What is the effect of multiplying both sides of an inequality by a negative number? Explain and give an example.

Answers

Answer 1

Let's say we start with the true statement that 2 < 5

Multiplying each of those numbers by -1 means we have...

2 turn into -25 turn into -5

If the inequality sign stayed the same, then we'd have the false statement -2 < -5. Use a number line to see why this is false. Note how -2 is to the right of -5, so it should be larger.

To fix this error, we flip the inequality sign.

So we go from 2 < 5 to -2 > -5

Rule: Multiplying both sides by a negative number always flips the inequality sign.


Related Questions

Which algebraic rule describes the translation of ΔDEF to ΔD'E'F'?

please be fast

A.

(x, y) →(x − 6, y + 2)


B.

(x, y) →(x − 2, y + 6)


C.

(x, y) →(x + 6, y − 2)


D.

(x, y) →(x + 2, y − 6)

Answers

C is the answer. C is +6 and y is -2

Answer:a

Step-by-step explanation:

Answer correct and fast and u get brainliest.

Answers

Answer:

B.

Correct me if I'm wrong......

plsssss help me im begging u

Answers

Answer:

180

Step-by-step explanation:

8x15 is 120. The formula to find the area of a right triangle is base x height divided by two.
120/2 is 60
60x3 is 180.
180 plants

the answer is 180 !!!

Does Brady have enough information to figure out the values of a and b? Explain your reasoning.

Answers

Answer:

According to the given attachment

L is a straight line and we know Sum of all angles formed on a straight line is 180° .

So,

➠ a + 90° + b = 180°

➠ a + b = 180° - 90°

➠ a + b = 90°

If angle a = angle b so we can easily find the value of a & b .

So, according to me " the given figure has not enough information to find out the value of a & b .

Please help! I do not understand how to do this..?

Answers

y =2x

......................................

PLEASE HELP SCREENSHOT IS ATTACHED PLEASE ALSO SAY WHAT YOU DID TO GET THE ANSWER!!!!!

Answers

half a circle is 180 degrees and we have to find x what we know is that one angle is 20 therefore the other side must be equal to 20 as well. Now that we know that we can add 20 +20 and we get 40. Now we can minus 40 from 180 therefore X is equal to 140.

Answer:

X= 140 degrees.

Step-by-step explanation:

First, we see that 20 +x + (40-20).

Then we keep in mind that 40-20=20

so 180-40+x=

140 degrees!

Solve for W
Simplify as much as possible

5(w+3)=50

:’) help meh plz

Answers

[tex]5(w + 3) = 50 \\ \\ 5w + 15 = 50 \\ \\ 5w = 50 - 15 \\ \\ 5w = 35 \\ \\ w = \frac{35}{5} \\ \\ w = 7[/tex]

# be care#

5(w+3)=50
Divide both sides of the equation by 5
W +3 = 10
Move the constant to the rigth-hand sode and change its sign
W = 10 - 3
Substract the numbers

W = 7
.

How many triangles can be constructed with angles measuring 50° , 90° and 40°

• none
• one
• more than one

PLEASE HURRY I NEED A ANSWER ASAP
30 POINTS!!!!!!

Answers

Answer:

We know that in a triangle the sum of all the interior angles must be 180°.

The given angles 50º, 90º and 40º

The sum of the angles 50º+ 90º + 40º= 180°

Thus, a triangle is possible with the given measurement.,

Let there is another triangle with the given angles, then by AAA similarity criteria they are similar.

Similarly, all the triangles with the same measurements of the angles must be similar.

Therefore, there are infinite number of triangles can be possible with angles measuring 50º, 90º, and 40º.

Step-by-step explanation:

Mark as brainliest

pls ill give brainelist

Answers

Answer:

scatterplot b

Step-by-step explanation:

all of the points are farther away from the line than the other scatterplots

Answer: Scatterplot B

Step-by-step explanation:

Scatterplot B has the weakest fit because it is far away (and more scattered) from the line on the graph than on graphs A and C. Also, it is important to understand that the closer the dots are to the line on the graph, the more credible the data is, since there is a closer correlation to line and points. Hope that helps!

Brainlest to first correct answer!!!
Michaela is making memory boxes. She wants to cover the boxes with sheets of decorative paper on all sides before filling them. This net represents a single memory box.


How much paper is needed to cover each memory box?

Answers

Answer:5220

Step-by-step explanation:i did the 6th grade K12 quiz

The amount of paper needed to cover each memory box is 5220 square inches.

How to find the surface area of a cube?

A cube has all sides congruent, so its all sides have same area.

Supposing that the considered cube has side length (also called edge length) of L units.

