When solving inequalities, how do you know when to change the inequality symbol?

Answers

Answer 1

When you divide or multiply by a negative number, you must change the direction of the inequality sign. This is because of this rule of inequalities: As you can see, x is originally less than y. But, when it’s multiplied by a negative number, x becomes greater than y. That’s because smaller negative numbers are closer to 0, making them worth more.


Related Questions

A group of 3 people are sharing chocolates. Each person wants 8 chocolates and each box has 6 chocolates. How many boxes do they need?

Answers

Answer:

Step-by-step explanation:

4 boxes should do

How to find the surface area of a rectangular prism

Answers

Answer:

A=2(wl+hl+hw)

Step-by-step explanation:

To find the surface area of a rectangular prism, measure the length, width, and height of the prism. Find the area of the top and bottom faces by multiplying the length and width of the prism. Then, calculate the area of the left and right faces by multiplying the width and height.

Select the correct answer.
Howard's bank gave him a personal loan because they found him creditworthy. Which type of loan did Howard get?
Х
A.
a secured loan
B.
an unsecured loan
OC
a variable-rate loan
Next

Answers

The correct answer is "Secured Loan." Hope this helps! <3

I need a answer quick!

Answers

Answer:

{5, -3} {0, -1/3}

Step-by-step explanation:

For the first problem, they all have a GCF of 2, so you divide it all by 2 to get x^2-2x-15=0. Now, we need two factors of -15 that equal -2. Those are -5 and 3. Our new equation is x^2-5x+3x-15. To factor, the GCF of x^2 and 5x is x, so divide by x and you get x(x-5). The GCF of 3x and 15 is 3, so divide by 3 and you get 3(x-5). Now, put the numbers outside of the parenthesis into their own, and you get (x+3)(x-5). To get to 0, for the first one x has to be -3, and for the second, x has to be 5.

For the second, 12x^2 and 4x have a GCF of 4x. Since this we don't have a c value, we just divide and factor like this: 4x(3x+1). Since 4x is outside the parenthesis but we don't have any other terms outside, x=0 because 4(0) is 0. To cancel out 1, our x value inside has to be -1/3, because -1/3*3=-1.

Hope this helped!


Use the drawing tool(s) to form the correct answer on the provided grid.
A team of painters is working on the exterior of a building. One of the painters sets a ladder on the ground 5 feet from the base of the building
and leans it up to touch the wall. Using an angle measurement tool, he finds that the angle the ladder makes with the ground is 73.61 degrees.
Use the grid provided to draw a scale representation of the ladder against the wall, rounding calculations to the nearest foot. Each unit on the
grid represents one foot. i’m

Answers

The Length of ladder is 17.73 feet.

What is angle of elevation?

The angle formed by the line of sight and the horizontal plane for an object above the horizontal.

distance of the foot of the ladder =  5 feet

Using trigonometry,

cos [tex]\theta\\[/tex] = B/H

cos 73.61= 5/H

0.282 = 5/H

H = 5/0.282

H = 17.73 feet

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Which of the following is an example of a rational function?

f(x) = 270(1.01)x
g of x equals the quantity x squared minus 5x plus 7 end quantity divided by the quantity x minus 3 end quantity
h(x) = |x + 2|
p(x) = log4(x)3

Answers

Answer:

(Second Option) = g of x equals the quantity x squared minus 5x plus 7 end quantity divided by the quantity x minus 3 end quantity

Step-by-step explanation:

A rational function contains a polynomial in both the numerator and the denominator. This answer fits that requirement.


A rental car company charges $34.35 per day to rent a car and $0.09 for
every mile driven. Enola wants to rent a
car, knowing that:

She plans to drive 425 miles.
She has at most $210 to spend.
Use the drop-down menu below to write an inequality representing d, the
total number of days Enola can rent the car while staying within her budget.
d

Answers

The answer is $510 to spend and Enola should have to rest to resell

Which lines are perpendicular to 3x – y = 10? Select all that apply. A. y = 3x + 5 B. y = –13x + 17 C. x + 3y = 27 D. y – 2 = 13(3x + 36)

Answers

The equation of the line which is perpendicular to 3x - y = 10 is y = -(1/3) x + c. Then the correct option is B.

