4. Explain and correct the error made by a student who simplified this expression.
–2x – 4x + 8y – y
(–2 – 4)x + (8 – 0)y
–6x + 8y

Answers

Answer 1

Answer:

I notice that the first equation has a 7x, term and the second equation has a -7x term. These terms will cancel if we add the equations together—that is, we'll eliminate the the x terms:

Step-by-step explanation:

2y+7x= -5 + 5y-7x=12


Related Questions

What is the inverse operation of a power or exponent?

Answers

Answer:

The inverse of a power function of exponent n is a nth root radical function. For example, the inverse of y = 10x^2 is y = √(x/10) (at least for positive values of x and y).

at what position on the number line is the red dot located?

Answers

Answer:

D. Square root of 18

Step-by-step explanation:

The square root of 10 is 3.16.

The square root of 12 is 3.46.

The square root of 24 is 4.90.

The square root of 18 is 4.24.

The red dot is on 4.25 so your answer is the square root of 18.

Will you please mark me brainliest?

I need help. . . . . . . . .

Answers

Answer:

61, C

Step-by-step explanation:

So, congruent means all the same. The question is just saying that 3 lines intersect at one point and form 6 angle. The 6 angles are not all the same. Given that, what is the smallest possible largest angle. Obviously, if all angles could be congruent, then, it would be 6 60° angles. However, they aren't. So, to minimize the largest angle, we can just make 1 angle 61° and another 59°. Therefore, the answer should be C which is 61° as you would have the 6 angles being:

59°, 60°, 60°, 60°, 60°, and 61°.

Select ALL the sequences of transformations that could take Figure P to Figure Q​

Answers

Answer:

a reflection then a reflection

Which equation justifies why 9 1/3 = 3 square root of 9?

Answers

Answer: answer is A

Step-by-step explanation:

The knitting club sold 40 scarves and hats at a winter festival and made $700 from the sales. They charged $18 for each scarf and $14 for each hat.



If s represents the number of scarves sold and h represents the number of hats sold, which system of equations represents the constraints of the situation?

Group of answer choices



A. s + h =40

18s +14h = 700

B. 18s +14h =40

s + h =700

C. 40s + h +700

18s + 14h = 700

D. No answer text provided.

Answers

Answer:

               A.       s + h = 40                        18s + 14h = 700

Step-by-step explanation:

club sold 40 scarves and hats so the sum of scarves and hats is 40

s + h = 40       - one of equations

They charged $18 for each scarf and $14 for each hat so:

18×s   - money made from scarves

14×h   - money made from hats

18s + 14h  - sum of money made from scarves and hats so:

18s + 14h = 700      - second of equatinons

                                       

The system of equations represents the constraints of the situation are   s + h = 40 and 18s + 14h = 700.Option A is correct.

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

It is given that, the knitting club sold 40 scarves and hats at a winter festival and made $700 from the sales. They charged $18 for each scarf and $14 for each hat.

If s represents the number of scarves sold and h represents the number of hats sold.

The system of equations is as follows,

s + h =40

18s +14h = 700

Thus,the system of equations represents the constraints of the situation are   s + h = 40 and 18s + 14h = 700.Option A is correct.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ5

what is the x and y intercept of 5x+2y=-10

Answers

Answer:

x=−2/5

y−2

Step-by-step explanation:

5x+2y=−10

Step 1: Add -2y to both sides.

5x+2y+−2y=−10+−2y

5x=−2y−10

Step 2: Divide both sides by 5.

5x

5

=

−2y−10

5

x=

−2

5

y−2

Answer: x- intercept: (-2, 0)   y- intercept:  (0,_5)

Step-by-step explanation:

The school store collected $12.00 from selling pencils and a total of $42.00 from selling pencils and pens. If pen cost $0.75 each, how many were sold?

Answers

Answer:

The answer is D

Answer is 40 pens were sold

PLS ANSWER I GIVE BRAINLIEST What is the area of the square?


