Mathematics Middle School

anyone know inverse operations, cause I am confused, I looked online and it said
Example: 20 + 9 = 29 can be reversed by 29 − 9 = 20 (back to where we started)
And the other way around:

Example: 15 − 3 = 12 can be reversed by 12 + 3 = 15 (back to where we started)
so like when do we do the 2nd way or can we just do either one of them???

Answers

Answer 1

Answer:

For inverse operations, it helps make solving equations easier. Say if you'd rather add than subtract, then you can do the inverse of a negative equation.

Inverse operations are also very helpful for linear equations.

To find the inverse of an equation, we change the plus sign to a negative sign. Then, we switch the first number and the answer.

Ex:

13 - 2 = 11    (now change plus to minus)

13 + 2 = 11      (not the answer yet)

Now we switch the first number with the answer!

11 + 2 = 13

Hope this helped, I tried to explain it easily.

Answer 2
11+2=13 that’s the answer maybe

Related Questions

Hello,What is pythagorean theorem?

Answers

Answer:

Step-by-step explanation:

Pythagorean theorem, the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, a2 + b2 = c2.

Help please
(5points)

Answers

Answer:

Heyyyy. I ooobooo

Step-by-step explanation:

Answer:

C.1444

Step-by-step explanation:

LOSLS,SSS

Jennifer competed on her school’s track team as a high jumper. To advance to the final round, she must successfully jump 4 1/2
feet or higher. If h represents the height of Jennifer’s jumps, which inequality represents this?

A. h>4 1/2
B. h≥4 1/2
C. h<4 1/2
D. h≤4 1/2

Answers

Answer:

its going to be B im doing this too in math

Step-by-step explanation:

B because she has to get 4 1/2 or higher

Which could be the area of the base of the triangular prism?

A triangular prism. The rectangular sides are 5 feet by 4 feet, 5 feet by 5 feet, and 5 feet by 3 feet. The triangular sides have a base of 4 feet and height of 3 feet.

[Not drawn to scale]
6 ft2
10 ft2
12 ft2
20 ft2

Answers

Answer:

c - 12ft

Step-by-step explanation:

Answer:

option 3 , 12

Step-by-step explanation:

smith has a garden with 40 carrots in it. They pick some carrots to feed their pet rabbit, leaving 90% of the carrots in the garden. How many carrots does Smith have left in the garden?

Answers

90 divided by 40 and the equals 2.25 so it would be 2.25%

Answer:

if you do 40×90% (0.90) = 36 carrots left in the garden.

Can someone plz help me with this!!!

Answers

Answer: 3125

Step-by-step explanation:

multiply by five

Your answer should be 3,125. I’m sorry if I’m wrong.

Explain: you times each number by 5
5 x 5=25
25 x 5=125
125 x 5=625
624 x 5=3,125

Each cude inside the rectangular prism has an edge length of 3/4 inch. what is the volume of the rectangle prism?

Answers

The answer is 9 in.3

The answer is 9 in 3

Can someone plz help me with this one problem!!!

Answers

Answer:

yes

Step-by-step explanation:

It is true

Answer:

Yes

Step-by-step explanation:

1,4 the first coordinate is X and the second is Y so it means y = 4 and X = 1

So that means the equation becomes 4 = 4 times 1 which is correct since 4 times 1 is 4 and 4=4

The length of a rectangle is 3 1/6 cm longer than the width. The perimeter of the rectangle is 15 1/3 cm. What are the width and length of this rectangle?
PLS HELP ASAP!!!!!!!!!!!!!!!!!

Answers

Answer:

length 4.96 cm(4 24/25) Width 1.80 cm( 1 8/10 cm)

Step-by-step explanation:

If the perimeter is 15 1/3 cm and the length is 3 1/6 cm longer than the width. Then first you have to take away 6 1/8. How did I get that? Because since a rectangle has 2 sides of length and 2 sides of width, I added 3 1/6+3 1/6. When we subtract the whole number you get 7. And when you subtract the fractions you get 5/24. I got that by doing 1/3x8  and 1/8x3. So i get a deminitor of 24. Then you have to divide 7 5/24 into 4 parts, since there is four sides. Which then you get ~1.80. That means the width is abut 1.80. And if you add the 3 1/6 back on the length it will be about 4.96.

HELP PLS o 9 10 11 Are the triangles below acute, obtuse, or right? Triangle A Triangle B Triangle C Triangle D 55 80° 600 35 115 50° 50 30 35° 30 Acute Obtuse O Right Acute Obtuse O Right O Acute Obtuse Right O Acute O Obtuse O Right​

Answers

It keeps saying the answer is inncorrcet and I don’t know why

Ben wants to go fishing on the lake

A boat rents for $12 per hour, and a rod and reel rent for $20 per day.

If Ben wants to spend no more than $80, how many hours can he soend fishing on the boat

Answers

Answer: Ben can only rent the boat for 5 hours.

Step-by-step explanation:

You have to set up an equation. It would be 20 + 12h = 80

20+12x=80

12x=80-20

Then divide both sides 12x=60

And you get 5

Ben can spend at most 6 hours (72 dollars) being on the boat.