What is the linear system?

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

The line that is perpendicular to 3x - y = 10.

The equation can be written as

y = 3x - 10

Then the slope of the line will be

m₁ = 3

Let m₂ be the slope of the second line.

The product of the slope of the perpendicular lines is a negative one.

m₁m₂ = -1

 3m₂ = -1

   m₂ = -1/3

Then the equation of the perpendicular line will be

       y = - (1/3)x + c

     3y = -x + c

x + 3y = c

where c is the constant.

Thus, the correct option is B.

More about the linear system link is given below.

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Koji is cooking dinner. he has a yellow onion that weighs 0.59 pounds, and a red onion that weighs 208.65 grams. there are 453.5924 grams in a pound. which onion is heavier, and how many ounces heavier is it? a. the red onion is 4.48 ounces heavier than the yellow onion. b. the red onion is 7.69 ounces heavier than the yellow onion. c. the yellow onion is 1.56 ounces heavier than the red onion. d. the yellow onion is 2.08 ounces heavier than the red onion.

Answers

By using changes of units, we will see that the correct option is d.

Which onion is heavier?

We know that the yellow onion weighs 0.59 lb

The red onion weighs 208.65 grams.

The thing we need to do, is write the first mass in grams, then we use:

1 lb = 453.59g

Then we can rewrite:

0.59 lb =  0.59* 453.59g = 267.62g

Then we can see that the red onion is heavier.

The difference in mass is:

m = 267.62g - 208.65g = 58.97g

Now we want to rewrite this in ounces, remember that:

1g = 0.035oz

Then:

58.97g = 58.97*0.035oz = 2.064 oz

Then the correct option must be d.

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Using the data set below, what is the mean? 4,6,6,7,7,8,8,8,9
A 9
B 7
C 63

Answers

Answer: B, 7

Step-by-step explanation: Mean is adding all numbers then dividing so 4 + 6 + 6 + 7 + 7 + 8 + 8 + 8 + 9 is 63 and then divide it by the total numbers (9)

63 divided by 9 is 7

7 is the mean, or B

you add all them together and get 63 then divide by 9 and you get 7

can someone help me with this problem? Thank you!

Answers

113.04 ft2

Step-by-step explanation:

r=d/2=12/2=6

A= pi*r*r=3.14*6*6

A=113.04

Answer:

113.04

Step-by-step explanation:

r = 12÷2

r=6

A=3.14×6^2

A=113.04

This table gives information about the colors and engine types of motorcycles sold at a showroom in a month.


150 cc 180 cc

Black 18 24

Blue 15 17

Red 26 21


Identify the tables that represent the relative frequencies of this data either by row or by column. Round your answers to the nearest hundredth

Answers

The relative frequencies of this data by row is

          150 cc    180 cc

Black 0.43         0.57

Blue   0.47         0.53

Red   0.55          0.45

How to determine the relative frequency table?

The table of values is given as:

          150 cc    180 cc

Black 18              24

Blue   15              17

Red   26              21

Calculate the row total.

          150 cc    180 cc    Total

Black 18              24          42

Blue   15              17           32

Red   26              21           47

Divide each element by the row total

          150 cc    180 cc

Black 0.43         0.57

Blue   0.47         0.53

Red   0.55          0.45

Hence, the relative frequencies of this data by row is

          150 cc    180 cc

Black 0.43         0.57

Blue   0.47         0.53

Red   0.55          0.45

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does someone mind helping me with this question? Thank you!

