Mathematics Middle School

Describe and correct the error in solving the system of linear equations.
5 + 2y = 9
3x - 2y = -1
2x = 10
x = 5

Answers

Answer 1

Answer:

The second equation is incorrect!

Step-by-step explanation:

Let's break this down line by line:

y=2

x=5

1) 5 + 2y = 9  this equation is basically 5 + (2x2) = 9 meaning that y equals 2. This equation is correct!

2) 3x - 2y = -1 becomes (3x5) - (2x2) = which also basically becomes 15 - 4 which in reality equals 11. This means the equation on the second line is incorrect! Because  3x - 2y = -1 is incorrect and it is actually 3x - 2y = 11

3) 2x = 10 is correct because x=5 meaning that this equation would be       2 x 5 = 10!

Related Questions

UHHHHHHHHHHHH THIS IS EASY MATH WORK BUT I ONLY HAVE 2 BRAINCELLS THAT ARE SLOW SO JSJSJJSJJSJ HELP.

Answers

Answer:

1,708

My browser has a tool for solving the area of trapezoids that I used. Hope this helps!

1708 is than answer

can u help me plssssssssssss

Answers

Regroup terms:
y - 2/9 ≤ 5/9

Add 2/9 to both sides:
y ≤ 5/9 + 2/9

Simplify 5/9 + 2/9 to 7/9:
y ≤ 7/9

y - 2/9 ≤ 5/9

y ≤ 5/9 + 2/9

y ≤ 7/9

Step-by-step explanation:

pls help!!! ill give a brainliest

Answers

Answer:

--6+36m

Step-by-step explanation:

Step-by-step explanation:

the answer is 36m-6 .the process is shown in the picture

Which number is in the solution set of the inequality x < 15?
A)
12
B)
18
C)
21
D)
24

Answers

Answer:

A) 12

Step-by-step explanation:

As 12 is less then 15..Simple:)

50 POINTS!!!!!!!!!
Bethany is making trail mix with 3 cups of raisins for every 2 cups of peanuts. Which table represents this proportional relationship? A 2-column table with 3 rows. Column 1 is labeled Peanuts (x) with entries 3, 12, 16. Column 2 is labeled Raisins (y) with entries 2, 8, 12. A 2-column table with 3 rows. Column 1 is labeled Peanuts (x) with entries 2, 3, 6. Column 2 is labeled Raisins (y) with entries 8, 12, 24. A 2-column table with 3 rows. Column 1 is labeled Peanuts (x) with entries 3, 8, 12. Column 2 is labeled Raisins (y) with entries 2, 16, 24. A 2-column table with 3 rows. Column 1 is labeled Peanuts (x) with entries 2, 8, 12. Column 2 is labeled Raisins (y) with entries 3, 12, 18.

Answers

Answer:

x=raisin

y=peanuts

Step-by-step explanation:

x 3 6 9 12 18

y 2 4 6 8 10

Answer:

D

Step-by-step explanation:

Pls, HELP IF U DONT KNOW THE ANSWER THEN DONT RESPOND, I WILL GIVE BRAINLESS IF CORRECT.

Answers

Answer:

The answer is 0.23

Step-by-step explanation:

Hope this helps.

Pls tell me if Im not correct.

Answer:

Area of Shaded Region ≈ 0.23 cm^2

Step-by-step explanation:

Simple Question.

The diameter of the circle is 0.4 m, so the radius = 0.4/2 = 0.2 m.

The area of the circle = πr^2 = π(0.2)^2 = 0.04π

The area of the rectangle = 0.9*0.4 = 0.36

The area of the shaded region = 0.36 - 0.04π (π => 3.14) = 0.36 - 0.1256 = 0.2344 ≈ 0.23 cm^2

Is the area of the shaded rectangle 6(2−m) or 6(m−2)?
Explain how you know.

Answers

Answer:

6(2-m)

Step-by-step explanation:

the m could not be times only two so the answer would have been 12-m no matter what you don't add or subtract or times the letter because unless if the number had the same letter!