Now if you wanna include the rod and reel, Ben can spend 29 hours (24 hours from the rod and reel, and 5 hours on the boat) Which all adds up to 80

helppppppppppppppppppppppppppp me plz

Answers

Yes they are equivalent expressions. If you take the z to the power of two, and subtract that from the other z to the power of two, it is zero. So you are left with four which is the answer

please help will mark brainliest. random answers will be reported

Answers

B I believe because it is turning about the origin switching signs

Please help I dont understand,Will give brainly

Answers

Answer:

4. 2/11 < 9/10  5. 3/5 < 1/4  6. 2/3 > 4/6

Step-by-step explanation:

Hope this helped :)

2/11 < 9/10
3/5 > 1/4
2/3 = 4/6

Hope this helps✨

A produce box can hold no more than 25 pounds of potatoes, write and graph an inequality to represent this situation

Answers

Answer:

hola no se ingles hací que no te entiendo yes

A car is traveling at a constant speed. It travels 3 1/2 miles in 5 1/4 minutes. How long will it take to travel 70 miles.

Answers

Answer: 122 1/2 minutes

Step-by-step explanation:

I got this answer by first subtracting 5.25-3.50=1.75 and that was how many minutes it took per mile then I multiplied 1.75x70=122.50 to get my answer.

It will take 105 minutes

Give brainliest please thank you.

Plsss provide Explanation to IF you can...very confused!!

Answers

Answer:

1 rotation/circumference = 879.2/10

87.9= 2x3.14xr

= 14

Step-by-step explanation:

brainliest would be appreciated

i’m pretty sure the answer is 14

Alright someone tell me if all these choices correct

Answers

First one is true for when she shades 2

Neil goes to the pet shop and
selects a treat for his dog. He
chooses one, returns it to the
bunch, and then chooses another.
What is the probability that Neil
selects a bone and then a collar?

Answers

Answer:

b (1/15)

Step-by-step explanation:

Answer:

(1/15)

Step-by-step explanation:

pls put explanation to so i undersand hat to do

Answers

Answer:

So Im basicaly just replying to get points sorry

Look i sure someone will answer it soon good luck buddy I have faith in you

Step-by-step explanation:

836 students were asked what their favorite subject in school is. The results are as follows: math: 53%, ELA 19%, gym 21%, social studies 7%. How many students said their favorite subject was math? *

Answers

Answer:

443 students

Step-by-step explanation:

Answer:

443 students

Step-by-step explanation:

Express as a percent. Round to the nearest tenth

Answers

Answer:

76.5% would be if we round to the nearest tenth

76.47%  is the answer I think

help! please! w/4.2 > 5.6w

Answers

Answer:

no solutions

Step-by-step explanation:

w>23.52w

1>23.52

false

so no solutions

there isn’t any solutions

anyone know? need help asap please

Answers

Answer:

y=-2x+190

Step-by-step explanation:

Zach solves the system below and finds the solution (5, −6)

Answers

Answer:

The answer would be: (5, −6) = -1

Step-by-step explanation:

-1     <------- thats the answer :)

Complete this number sentence with the correct symbol.

0.2 ___ 0.20

A) <

B) >

C) =
help me PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ

Answers

Answer:

the correct awnser is most definitely C

The answer is C. ( 0.2 (0.20) _ 0.20 )

I'll give brainliest if someone helps me.

Answers

Answer:

Scale Drawing - Two dimensional model of an object.

Scale Model - Three dimensional model of an object.

Step-by-step explanation:

I need help please and thank you ;[

Answers

Answer:

12 + 12x

Step-by-step explanation:

Given

3(4 + 4x) ← multiply each term in the parenthesis by 3

= 12 + 12x

The answer is 12+12x


You divide the 3 with both 4’s

3x4=12
3x4x= 12x

Can someone solve this problem for me please? Thank you!

Answers

Answer:

FOR THE FIRST ONE : 36.4

FOR THE SECOND : 18.9

FOR THE THIRD : X*(0.30)

Step-by-step explanation:

IN THE FIRST EXAMPLE I MULTIPLIED THE NUMBER BY 0.30 AND THEN ADDED THE NUMBER TO THE MAIN NUMBER

IN THE SECOND I MADE THE SAME BUT I SUBTRACTED INSTAID

IN THE THIRD I WILL MULTIPLY X BY 0.30 AND THEN SUBTRACT THE NUMBER FROM THE VALUE OF X

Evaluate the equation. f + 14 2/7= 23 I WILL GIVE BRAINLYEST

Answers

Answer:

Third item in the list

Step-by-step explanation:

Third function:  f(x) = x + 9.  If we substitute 14 for x, we get f(14) = 14 + 9 = 23.

Step-by-step explanation:

Answer:

[tex] \huge\: f = \frac{61}{7} \: or \: 8\frac{5}{7} [/tex]

Step-by-step explanation:

to understand thisyou need to know about:equationPEMDASgiven:[tex]f + 14 \frac{2}{7} = 23[/tex]to find:[tex]f[/tex]let's solve:[tex]step - 1 : define[/tex][tex]f + 14 \frac{2}{7} = 23[/tex]

[tex]step - 2 : solve[/tex]

[tex]cancel \: 14 \frac{2}{7} \: from \: both \: sides \\ f + 14\frac{2}{7} - 14 \frac{2}{7} = 23 - 14\frac{2}{7} \\ f = 23 - 14 \frac{2}{7} [/tex][tex]simplify \\ f = 23 - \frac{100}{7} \\ \frac{161 - 100}{7 } \\ \frac{61}{7} [/tex]

[tex] \therefore \: f = \frac{61}{7} \: or \: 8\frac{5}{7} [/tex]

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