Answers

Answer:

114 sq ft

Step-by-step explanation:

Find out the area of the end triangle;

2x3=6

6x0.5 (1/2) = 12

Find the perimeter of the end triangle;

3+3+3=9

Find the area of the rectangle;

9x10=90

Find the total surface area;

2x12=24

24+90=114 sq ft

Answer:

3

Step-by-step explanation:

the surface area is the base

you will know what the base is based on the name

since it's a triangular prism, the base is a triangle

the triangle in the picture is 2 in hight and and 3 on the ground

2 x 3/2

6/2

3

i need help pls asap

Answers

X=85 y=100 because it needs to add up to 360

Help me asap!! PLS I RLLY NEED IT

Answers

Answer:

Step-by-step explanation:

A.27 (aka 3x3x3)

B.7x7x7x7

C4x4x4x4x4x4x4

D.5x5x5x5x5x5

E.9x9x9

F.8x8

G.12x12x12

H.1x1x1x1x1x1x1x1x1x1x1x1

I.8x8x8x8

J.6x6x6x6x6

K.12x12x12

L.18x18x18

7=a-5 what does a equal

Answers

[tex]\rule{300}{1}\\\dashrightarrow\large\textsf{\textbf{\underline{Given question:-}}}}[/tex]

    7=a-5. What does a equal?

[tex]\dashrightarrow\large\textsf{\textbf{\underline{Answer and how to solve:-}}}[/tex]

When solving an equation, it's always a great idea to make sure all variables are on the left side of the equation and the numbers are on the right.

Since in our equation, we have numbers on both sides, we need to move all numbers to one side:-

7=a-5

This is the same as

a-5=7

Now, add 5 on both sides:-

a=12

So we conclude that a=12.

Good luck with your studies.

[tex]\rule{300}{1}[/tex]

What is the approximate circumference of the circle that has a center at (2, 1) and passes through the point (7, 1)? A 10 units B. 16 units С 31 units D 79 units​

Answers

Answer:

C. 31 units

Step-by-step explanation:

Circumference of a circle is the distance around the circle and is given by C = pi•d

Your circle with a point and center given has a radius of 5 because from (2,1) to (7,1) is 5 units. Radius 5 means the diameter is 10.

C = pi•10

= 3.14•10

= 31.4 using 3.14 as an approximation for pi.

Circumference is approximately 31 units.

It’s c.31 units
Trust me on this one


1. Hypothesis: 'n is an odd number.Conclusion: n + 1 is an even number Which of the following is the correct conditional statement that combines the given hypothesis and conclusion?
On is an odd numberthen n + 1 is an even number".
If nu is not an odd number, then n + 1 is not an even number".
if nu is an odd number then n + 1 is not an even number".
If n is not an odd number then n + 1 is an even number

Answers

Answer:

A, If n is an odd number, then n + 1 is an even number

Step-by-step explanation:

Any number that is odd, when taken up by the integer 1, will become an even number.


Solve the equations x + y = 300 and 12x + 15y
4,140

Answers

Answer:

x=120

y=180

Step-by-step explanation:

x=300-y

12x+15y=4140

12(300-y)+15=4140

y=180

substitute

x=300-180

x=120

Solve for X and Y in the triangle shown below. Use the special right triangle rule to give exact answers.

Answers

Answer:

[tex]x = 13 \\ y = 13 \sqrt{2} [/tex]

Step-by-step explanation:

[tex] \cos(45) = \frac{13}{y} = \frac{ \sqrt{2} }{2} \\ y = \frac{26}{ \sqrt{2} } = 13 \sqrt{2} \\ x = 13 \\ because \: angles \: are \: equally \: 45[/tex]

Alan wants to install security cameras in his store, which has dimensions of 30 feet by 30 feet. Each camera can view an area of approximately 112.5 ft2, with a viewing area shaped like a right triangle. How many cameras will be necessary to cover the entire store? . If he places cameras only in the corners of the store, how much area is left uncovered? ft2.

Answers

Based on the information given, the area that will be left uncovered will be 450ft².

From the information given, the area of the store roof will be:

= 30 × 30 = 900ft²

The area viewed by the camera = 112.5ft²

Therefore, the number of cameras needed will be:

= 900/112.5 = 8

When he places the cameras in the corners of the store, he area covered will be:

= 4 × 112.5 = 450ft²

Therefore, the area left uncovered will be:

= 900 - 450

= 450 ft²

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Fill in the table using this function rule.
y=2 + 5x
X
у
3
0
4.
5
10

Answers

[tex]\Huge{\mathcal{\color{black}{Hey \: there!}}}[/tex]