19a) x= ____

19b) Area of square is ____ units²

Answers

Answer:

x = 66/7 & area = 132/7

Step-by-step explanation:

7x-9=0

x=9/7

substitute value of x in 5x-3;

5(9/7)+3=66/7

Then, a*a,

thus, 2(66/7) = 132/7

give your answer on 24 hour clock time.

Answers

Answer:

Step-by-step explanation:

Total time= 45+5+25min

                =75min or 1hr15min

Pls mark me brainliest

If two angles have the same measure, then they are right angles true or false

Answers

Answer:

False

Step-by-step explanation:

Answer: true

Step-by-step explanation:

The output of a function is 5 more than 2 times the input. Find the input when the output is 17.

Answers

Answer:

The input when the output is 17 is x=6.

Step-by-step explanation:

Functions

Assume the input is called x and the output is the function f(x). Two times the input is 2x. 5 more than that is 2x+5.

Knowing the output of the function is 5 more than 2 times the input, we can write the function as:

f(x)=2x+5

Now find the input x when the output is 17:

17=2x+5

Swap sides of the equation:

2x+5=17

Subtract 5:

2x=17-5=12

Divide by 2:

x=12/6=6

The input when the output is 17 is x=6.

Three farmers buy a total of 2,249 acres of land at an auction, Farmer Mel buys land that is 3 times as many acres as Farmer Cassius's land. Farmer Cassius buys land that is 3 times as many acres as Farmer Anne's land. How many acres of land does each farmer buy?​

Answers

Answer:

Farmer Anne's land = 173 acres

Farmer Cassius = 519 acres

Farmer Mel = 1,557 acres

Step-by-step explanation:

Total acre = 2,249

Let

Farmer Anne's land = x

Farmer Cassius = 3x

Farmer Mel = 3(3x) = 9x

x + 3x + 9x = 2,249

13x = 2,249

x = 173

Farmer Anne's land = x = 173 acres

Farmer Cassius = 3x

= 3(173)

= 519 acres

Farmer Mel = 3(3x) = 9x

= 9(173)

= 1,557 acres

Therefore,

Farmer Anne's land = 173 acres

Farmer Cassius = 519 acres

Farmer Mel = 1,557 acres

During the month of December a bus company decides to only sell daily passes. They charge 3$ dollars per pass. Describe the domain and range of the scenario above

Answers

Is there more information? I think the domain and range would both be (0,infinity)

Using function concepts, it is found that:

The domain of the scenario is: {0, 1, 2, 3, 4,...}.

The range of the scenario is: {0, 3, 6, 9, 12,...}

The domain of a function is the set that contains all possible input values.

In this problem, it is the number of passes sold per day, thus, the domain of the function is: {0, 1, 2, 3, 4,...}.

The range of a function is the set that contains all possible output values.

In this problem, it is the amount earned when x passes are sold, considering that each pass is sold for $3, the range of the function is: {0, 3, 6, 9, ...}

A similar problem is given at https://brainly.com/question/24742551

A men's shoe size is related to his foot length and can be modeled by the equations s=1.7f -7.2, where s is shoe size and fis foot length, in inches. What is the shoe size of a man whose foot measures 9 inches?​

Answers

Answer:

B. 8

Step-by-step explanation:

Given the equation, [tex] s = 1.7f - 7.2 [/tex],

where,

s = shoe size,

f = foot length,

To determine the shoe size of a man that has a foot length (f) of 9 in, substitute f = 9 into the equation.

[tex] s = 1.7f - 7.2 [/tex]

[tex] s = 1.7(9) - 7.2 [/tex] (substitution)

[tex] s = 15.3 - 7.2 [/tex]

[tex] s = 15.3 - 7.2 [/tex]

[tex] s = 8.1 [/tex]

His shoe size is approximately 8 inches

what are the 3 most important things you learned about evaluating functions​

Answers

Replace, substitute, plug in given values

Functions explain circumstances in which particular quantity and quality would be different. The important things about evaluating functions are below.

The evaluation collected data or information help to design curricula, assess the efficiency of innovative approaches, and highlight the regions of the requirement for change.Evaluation data is becoming increasingly valuable for guiding and advice.This same evaluation would be important just to measure the effectiveness of an existing program.

