Your classmate says that the solutions to the given inequality are x > -2. Look carefully at the work. Should your friend have reversed the inequality​ symbol? Explain. Then solve the inequality correctly.

Please don't send those annoying files, I'm not trying to get a virus on my laptop. Please, if you can, just write out the steps/answer(s).

Your Classmate Says That The Solutions To The Given Inequality Are X > -2. Look Carefully At The Work.

Answers

Answer 1

Answer:

x < -2 (No, he shouldn't have reversed the inequality symbol).

Step-by-step explanation:

Given the algebraic expression;

19 - 2(1 - x) < 13

Opening up the bracket, we have;

19 + (-2*1) + (-2*-x) < 13

19 + (-2) + (2x) < 13

19 - 2 + 2x < 13

17 + 2x < 13

Rearranging the equation, we have;

2x < 13 - 17

2x < -4

Dividing both sides by 2, we have;

x < -2

Hence, your friend shouldn't have reversed the inequality symbol (sign).

Note: you should only flip the inequality symbol (sign) when you're dividing by a negative number such as -2.

For example, if we had re-arranged the equation as;

17 - 13 < -2x

4 < -2x

Dividing both sides by -2, we have;

4 > x


Related Questions

I’m just confused help!

Answers

Answer:

Step-by-step explanation:

180

Given
BAI BD
mZCBD = 40 +52
m ABC = 82 - 10°
Find mZCBD:
B
D

Answers

Answer:

m∠CBD=68°

Step-by-step explanation:

BA is perpendicular to BD, meaning they form a right angle (90°)

This means m∠CBD + m∠ABC=90, or they are supplementary.

We have expressions given for these angles, so

4x+52+8x-10=90

12x+42=90

12x=48

x=4

Knowing x=4, we can substitute back into our expression for m∠CBD because that's what we're looking for.

4(4)+52=68

m∠CBD is 68°.

There are 5 blue
candies, 6 red
candies, and 9 yellow
candies. What is the
probability of
randomly picking a red
candy? Express your
answer as a percent.

Answers

Answer:

The probability of randomly picking a red candy is 1/20 and In percentage value 5%

Step-by-step explanation:

There are 5 blue candies, 6 red candies, and 9 yellow candies.

Now, Total

5 + 6 + 9 = 20 candies

Now, The probability of randomly picking a red candy is 1/20

Now, In percentage

1/20 × 100% = 5%

Thus, The probability of randomly picking a red candy is 1/20 and In percentage value 5%.

-TheUnknownScientist

Write this number in standard form.
Seven hundred nine
thousand eight hundred
thirty-one

Answers

Answer:

709,831

Step-by-step explanation:

709,831

Answer:

709831

Explanation

answer this MATH question thank you :)

Answers

Answer:

K

Step-by-step explanation:

By altering the initial height, you change the h-intercept. That will affect the maximum height and the t-intercept.

Answer: K

Answer:

post a new question so we can talk

Step-by-step explanation:

A 26 foot ladder is set against the side of a house so that it reaches up 24 feet. If Mila
grabs the ladder at its base and pulls it 12 feet farther from the house, how far up the side of the house will the ladder reach now?

Answers

Answer:

13.9

Step-by-step explanation:

13.85 feet far up the side of the house will the ladder reach now.

Given that, a 26 feet ladder is set against the side of a house so that it reaches up 24 feet.

What is heights and distances in trigonometry?

In mathematics, you can calculate the height of an object using the distance and angles. Here distance is the horizontal distance between the object and the angle is the angle above the horizontal of the top of the object, which gives the height of the object.

Let the distance between base of house to foot of the ladder be x.

Using Pythagoras theorem 26²=24²+x²

⇒ 676 = 576 + x²

⇒ x² = 100

⇒ x =10 feet

Mila grabs the ladder at its base and pulls it 12 feet farther from the house.

Now, the distance between base of house to foot of the ladder = x+12

= 10+12 = 22 feet.

So, up the side of the house the ladder reach = 24-h

Then, 26² = (24-h)²+22²

⇒ 676 = (24-h)²+484

⇒ (24-h)² = 192

⇒ (24-h) = √192

⇒ (24-h) = 13.85

⇒ h = 24-13.85

⇒ h = 10.15 feet

Therefore, 13.85 feet far up the side of the house will the ladder reach now.

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Diego, Elena, and Andre participated in a walk-a-thon to raise money for cancer research. They each walked at a constant rate, but their rates were different. 3. a. How fast was Diego walking in miles per hour?

Answers

Answer:

3 miles per hour

Step-by-step explanation:

It is given that Diego and his friends took part in a walk a thon to raise money for cancer research.