Then, its one side's area equals  L^2 sq. units (as each side is a square, so we used formula for area of a square).

Since there are 6 such sides in a closed cube, thus, its surface area evaluates to

[tex]S = L^2 + L^2 + ... + L^2 \text{\: (six times)} = 6L^2 \: \rm unit^2[/tex]

We are given that;

The length breadth and height of box is 35in, 24in and 30in.

Now,

The formula for the surface area of a rectangular prism is:

SA = 2(lw + lh + wh)

Where:

SA = surface area l = length w = width h = height

For this memory box, you are given the length (35 in), width (24 in) and height (30 in).

Plugging these values into the formula, we get:

SA = 2(35 × 24 + 35 × 30 + 24 × 30) SA

= 2(840 + 1050 + 720) SA

= 2(2610) SA = 5220

Therefore, by the area of cube the answer will be 5220 square inches.

Learn more about area of a cube here:

https://brainly.com/question/295960

#SPJ3

According to the diagram shown, a plane's wing is 300 m above the ground sighted at a position 400 m away. What is the length of the side labeled x?
PLEASE HELP!!!!!!!!


A 500 m


B 350 m


C 100 m


D 700 m

Answers

Answer:

A 500 m

Step-by-step explanation:

We use the pathagoreon theorem which is a squared + b squared = c squared

500 meters or a friend

Answer the question in the picture if you have any questions put them in the comment section

Answers

Answer:

A. 6/7 × 7/8

E. 9/10 × 10/12

didn't notice the A before :')

Sven determined that the x-coordinate is approximately 3.6 because the point is closer to 4 than 3 and seems to be a little more than halfway between them.


What is the approximate value for the y-coordinate?


A.)y =–1.1


B.)y= –1.4


C.)y=-1.8


D.)y=-1.9

Answers

Answer:

c

Step-by-step explanation:

actually the answer is d

GIVING BRAINLIEST FOR BEST ANSWER!
Solve six and two sixths times one and one half.
A) Six and two twelfths
B) Eight and six twelfths
C) Nine and six twelfths
D) Ten and two twelfths

Answers

The answer is A


Explanation

Answer:

C) 9 and 6/12

Step-by-step explanation:

The easiest way to do this would be to turn both of the mixed numbers into improper fractions, this makes 6 and two sixths into 6 x 6 +2= 38/6 and 1 and one half into 1 x 2 + 1 = 3/2. From there multiple the numerators together (38x3) and the denominators together (6x2) to get 114/12. To turn this into a mixed number again, divide 114 by 12 to get 9 with a remainder of 6 to get 9 and six twelfths

Can you fill out this table please?

Answers

Answer:

top middle: 7/25=28%

top right: 25/25=100%

middle left: 13/25=52%

middle middle: 12/25=48%

middle left: 25/25=100%

bottom left: 31/25=62%

bottom right: 50/50=100%

The answer above is correct!!!^^

PLS HURRY HAVE 10MIN. LEFT
the unit digit of a 2 digit number is 5 more than the tens diget and the number itself is 3 times the sum of the digits. find the NUM

Answers

Answer:

27

Step-by-step explanation:

Let the tenth digit is x and units digit is y.

We have the following equations:

y = x + 5(x + y)*3 = 10x + y

Simplify the second equation:

3x + 3y = 10x + y2y = 7x

Solve by substitution:

2(x + 5) = 7x2x + 10 = 7x7x - 2x = 105x = 10x = 2

Find y:

y = 2 + 5y = 7

The number is 27

Here the equations are if the digits be a and b

b=a+5--(1)

3(a+b)=10a+b

3a+3b=10a+b7a=2bb=7/2a--(2)

Equate both

7a/2=a+5

7a=2a+105a=10a=2

And

b=2+5=7

The number is 27

help, stuck with math

Answers

Answer:

80

Step-by-step explanation:

What is the value of m in this proportion? 1/2/3/5= 1/3m

Answers

Hello there today we will solve your problem!

First off, let's give our definitions to what we are doing here, so late this becomes more understandable to you

Definitions

Algebra - the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.

