Carolyn was asked to solve the following system of equations. Her work is shown.

What error did Carolyn make? Identify her mistake and explain the error.

Carolyn Was Asked To Solve The Following System Of Equations. Her Work Is Shown.What Error Did Carolyn

Answers

Answer 1

The mistake is on the second line of her work.

She wrote -2x + 4 when it should have been -2x -4 because she multiplied -2 by 2 the 4 would be negative: -2 x 2 = -4

Then adding 4 to the 7, x would be 11

Answer 2

Answer: She’s wrong because on the second line, she should’ve put -2x-4 instead of -2x+4 . X equals 11 because if you add 4 to 7 that’s what you’ll get ,

Step-by-step explanation:


Related Questions

What is the y-intercept (b) of the line? (Use frame 5 in Jamboard to answer this question) please help!! thank you!!

Answers

(0,5) would be the y intercept, since it is the starting value, and if you were parked for 0 hours (x value) then you would still pay $5 (y int)

vivian is going to do some yard work, but she needs to leave her house at 2:00 to go to a football game. She is going to mow the lawn for 1 hour and 15 minutes, trim some bushes for 40 minutes, and put down some mulch for 25 minutes, She will also need 30 minutes to shower and get dressed. What time should she start the work so that she will be ready at 2:00?​

Answers

Answer:

11:10

Step-by-step explanation:

1h15m + 40m + 25m + 30m = 2h50m

She'd need to start 2h50m before 2:00, which would be 11:10 I think

Find the formula for this sequence: 12,36,108

Answers

Answer:

Every number is being multipled by 3. 12 times 3 = 36. 36 times 3 = 108. 108 times 3 = 324

Step-by-step explanation:


Charlie rented a moving truck. He pays for each mile traveled and a rental fee for the truck. The table below shows the amount Charlie paid

Answers

Answer:

20

Step-by-step explanation:

Name two transformations and a composite transformation that will produce the image.

Answers

Answer:

Translation. The translation transformation shifts a node from one place to another along one of the axes relative to its initial position. ...

Rotation. The rotation transformation moves the node around a specified pivot point of the scene. ...

Step-by-step explanation:

Answer:

Translation and rotation.

Thank you and please rate me as brainliest as it will help me to level up

There are 39.37 inches in 1 meter. How many inches are in 8 · 104 meters?

Answers

Step-by-step explanation:

[tex]1meter = 39.37inches \\ 8.104meters = (39.37 \times 8.104)inches \\ = 319.05448inches[/tex]

There are [tex]3.1496\cdot 10^6[/tex] inches in [tex]8\cdot 10^4[/tex] meter.

Important information:

There are 39.37 inches in 1 meter.Convert meter to inches:

Using the given information,

1 meter = 39.37 inches

Using this conversion, we get

[tex]8\cdot 10^4[/tex] meter = [tex]39.37\times (8\cdot 10^4)[/tex] inches

[tex]8\cdot 10^4[/tex] meter = [tex]39.37\times 80000[/tex] inches

[tex]8\cdot 10^4[/tex] meter = [tex]3149600[/tex] inches

[tex]8\cdot 10^4[/tex] meter = [tex]3.1496\cdot 10^6[/tex] inches

Therefore, there are [tex]3.1496\cdot 10^6[/tex] inches in [tex]8\cdot 10^4[/tex] meter.

Find out more about 'Convert meter to inches' here:

https://brainly.com/question/2284603

What is the solution to the equation 1/2 x + 3 = 2/3 x + 1​

Answers

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

[tex] \frac{1}{2} x + 3 = \frac{2}{3} x + 1 \\ [/tex]

Subtract sides 3

[tex] \frac{1}{2} x + 3 - 3 = \frac{2}{3} x + 1 - 3 \\ [/tex]

[tex] \frac{1}{2} x = \frac{2}{3} x - 2 \\ [/tex]

Multiply sides by 6

[tex]6 \times \frac{1}{2} x = 6 \times \frac{2}{3} x + 6 \times ( - 2) \\ [/tex]

[tex]3x = 4x - 12[/tex]

Subtract sides 4x

[tex] - 4x + 3x = - 4x + 4x - 12[/tex]

[tex] - x = - 12[/tex]

Negatives simplifies

[tex]x = 12[/tex]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

CHECK :

[tex] \frac{1}{2} (12) + 3 = \frac{2}{3} (12) + 1 \\ [/tex]

[tex]6 + 3 = 8 + 1[/tex]

[tex]9 = 9[/tex]

Thus the solution is correct .

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Angela’s car leaked 6 ounces of oil in 9 days what is the unit rate of the oil leak ??