From the table, it is given that:

Time took by Diego in hours = 2 hours

Miles walked by Diego in miles = 6 miles

Therefore, Diego is walking with a speed of = [tex]$\frac{6}{2}$[/tex]

                                                                          = 3 miles per hour

What is the volume of this cylinder?
Use 3.14 and round your answer to the nearest hundredth.
14 mm
7 mm

Answers

4300( 4308.08)

Your welcome

So all you have to do is multiply the radius by itself. So in this case 14x14=196.

So then multiply that by pi aka 3.14. So 196x3.14=615.44 then multiply that by your height in this case its 7 So 615.44x7=4308.08

just a simple question, if you guys dont mind.

Answers

B!!! :))))))))))))) !!!

solve for X.

Should be a decimal.

Answers

Hypotenuse = sqr of a2-b2

Answer : 29.83287

Convert 0.5 liters to milliliters.​

Answers

Answer:

500 millilitres

Step-by-step explanation:

I hope it will help you

Answer:

Step-by-step explanation:

1 litre = 1000 millilitres

0.5 Litre = 500 milliliters

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Answers

Answer:

D. (8,0), (4,0)

Step-by-step explanation:

they both on tha line

(2x-4)^2 please solve with steps

Answers

Answer

what is the equation equal to

Step-by-step explanation:

If thats the only thing they give it is (2x-4)(2x-4)

Answer:

4x - 16

Step-by-step explanation:

2x x 2x = 4x (2x^2)

4 x 4 = 16 (4^2)

You had to distribute that ^2.

Keep the SUBTRACTION sign.

therefore your answer is:

4x - 16

Joe bought two pizzas for 16.78 He wants to give the delivery person an 18% tip. How much money should should give the delivery person

Answers

Answer

23

Step-by-step explanation:

Answer:

$23.00

Step-by-step explanation:

-4(3x+2)-5x what is the answer to this question?

Answers

Answer:

Step-by-step explanation:

-4(3x+2)-5x

-12x - 8 - 5x

Solving like terms

-17x - 8

If you want to find the value of x then

-17x - 8 = 0

-17x = 8

x = 8/-17

Answer: -17x - 8

Step-by-step explanation:

First, we distribute the -4 into the parenthesis:

-4(3x + 2) - 5x

-12x - 8 - 5x

Now, we combine like terms:

-12x - 8 - 5x

-17x - 8

You can't simplify this expression any further because of the variable, so this is your final answer :)

Do the side lengths 9,12, and 17 form a right triangle?

Answers

Answer:

no

Step-by-step explanation:

Using the converse of Pythagoras' identity

If the square of the longest side is equal to the sum of the squares of the other 2 sides then the triangle is right.

longest side = 17 and 17² = 289

9² + 12² = 81 + 144 = 225 ≠ 289

Then the triangle is not right

brilliance for the right answer
What does 1 cc mean?
1 cubic inch
1 cubic centimeter
1 cubic feet
1 cubic liter

Answers

1cc means one cubic centimeter. I advise you to look at the letter units

1 cc (cubic centimeter) refers to a unit of volume in the metric system. It is equal to one cubic centimeter, which is equivalent to one milliliter (ml).

The abbreviation "cc" is commonly used in medical and scientific contexts to represent small volumes, especially when measuring liquids or medications.

A cubic centimeter (cc) is a unit of volume that is commonly used in the metric system. It is equivalent to a cube with edges measuring one centimeter each. The cubic centimeter is often used to measure the volume of small objects or quantities of liquids.

To better understand the size of a cubic centimeter, it can be visualized as the volume occupied by a sugar cube or a small dice. It is a relatively small unit of volume, and larger volumes are typically expressed in terms of liters or cubic meters.

To know more about cubic centimeter here

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can someone help please what is the answer?

Answers

[tex]\frac{1}{2}q = - 24\\q = - 24 * 2\\q = - 48[/tex]

Answer:

The answer is q= -48

Step-by-step explanation:

The steps to solve are:

Combine multiplied terms into a single fraction.

Next, multiply by one.

Then, eliminate common denominators.

After that, cancel multiplied terms that are in the denominator.

Finally multiply the numbers.

(2 x 10^5) x (3 x 10^4)
give your answer in standard form
(answer and you’ll get 20 points)

Answers

Answer:

6x10⁹

Step-by-step explanation:

so we regroup them

(2×3)×(10⁵×10⁴)

6×10⁵+⁴

=6×10⁹

Answer:

Below.

Step-by-step explanation:

(2 x 10^5) x (3 x 10^4)

= 2 x 3 x 10^5 x 10^4

= 6 x 10^(4+5)

= 6 x 10^9.

Find the factors of x3−7x−6

(x+3)(x+2)(x−1)
(x−3)(x+2)(x+1)
(x−4)(x−2)(x+1)
(x−6)(x−1)(x+1)

Answers

Answer:

B. (x−3)(x+2)(x+1)

Step-by-step explanation:

Possible options are 1 or 2 as each has odd number of negative coefficients.