Learn more about evaluating functions​ here:

https://brainly.com/question/1291990


Mr. Lucas bought a new television for his game room. The one he chose was $950. He had to pay a
sales tax of 8.2%. What was the amount of sales tax he paid on the television?

Answers

He would have paid $77.90 in tax. However, the overall price ( including tax) would be $1,027.90. Hope this helps

For any two integers a and b, (a + b)² = a² + b²

Answers

Answer:

wrong

Step-by-step explanation:

(a+b)^2=(a+b)(a+b)

=a(a+b)b(a+b)

=a^2+ab+ab+b^2

=a^2+2ab+b^2

i hope it helps you

Write 0.00000000000801 in scientific notation

Answers

Answer:

10^12 times 8.01

Step-by-step explanation:

Answer: 8.01*10^12

Step-by-step explanation:

3y-27=5y+9-y
please help

Answers

Answer:

y=−36

Hope this helps

Answer:

Today: Thursday, 15 October 2020

Hour: 05.11 WIB (in Indonesia)

______________________________

3y - 27 = 5y + 9 - y

3y - 5y + y = 27 + 9

-y = 36

y = -36

which is greater 8.7 or 8.5

Answers

8.7 is greater than 8.5 because the 7 is more than the 5 and the number 5 is less. Hope this helps :)

Which of these operations is not closed for polynomials?
O A. Addition
O B. Division
O C. Multiplication

Answers

B. Division I hope this worked

A cylinder has a base diameter of 4 centimeters and a height of 4 centimeters. What is its volume in cubic centimeters, to the nearest tenths place

Answers

Answer:

50.3 cm³

Step-by-step explanation:

Use the cylinder volume formula:

V = [tex]\pi[/tex]r²h, where r is the radius and h is the height.

Since the radius is half of the diameter, and the cylinder has a diameter of 4 cm, this means the radius is 2 cm.

Plug in the radius and height into the equation:

V = [tex]\pi[/tex]r²h

V = [tex]\pi[/tex](2²)(4)

V = 16[tex]\pi[/tex]

V = 50.3 cm³

Answer:

50.3 cm³

Step-by-step explanation:

Use the cylinder volume formula:

V = r²h, where r is the radius and h is the height.

Since the radius is half of the diameter, and the cylinder has a diameter of 4 cm, this means the radius is 2 cm.

Plug in the radius and height into the equation:

V = r²h

V = (2²)(4)

V = 16

V = 50.3 cm³

value of 5/6 divided by 3/4?

Answers

Answer:

1 1/9

Step-by-step explanation:

2x^2 - 17x + 30
Factor

Answers

Answer:

(2x−5)(x−6)

Step-by-step explanation:

2x^2-12x-5x+30

2x(x-6)-5(x-6)

(2x-5)(x-6)

2x^2-17x+30 should be correct

Solve the notable products (1/7x-1/7)

Answers

The Answer is 1/7(x-1)

Which of the following is equivalent to 4x+5y=12?

Answers

Answer: Slope=−

2.000

1.600

=−0.800

x−intercept=

4

12

=3

y−intercept=

5

12

=2.40000

Step-by-step explanation:

Help ASAP PLEASE AND THANK YOU

Answers

Answer:

The first column would be (x,y)---> (x,-y)

The second column would be (x,y)---> (x+3, y-8)

The third column would be (x,y)----> (-x,-y)

Then the last column would be (x,y)---> (x-8, y-3)

If h(x) = 6x + (x-1), what is the value of h(-3)?​

Answers

Answer:

-22

Step-by-step explanation:

y=6x+(x-1)    original equation

y=6(-3) +(-3-1)   substitute x value

y= -18 + -4       simplify

y=-18-4        solve

y=-22

Are the ratios 12:20 and 4:5 equivalent?

Answers

No

12:20, devide it by 4 and you'll get

= 3:5

Thus

12:20 [tex]\red{\bold{\neq}}[/tex] 4:5

no it’s not because you have to divide by the same number so if you divided 12/3=4 and 20/3=6.7 so no it is not
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