Answers

angelas car leaked=6ounces

angeales car leaked in 9days = 6×9=54

Olivia wants to cut off 3 3/4inches from a piece of string. She has already cut off
2 9/16 inches from the piece of string. How much more string should she cut off?

Answers

Answer:

1 3/16 inches

Step-by-step explanation:

3 3/4 = (3+12) / 4

2 9/16 = ( 9+ 32) / 16

15 / 4 - 41/ 16 make the denominators equal

15 × 4 / 4×4 - 41/ 16

= 60/16 - 41/16

= 19/16 convert it to Fractional number

= 16 + 3 / 16 = 1 3/16

Which statements accurately describe this equation?
Check all that apply.

Answers

Answer:

The second and the last one

Step-by-step explanation:

There is no solution to the problem, meaning that nothing you plug in will make the equation equal to each other

Answer:

any input value for the variable will generate a true equation

Step-by-step explanation:

cuz the last answer will be 0x = 35

so it does not matter what value x hold cuz the answer will stay the same

Jenn's phone has a fully charged battery. With normal usage, he phone will last 16 hours. How long will her battery last if it only charged 30%?
Can you show the work please, thank you!

Answers

The correct answer is 4.8 hours

Explanation:

This mathematical problem can be solved by using the rule of three, which involves finding an unknown value by using three related values. The process is shown below:

1. It is known a fully charged battery (100% battery) lasts 16 hours. This can be represented as 100 = 16. But it is not know how much a 30% battery last; this can be represented as 30 = x.

2. Write all the values

100 = 16

30 = x

3. Cross multiply to create an equation and solve the equation

100 x = 48

x = 480 / 100

x = 4.8

i got 15 points out of 20 what is my grade

Answers

Answer:

75% (Letter grade = C)

Step-by-step explanation:

15 ÷ 20 = 0.75Multiply by 100: 0.75 × 100 = 75So, your grade was a 75% (letter grade = C)

Answer:

75%

Step-by-step explanation:

We need to find out what your grade is.

Since we know that you got 15 out of 20 points we need to find the Greatest Common Factor of these two numbers.

1.  [tex]5\left \{ {{15 / 5} \atop {20 / 5 }} \right}} = \frac{3}{4}[/tex]

Now we need to turn this fraction into a decimal.

In order to do that we need to divide our 3 by our 4.

2.  [tex]\frac{3}{4} = .75[/tex]

Finally, we need to turn this decimal into a percentage.

In order to do this we must multiply our decimal by 100.

3.  .75 * 100 = 75%

Feel free to give brainliest.

Have a great day!


Math plz help
Geometry

Answers

?????????? What are you asking cause I’m confused
????

Answer:

Okay

Step-by-step explanation:

Since it's a parallelogram, the adjacent angles on the same side is complimentary. Meaning they add up to get 180°.

So,

12x° + 8x° = 180°

20x°= 180°

x°= 180/20

x°= 9°

Hope you understand. Thank you

solve for x (19×-18) (7×+1) (10×-9)

Answers

Answer:

use a calculator and thank me lator

Step-by-step explanation:

that rhymed

Which graph is a possible graph of the points (5, -3) and
(-5, -3)?

Answers

Answer:

y=-3

I hope this is good enough:

If Big Bun won 5 out of 25 matches, what percent did he win?

Answers

Answer:

5/25*100=

1/5*100=100+5=20

12 1/2 gal= qt
can you help me plsssssss

Answers

Answer:

50 qrts

Step-by-step explanation:

12.5 gal = 4x qrts

12.5 * 4 = 50

in 1/2 a gal. there is 2qt.

so that makes a gal = 4qt.

12 x 4 =48qt plus 2qt equals 50 qt

In one school, 5/6 of the sixth graders take a foreign language. Of these students, 2/5 take French. What fraction of the sixth graders take French? If there are 150 sixth grade students, how many take French?


My sister needs help before the end of the day please help me.

The options for the 2nd question are 3, 50, 100, 150, and 200.

Answers

Answer:

[tex]50[/tex]

Step-by-step explanation:

The prorportion of students that take a foreign language is [tex]\dfrac{5}{6}[/tex]

The total number of students is 150

Number of students who take a foreign language

[tex]\dfrac{5}{6}\times 150=125[/tex]

Out of these students [tex]\dfrac{2}{5}[/tex] portion of students take French.

Number of students that take French

[tex]\dfrac{2}{5}\times 125=50[/tex]

So, number of students that take French is [tex]50[/tex].