[tex] \large\underline{ \boxed{ \sf{✰Important\: points }}}[/tex]

A relation in which each element of the domain is associated with exactly one element of the codomain.function rule is also known as chain rule (A formula for computing the derivative of the functional composition of two or more functions.)

through this we can easily value of another variable by computing value of one variable

[tex]\rule{70mm}{2.9pt}[/tex]

[tex] \underline{ \boxed{ \sf{✰Given\: function }}}[/tex]

⇒y=2+5x

★ if x=3 then y =17

y= 2+5(3)y= 2+15y=17

★ if x=4 then y= 22

y=2+5(4)y=2+20y=22

★ if x=5 then y=27

y=2+5(5)y=2+25y=27

★ if x=10 then y=52

y=2+5(10)y=2+50y=52

[tex]\rule{70mm}{2.9pt}[/tex]

Hope it helps!

Solve for the variable

4 = 7/y

Answers

Answer: y = 7/4

Step-by-Step Explanation:

=> 4 = 7/y

= 7/y = 4

=> y = 7/4

Therefore, y = 7/4

Step-by-step explanation:

4=7/y

cross multiplying

4×y=7

dividing bothsides by 5

4y/4=7/4

y =7/4

Which Kind of Triangle is Shown?

Answers

Hi! The answer is right scalene triangle! Hope this is right! :)

divide £36 in the ratio 5:1

Answers

Answer:

30 : 6

Step-by-step explanation:

divide £36 in the ratio 5:1

36 : (5 + 1) =

36 : 6 =

6 (unit)

6 * 5 = 30

6 * 1 = 6

30 : 6

Determine the equation of the circle graphed below.

Answers

The standard equation of the circle in the graph is (x - 2)² + (y - 5)² = 16

How to determine the standard equation?

From the graph, we have the following parameters:

Center (a,b) = (2,5)Radius, r = 4

The equation of the circle is then calculated using:

(x - a)² + (y - b)² = r²

So, we have:

(x - 2)² + (y - 5)² = 4²

Evaluate

(x - 2)² + (y - 5)² = 16

Hence, the standard equation of the circle in the graph is (x - 2)² + (y - 5)² = 16

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Which is the better deal?
A. 8 ounce jar of sauce for $1.20
B. 12 ounce jar of sauce for $1.44
C. 16 ounce jar of sauce for $2.40
D. 4 ounce jar of sauce for $0.64

Answers

B

It is B because When you do 1.44/12 you get 0.12 so, 12 ounce jar of sauce for $1.44 is the best deal.

√14y²-20y+48+√14y²-20y-15=9
√14y²-20y+48-√14y²-20y-15=....?​

Answers

Answer:

=−40y+33

Step-by-step explanation:

√14y2−20y+48−√14y2−20y−15

Simplifies to:

−40y+33

=−40y+33

If 8 ounces is 1 cup, how many cups would 72 ounces be?

Answers

Answer:

9 cups

Step-by-step explanation:

Because 1 cup is 8 ounces, and we need to find how many cups we need to have 72 ounces.

You have to divide 72/8 and the answer will be 9

43 points helppppppppppppppp

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Refer to the attachment ~

Length and width of the rectangle measure :

[tex]\qquad \sf  \dashrightarrow \:5 - ( - 4) = 9 \: units[/tex]

and

[tex]\qquad \sf  \dashrightarrow \:0 - ( - 5) = 5 \: units[/tex]

Let's find the Perimeter ~

[tex]\qquad \sf  \dashrightarrow \:2(9 + 5)[/tex]

[tex]\qquad \sf  \dashrightarrow \:2(14)[/tex]

[tex]\qquad \sf  \dashrightarrow \:28 \: units[/tex]

Now, find the Area of rectangle :

[tex]\qquad \sf  \dashrightarrow \:9 \times 5[/tex]

[tex]\qquad \sf  \dashrightarrow \:45 \:unit {}^{2} [/tex]

Answer:

Perimeter = 28 unitsArea = 45 square units

Step-by-step explanation:

Finding Perimeter

2(Length + Width)2(9 + 5)2(14)28 units

Finding Area

Length x Width9 x 545 square units
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