Hope this helps!! if it doesnt i apalogize!! god bless!! - Natalia

Answer:

6(m-2) because you start from 6--->  then M--->  then 2

Step-by-step explanation:

If this doesn't help here is a step by step

Find the area of the shaded region: How to find the area of shaded region of a rectangle within another rectangle? Step 1: Find the area of the larger shape and the smaller shape. Step 2: Subtract the areas. Step 3: Write the units. How to find the area of a shaded region of a circle with an inscribed triangle?

Rose’s grandmother is 89 years old. She can knit mittens somewhere between 13 and 16 hours. If she wants to knit 36 mittens for the students at her church, about how long would it take her? for 15 points

Answers

if it takes that long to make one pair, then i’d say maybe 468 hours to make all 36 pairs
Answer : around 487
( not 100%)


Explanation :
16times 36

Which is equal 576
And the grandmother is 89 so u subtract it and got 487

Write the equations of the graphs below. I will give 5 points if correct​

Answers

Answer:

b or g

Step-by-step explanation:

because u shade it and read it

A. 4x - 1 = y
B. -2/3x + 2 = y
C. y = -1
D. x + 2 = y
E. -4x - 3 = y
F. I cant tell what it is
G. x + 5 = y
H. x = 2

Angle 3 is 65 degrees. Identify all the other angles that measure 65 degrees

Answers

Answer:

angle 2 angle 7 and angle 6 measures 65° also

angle 2,6,7 are also 65 degrees

Does anyone know this?

Answers

Answer:

1 circifurence 6 18.850 area in squre 28.270

2 Circumference 37.70  Area in Square Inches 144.000

3 circumference 6.283          area in square inches   3.142

4 circumference   21.990                  area in squre inches 38.480

Pls help it is due today

Answers

Answer:

D, (45,22)

Step-by-step explanation:

Just read the graph, the point next to x 50 on the left is those coordiantes

Agreed with the person above me

Calculate the average velocity of a dancer who moves 5 m toward the left of the stage over the course of 15 s.

Answers

Answer:

Divide the distance by the time and get average velocity in units of m/s.  The direction is to the left.

It should be 0.33 m/s

EASY 13 POINTS RIGHT HERE

10.31 as a mixed number

Answers

Answer:

Step-by-step explanation:

3 The formula to find the area of a rectangle is A = lw. If l = 6 in and w = 5 in, then what is the area of the blue portion of the rectangle? A. 11 sq in B. 22 sq in C. 15 sq in D. 30 sq in

Answers

Answer:C. 15

Step-by-step explanation:

Its 15 because the rectangle is 30 and the blue side is half of it so you would have to divide 30 by 2

30 ÷ 2 = 15

6th grade math i dont understand!!!!!!

The histogram shows the number of points scored by a basketball team for one season.

Histogram named as ALTDCPoints Scored in One SeasonALTDC. 3 games scored between 69 to 76, 6 games scored between 77 to 84, games scored between 85 to 92 and 1 game scored between 93 to 100.

According to the histogram, in what percentage of games did the team score between 77 and 92 points?
Round your answer to the nearest percent.

Answers

umm im older and I dont even understand that

The percentage of games did the team score between 77 and 92 points is 78%.

What is Percentage?

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

We have,

Total games = 3 + 6 + 8 + 1 =18

and, number of games in which points between 77 and 92.

= 6 + 8

= 14

Now, the percentage of games did the team score between 77 and 92 points

= 14/18 x 100

= 77.777%

= 78%

Learn more about Percentage here:

https://brainly.com/question/29306119

#SPJ2

I'm really bad at math so ill be posting questions a lot-

Answers

Answer is 6/5. You keep 2/5, change into x, and flip 3/1

Pls help it is due today

Answers

Answer:

576

Step-by-step explanation:

4 feet^2 = 2 feet*2 feet = 24 inch * 24 inch. 24*24 = 576.

the answer is 567 because u have to know that a rectangle is to long to short

What are the 100 digits of pi?