Katrina stacked 2 blocks on top of each other. The height of the first block
was 3 2/3 inches. The height of the second block was 2 /2 inches. What was
the height of the stack of | blocks? Must convert to mixed number

Answers

Answer:3 2/3

Step-by-step explanation:3 2/3 + 2/2=3 2/3

What value makes of x makes the equation 1.25(4x-10)=7.5 true

A. 3.5
B -1
C -0.5
D 4

Answers

D.4
Distribute 1.25 to 4x and 10. Then add like terms on both side and find x.

Write and equation for this table use y=mx+b PLA ANSWER HELP FAST

Answers

Answer:

y=2/3x+19/3

Step-by-step explanation:

plug into y-y prime = m (x-x prime)

A number cube has a volume of 27 mm3. What is the length of one edge of the cube

Answers

If the volume of a cube is 27 it means that one edge is equal to the cube root of 27
3*3*3=27
Edge=3

I hope it was helpful

PLZZZZZ HELP ME WHOEVER ANSWERS FIRST I WILL MAKE BRAINLIESTTTT

Answers

Answer:

2

Step-by-step explanation:

Answer:

Step-by-step explanation:

ok i want brainly ut idk the answer jk the 1st one is 60 and idk the rest

PLEASE HELP QUICK


What is the simplified expression for the expression below?

–1(2x + 3) – 2(x – 1)
–4x + 1
–4x – 2
–4x + 2
–4x – 1

Answers

Answer:

-4x - 1

Step-by-step explanation:

i used a calculator and got that

If A in 3 days can do as much work as B in 4 days and B in 5 days can
do as much as C in 6 days, how long will required to do a piece of work
which can do in 167 days?​

Answers

Answer:

Z

Step-by-step explanation:

167 days it can be Z maybe

prove that sin²∅+cos²∅=1 ?​

Answers

Step-by-step explanation:

Let ABC be a right angled triangle where there's a right angle in B . Let the measure of the angle BAC be ∅. So,

[tex] \sin(∅) = \frac{BC}{AC} [/tex]

[tex] = > {\sin}^{2}∅ = \frac{ {BC}^{2} }{ {AC}^{2} } [/tex]

Also,

[tex] \cos(∅) = \frac{AB}{AC} [/tex]

[tex] = > { \cos}^{2}∅ = \frac{ {AB}^{2} }{ {AC}^{2} } [/tex]

Now adding the values of sin^2∅& cos^2∅,

[tex] { \sin}^{2} ∅ + { \cos}^{2} ∅ = \frac{ {BC}^{2} }{ {AC}^{2} } + \frac{ {AB}^{2} }{ {AC}^{2} } [/tex]

[tex] = > { \sin}^{2} ∅ + { \cos}^{2} ∅ = \frac{ {AB}^{2} + {BC}^{2} }{ {AC}^{2} } [/tex]

But we know that

[tex] {AC}^{2} = {AB}^{2} + {BC}^{2} [/tex] by applying Pythagorean Theorem

So ,

[tex] = > { \sin}^{2} ∅ + { \cos}^{2} ∅ = \frac{ {AC}^{2} }{ {AC}^{2} } = 1[/tex]

Write the standard form equation of the line through the given points. through (0.-4) and (-3,-2)

Answers

Answer:

The standard form of equation of the line through the given points. through (0.-4) and (-3,-2) is [tex]\frac{2}{3}x+y=-4[/tex]

Step-by-step explanation:

The standard form of equation is [tex]Ax+By=C[/tex]

Finding slope

Using the given points (0,-4) and (-3,-2) we can find slope using formula:[tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]Slope=\frac{-2-(-4)}{-3-(0)}\\Slope=\frac{-2+4}{-3} \\Slope=-\frac{2}{3}[/tex]

Finding y-intercept

Using point (0,4) and Slope=-2/3 we can find y-intercept

[tex]y=mx+b\\-4=-\frac{2}{3}(0)+b\\-4=0+b\\b=-4[/tex]

The slope intercept form of the line through the given points. through (0.-4) and (-3,-2) having slope =-2/3 and b=-4 will be:

[tex]y=mx+b\\y=-\frac{2}{3}x-4[/tex]

Now, standard form of equation will be: [tex]\frac{2}{3}x+y=-4[/tex]

So, The standard form of equation of the line through the given points. through (0.-4) and (-3,-2) is [tex]\frac{2}{3}x+y=-4[/tex]

what expression is same as (a+a+a) (b+b)​

Answers

3a+2b is same as that

HELPPP PLEASEEE !!! John draws AABD, with CD as the perpendicular bisector of AB such that AACD and ABCD are congruent to each other.
DO
Which statement can John use this figure to prove?
Every isosceles triangle is a right triangle.
The base angles of any triangle are congruent.
The points on the perpendicular bisector of a side of a triangle are equidistant from all of the vertices of the triangle.
The points on the perpendicular bisector of a side of a triangle are equidistant from the vertices of the side it bisects.