Division - the action of separating something into parts or the process of being separated

__________________

[tex]{\huge{\boxed{\mathbb{EQUATION}}[/tex]

[tex]1/2/3/5=\frac{1}{3} m[/tex]

simplify and we get

[tex]\frac{3}{10} =\frac{1}{3}m[/tex]

multiply both side by [tex]\frac{1}{3}[/tex]

[tex]\frac{9}{10} =m[/tex]

What is the
Area of Triangle:
Area of Semicircle:
Total Area:

Answers

Answer:

Area of Triangle: 180 square units

Area of Semicircle: 314.15926536

Total Area: 494.15926536

Step-by-step explanation:

Answer:

Area of Triangle: 180

Area of Semi-circle: 157

Total Area: 337

Step-by-step explanation:

Area of triangle: 1/2(l x w)

1/2[(20) x (18)] = 180

Area of a semi-circle: 1/2(pi)(radius)²

1/2(3.14)(10)²

1/2(3.14)(100)

1/2(314)

157

((DON'T FORGET THAT IT'S ASKING FOR RADIUS AND NOT THE DIAMETER))

Total: add both areas

180 + 157

337

This math equation is very confusing

Answers

I think its D

!Don't Attack Me If Wrong!

Does anyone know what 13,537 + 13,357= ?

Answers

Answer: 26894

Step-by-step explanation:

The answer for this question is 26,894

I NEED HELP PLEASE : A shelf has different sizes of bottles of laundry detergent. This line plot shows the number of cups of laundry detergent in each bottle. Eric buys the kind of detergent that has the most bottles. He uses 18 cup for every load of laundry he does.


How many loads of laundry can Eric do with his bottle of laundry detergent?

Answers

Answer:

Hey, MitsukuSan! To answer your question, Eric can do 4/9 loads of laundry!

Step-by-step explanation:

4/9 hopes this helps!! :)

HELPpppppppppPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPp

Answers

Answer:

13

Step-by-step explanation:

A integer is a whole number so 0+13=13. So 13 is the integer.

The answer would be -13

look at the picture below thank you

Answers

ratio of side length to perimeter 1:4
ratio of perimeter to side length 4:1
ratio of radius to diameter 1:2
ratio of diameter to radius 2:1
ratio of people to tables 5:1
ratio of tables to people 1:5

Answer:

a. ratio of side length to perimeter 1:4

b. ratio of perimeter to side length 4:1

c. ratio of radius to diameter 1:2

d. ratio of diameter to radius 2:1

e. ratio of people to tables 5:1

f.  ratio of tables to people 1:5

find the radius and the diameter of the circle

Answers

Answer: D=13, R=6.5

Step-by-step explanation:

The diameter is the length of the whole circle. The radius is the length of 1/2 the circle.

That said,

the diameter is alreaday given because that line goes across the whole circle.

D= 13

R= 6.5

Now the radius is 1/2 the diameter. 1/2 of 13= 1/2x13= 6.5

Hope this helps :)) Braianliest would be appreciated thanks !!

HELP! BRAINIEST IF CORRECT!!
Kate biked 8 miles due north to the park, then 6 miles due west to the mall. How far is Kate from her starting point?

Answers

Answer:

Kate is 9.85 miles from her starting point.

Step-by-step explanation:

√92+42=√81+16=√97≅9.85 miles

Kate is 9.85 miles from her starting point.

hope I helped

Kate is 9.48 away form the mall

Which would be the most appropriate way to estimate -6.1(0.22)? Check all that apply.

A. Use rounding to get -6(0.2), and then multiply.
B. Use compatible numbers, such as -6(0.5), and then multiply.
C. Use the benchmark numbers -6 and 1, and then multiply.
D. Use front-end estimation to get -6(0.2), and then multiply.
E. Round the factors to the nearest whole number, and then multiply.

Answers

1,2,3 it think

hope this helps

Answer:

A and D as these answers are very close to the actual answer

Step-by-step explanation:

-6.1 x 0.22 = -1.342

A) -6 x 0.2 = -1.2

B) -6 x 0.5 = -3

C) -6 x 1 = -6

D) -6 x 0.2 = -1.2

E) -6 x 0 = 0

What is the value of x?

Answers

Answer:

25

Step-by-step explanation:

a2  +  b2  =  c2

(7²)  +  (24²)  = c2

c2=25

This is an IXL I need help understanding and doing. I will appreciate the help.

Answers

Answer:

The answer would be <1

Step-by-step explanation:

Complementary basically kinda means like a reflection. The opposite of <4 is <1. Here's another, 2 is the the angle complementary to 5.

Hope this helps!

SOLVE ASAP EASY
4 yd 2 ft 7 in+3 yd 5in

Answers

Answer:

8 yards

Step-by-step explanation:

5 in + 7 inch = 1 ft+2 ft=1 yd + 3 yd + 4 yd = 8 yd

Answer: 24 feet

Step-by-step explanation:

5 in + 7 in = 12 in 12 in = 1 ft + 2 ft = 3 ft

4 yd + 3 yd = 7 yd = 21 ft

21 ft + 3 ft = 24 ft

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