Answers

Answer:

why 100 when you can have 1000

3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 8214808651 3282306647 0938446095 5058223172 5359408128 4811174502 8410270193 8521105559 6446229489 5493038196 4428810975 6659334461 2847564823 3786783165 2712019091 4564856692 3460348610 4543266482 1339360726 0249141273 7245870066 0631558817 4881520920 9628292540 9171536436 7892590360 0113305305 4882046652 1384146951 9415116094 3305727036 5759591953 0921861173 8193261179 3105118548 0744623799 6274956735 1885752724 8912279381 8301194912 9833673362 4406566430 8602139494 6395224737 1907021798 6094370277 0539217176 2931767523 8467481846 7669405132 0005681271 4526356082 7785771342 7577896091 7363717872 1468440901 2249534301 4654958537 1050792279 6892589235 4201995611 2129021960 8640344181 5981362977 4771309960 5187072113 4999999837 2978049951 0597317328 1609631859 5024459455 3469083026 4252230825 3344685035 2619311881 7101000313 7838752886 5875332083 8142061717 7669147303 5982534904 2875546873 1159562863 8823537875 9375195778 1857780532 1712268066 1300192787 6611195909 2164201989

Answer:

3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679

Step-by-step explanation:

Use the original price and the markdown to find the retail price.

Original price: $80; Markdown: 20%

Answers

Answer:

$64

Step-by-step explanation:

20% of 80 = 16

$80 - $16 = $64

Answer:

$64

Step-by-step explanation:

1. Approach

Multiply the original price by the markdown, then subtract the result from the original price.

2.Find the amount by which the item was marked down

Multiply the original price by the percent by which it was marked down.

Original price * markdown

80 * 20%

*don't forget to convert the percent to a decimal by dividing the percent by 100

80 * 0.2

= 16

3. Find the new price

Subtract the amount by which the product was marked down from the original price;

original_price - markdown

80 - 16

= 64

I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would appreciate it!

Answers

How can you find width if This is 2d

A mover is loading an elevator with many identical 48-pound boxes.
The mover weighs 185 pounds. The elevator can carry at most 2000 pounds.
Write an inequality that says that the mover will not overload the elevator on a particular ride.

a. Solve your inequality and explain what the solution means.

b. Graph the solution to your inequality on a number line.

Answers

Answer:

b

Step-by-step explanation:

a) After solving inequality , we get x ≤ 37.81 which meant number of boxes must be less than or equal to 38 approximately.

b) The graph is attached below.

What are inequalities ?

When two values are compared , an inequality represents whether one is greater than, less than, or not equal to the other.

It is given that the elevator can carry at most 2000 pounds of load. The weight of mover is 185 pounds. Also a mover is loading an elevator with many identical 48-pound boxes.

a)

Let's assume that the number of boxes is x.

Then the inequality can be written as :

48 × x + 185 ≤ 2000

Solving the inequality to get the value of x :

48x ≤ 2000 - 185

48x ≤ 1815

x ≤ 38 (approximate)

It meant

b) The graph for inequality which is 48 × x + 185 ≤ 2000 or say x ≤ 38 is shown below.

Therefore , the answers are :

a) After solving inequality we get x ≤ 37.81 which meant number of boxes must be less than or equal to 38 approximately.

b) The graph is attached below.

Learn more about inequalities here :

brainly.com/question/25275758

#SPJ2

3x(x−2), when x=7

I am giving out the crown to people who gets the answer right :) !!!!!!!!!!!

Answers

Answer:

105

Step-by-step explanation:

subbing x for 7:

3*7(7-2)=21*5=105

105 right? because 3(7)((7)-2) 21(5) =105

Help me please. ASAP

Answers

Answer:

A) Neither is a solution

The student government wants to determine the theme for the eighth-grade dance. Which group would it be best to take a sample from?
student government
eighth-grade students
eighth-grade students in student government
middle school students

Answers

Eighth grade students because you want to give them the opinion and decide what THEY want

Only number 6. ‍ ‍ ‍ ‍ ‍ ‍ ‍

Answers

the answer is 6, 4 divided by 2/3 =6
if you need to show your work just multiply by the reciprocal :)

correct=brainliest
thanks and rate 5 stars

Answers

Answer: 1 is -16 and the second one is 125

Step-by-step explanation:

I said that because what you earned is what they give but when you spent you lose money.

-16 and 125 is the answers in order

I really need help. please asap and i will mark brainly if correct.