Answers

Answer:

The points on the perpendicular bisector of a side of a triangle are equidistant from the vertices of the side it bisects.

Step-by-step explanation:

It is the last option. The perpendicular bisector theorem states that if  a point lies on  the bisector of a segment it is equidistant from the endpoints.

Meaning

If a perpendicular bisector is a line of the side of the triangle , it bisects the sides forming two right angles .

The first three choices are incorrect because

1) the figure shows a triangle bisected into two triangles and option 1 tells about 1 isosceles triangle.

2) The base angles of any triangle can be different or same .

3) the three perpendicular bisectors meet at a point called the circumeter. We have 1 perpendicual bisector which is dividing the triangle into two equal triangles.

The statement that John can use the figure given to prove is that: D. The points on the perpendicular bisector (CD) of a side (AB) of a triangle (triangle ADB) are equidistant from the vertices (<A and <B) of the side it bisects.

Recall:

The perpendicular bisector theorem states that any point on a perpendicular bisector of the side of a triangle is equidistant from the two endpoints or vertices of the side the perpendicular bisector bisects.

From the triangle in the image drawn by John, it means that since CD a perpendicular bisector of side AB, it means that the distance from point D to vertex A and the distance from point D to vertex B are equal.

Therefore, the statement that John can use the figure given to prove is that: D. The points on the perpendicular bisector (CD) of a side (AB) of a triangle (triangle ADB) are equidistant from the vertices (<A and <B) of the side it bisects.

Learn more here:

https://brainly.com/question/4137998

PLS HELP!!! Triangle TUV is similar to triangle XYZ. Which of the following statements is true?
A.
The slope of UV is equal to the slope of XY.

B.
The slope of VT is equal to the slope of ZX.

C.
The slope of TU is equal to the slope of YZ.

D.
The slope of UV is equal to the slope of ZX.

Answers

Answer:

d i thing or A many.....ccr3vryn my

Answer:

please send a proper pic

Other Questions
answer only if you know please :)Cells are _____of life. All living things are made of_______ .Your whole body is made up for different kinds of cells, each with a different job to do. All of the following were reasons that led to the Constitutional Convention and the desire to change the Articles of Confederation EXCEPT A. Shay's Rebellion B. desire for a Bill of Rights C. Tax and trade problems D. weaknesses of the Articles of Confederation Explain how the Tigris and Euphrates rivers helped Mesopotamia empires. WHAT ARE THESE NOTES A force of 16 N to the west is applied to each object below. Which object willundergo the greatest change in momentum?A. A 41 kg object that is moving east at 5 m/sB. A 41 kg object that is moving east at 10 m/sC. A 44 kg object that is moving east at 10 m/sD. A 44 kg object that is moving east at 5 m/s 16 points At the end of the Civil War, most African American soldiers wereSelect the best answer from the choices provided.A .free African Americans from Louisiana and the SouthB.formerly enslaved African Americans from Louisiana and the Southc.free African Americans from Massachusetts and the NorthD.formerly enslaved African Americans from northern slave states such as Maryland and Delaware Slope is -2/5and (-15.-7) Is on the line.What is Y? what decimal is halfway between 2.7 and 2.8? What value of x makes the equation 0.2(16x 48) = -0.4(x 3) true? Wat is the meaning of Sharpener by cavetown. Correct one gets a brainliest. The Indian conflicts led to well-organized ______ in every colony. evaluate each expression if m equals 3 and n equals 7, 3mn is? Kyasis travels at 55mph. How many miles will she travel in 4 hours? Come up with your own team sports game and make your own rules and regulation. Compare and contrast the landscapes of ancient Greece and Italy People unhappy with decisions made by Georgias lower courts can take their cases to a probate court. a superior court. a court of appeals. the US Supreme Court. Complete the following paragraph pertaining to urban legends about George Washington. According to legends, when George Washington was six years old, he received a hatchet. He used it to cut down a tree that his father loved. Another legend states that George Washington once threw a across the Potomac River. Which lines or segments are parallel? Justify your answers Fill in the blank.x 3 x 4 = 84 Which statement about the two stories in The People Could Fly is true?A. The nonfictional text focuses on the feelings of many people, whereas the fictional text focuses on only one person.B. The nonfictional text describes the real dangers of escaping from slavery, whereas the fictional text uses fantasy.C. The nonfictional text describes imaginary people and events, whereas the fictional text uses accurate historical details.D. The nonfictional text shows how easy it was to escape slavery, whereas the fictional text shows that it was difficult.