!!

Answers

I think it’s A or the 1st one

Good luck

rite an equation of the line with a slope of 3 and a y-intercept of 4.5.

Answers

Answer:

y = 3x+4.5

Step-by-step explanation:


help
determine the quotient of 1 and 1 over 3 divided by 3 over 5 . (2 points)​

Answers

Answer:

1/2 or  .5

Step-by-step explanation:

1/3 / 3/5=.5

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