Open parenthesis and verify:

(x+3)(x+2)(x−1) = ³ + 4x² + x - 6, false(x−3)(x+2)(x+1) = x³ - 7x - 6, true

Please help me
GEOMETRY
And please let me know how you solved it thank u!

Answers

Answer:

x = 6

Step-by-step explanation:

In the picture :) Hope that helped!

The area of a rectangle if the length is 5 more than 4 times the width, what's the algebraic expression for this question ​

Answers

A= 4w+5

Please mark brainliest

The area of a rectangle if the length is 5 more than 4 times the width, the algebraic expression for this is, A = (4b + 5) × b

What is the area?

An area is total space occupied by two-dimensional or flat surfaces. In other words we can say that it is a number of unit squares present in a closed figure. We use various units for measurement of area like, cm², m², ft², mm².

Given that,

The length is 5 units more than 4 times the width

Suppose,

length = l

width = b

So, according to given condition

l = 4b + 5

Now, the area for rectangle is

A = length × width

A = l × b

A = (4b + 5) × b

Hence, the algebraic expression is (4b + 5) × b

To learn more about Area check:

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Can someone Help please

Answers

Answer:

Answer:17 (I think)

Because if you look at the problem below Y u can see the patter 5+3=8 8+3=11 contiously adding 3 you get 17

Y is equal to 18. If you take a close look it can be seen that it is going in a sequence by 3.

Pls solve this for 80 points

Answers

Answer and Step-by-step explanation:

For this problem, b is the y-intercept.

On the graph, the line intersects the y-axis at (0, 10).

That means b is 10.

For the slope, we need to find the rise over run of the line. We see that the line goes up 2 and over 4. This simplifies to [tex]\frac{1}{2}[/tex].

That means m is [tex]\frac{1}{2}[/tex].

#teamtrees #PAW (Plant And Water)

Step-by-step explanation:

b is the y intercept

the ordered pair is 0, 10

CAN SOMEONE PLZ HELP ME ON THIS ONE

Answers

Answer:

Both are true

Step-by-step explanation: When the letter has this (') that means it parallel

aka being mirrored

Ms. Robinson has $75 in her bank account and is depositing $15
each week. Ms. LaSpina has $225 in her bank account and is
withdrawing $10 each week. How many weeks will it take for the
bank accounts to have the same amount? What will that amount
be?

Answers

Answer:

It will take 6 weeks

Step-by-step explanation:

Ms. Robinson: 75+15(6)=$160

Ms. LaSpina: 225-60 =$160

Therefore both will take 6 weeks

Part 1: How many phone numbers can be made if all the digits (that is, 10 digits) need
to be filled in and any single digit number (0-9) can be used for any digit?

Part 2: How many phone numbers can be made if the first digit must be 1, the second digit must be a number in the range 3-5, the third digit must be a number in the range
(6-9), and the last seven digits can be any single digit number 0-9?


PLZ HELP ASAP WOULD GREATLY APPRECIATE IF U R HERE TO NOT HELP DON'T BOTHER OR DON'T PUT A LINK THAT LEADS TO NOTHING THANK YOU!

Answers

Answer:

100

Step-by-step explanation:

Just do 10 times 10

Can you give the picture with the problem? Im confused on what the problem is because i dont see an equation set.

The length of a rectangle is 9 centimeters more than half
the width. Find the length if the perimeter is 60 centimeters.

Answers

Answer:

l = 16 cm

Step-by-step explanation:

Let's set the width of the rectangle as "w" and the length of the rectangle as "w/2 + 9".

The perimeter of a rectangle is calculated by adding up the value of all of its side lengths. Therefore, we can find the perimeter using 2l + 2w = P.

We can substitute 60 for P and w/2 + 9 for l.

2(w/2 + 9) + 2w = 602w/2 + 18 + 2w = 60 w + 18 + 2w = 603w + 18 = 603w = 42w = 14

Substitute w = 14 into the equation for length l.

l = w/2 + 9 l = 14/2 + 9 l = 16

The length of the rectangle is 16 cm.

match the terms to the definition ​

Answers

Answer

1,3,4,2

Step-by-step explanation:

1. the distance from the center of the circle to any point of the circle
2. the distance around the outside of a circle
3. the ratio of the circumference of a circle to its diameter, approximately 3.14
4. the distance across a circle through the center

A bicyclist needs to pass two check points before completing a race. The matrix equation that represents the distance, in miles, from the starting point to checkpoint 1, y represents the distance from checkpoint 1 to checkpoint 2, and z represents the distance from checkpoint 2 to the finish line.

Answers

Answer:

A.

i believe you are right

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