Answers

It’s false because when you put it in slope intercept form 2x+ 3y= 3 turns into 3y=-2x+0 which then turns into y=-2x+1
And 2x-3y= 0 turns into -3y= -2x+0 which then turns into y=-2x+0
Which makes this false
the answer is false!!

Pls help due today plsss

Answers

Answer:

25

Step-by-step explanation:

the answer should be 25.

What signs and symbols can be used to show multiplication?

Answers

Answer:

(x) and (•), (*)

Step-by-step explanation:

uwusisisjjskssj

Answer:

what the hell it didnt let me answer

Step-by-step explanation:

Other Questions
A particular accelerator can accelerate electrons to an energy of 32 GeV. What is the de Broglie wavelength (in m) of these electrons?____ m What fraction of a proton's diameter ~(2 x 10^-15 m) can such a particle probe? probe distance/d = A stranger goes straight to the front of a long line waiting to speak with a customer service representative at a department store. In applying the fundamental attribution error, you would most likely think Find the maximum power that this circuit can deliver to a load if the load can have any complex impedance.Express your answer to three significant figures and include the appropriate units.Find the maximum power that this circuit can deliver to a load if the load must be purely resistive.Express your answer to three significant figures and include the appropriate units. The three statements give possible reasons why an average value should be used for the solar constant.1. The Sun's output varies during its 11 year cycle.11. The Earth is in elliptical orbit around the Sun.III. The plane of the Earth's spin on its axis is tilted to the plane of its orbit about the Sun.Which are the correct reasons for using an average value for the solar constant?A. I and II onlyB. I and III onlyC. II and III onlyD. I, II and III why is city driving more difficult than driving in other environments The standard molar heat of fusion of ice is 6020 j/mol. calculate qw, and delta e for melting 1 mol of ice at 0 degrees celcius and 1 atm pressure Julie has such a remarkable relationship with julia child, despite never having met her. what did youthink of the relationship that julie built in her mind? and why does it not matter, in some sense, whenjulie finds out that julia wasn't an admirer of hers or the project? Standard Deduction. (Obj. 3) Compute each taxpayers 2020 total standard deduction.a) Bryce, age 20, is a full-time student. His parents claim him as a dependent. Bryce has interest income of $320 and wages from a part-time job of $3,800.b) Same as in Part a., except that Bryces wages are $6,500.c) Heather, age 66, is married and files separate return. Her husband also uses the standard deduction on his return.d) Juliet, age 19, is blind and claimed as a dependent by her parents. Her only income is $5,200 of taxable interest. If log 10*2=m and log 10*3 =n, find log10*24 in terms of m and na 19. which organization is setting standards for 5g devices prime factorization of 84100 for a decision tree, why the height of the tree have to be at least logn (base 2)? evaluate the telescoping series or state whether the series diverges. (if the quantity diverges, enter diverges.) = 8^1/n- 8^1/(n+1) Discuss the differences between these kinds of noise, how they are different from each other, and how you can minimize each of these types of noise in an instrument Difference between the information systems and information technology Using vector algebra, identify all of the following vectors that are equivalent to (u + v) X W. vxw-u xw uxw - vxw ux w+ vxw -w xu - W X Y wXu+wXv suppose the keys 59, 54, 44, 56, 99 are inserted into a binary search tree in this order. what is the preoder traversal of the elements after insterting 35, 55, 105 into the tree? Of the following costs related to the development of natural resources, which one is not a part of depletion cost?Question 1 options:A. Acquisition cost of the natural resource depositB. Exploration costsC. Tangible equipment costs associated with machinery used to extract the natural resourceD. Intangible development costs such as drilling costs, tunnels, and shaftsQuestion 2Fences and parking lots are reported on the balance sheet as ______ Write the name for the decimal value of the point of m ob the number line Consider the reversible elementary reaction: 2A k1 k-13B which is second order in the forward direction and third order in the reverse direction. Use the principle of detailed balance here to derive an expression for the equilibrium constant for this reaction. To do this, write down the rate of the reaction in terms of the disappearance of the reactant A. Then, assume that the reaction mixture is at equilibrium, so set the reaction rate to be equal to zero. Using this assumption, re-arrange the rate equation algebraically to obtain an expression for the equilibrium constan