ie +5= 20 are shown below. The first and second steps to solve the equation 5 +55= 20-5 5 5 = 15 Which property was applied in the second step? O Addition Property of Equality O Subtraction Property of Equality Multiplication Property of Equality O Division Property of Equality​

Answers

Answer 1

Answer:

x+8=10

x−4=22

x÷3=6

7x=28

Step-by-step explanation:

George has cut down a 60ft high oak tree. He now wants to chop it into smaller pieces. He first cuts it into two pieces that are both 30ft. And then he continues on into making ten pieces that all are 6ft long before loading them onto his truck.

picture08

By looking at the different pieces of wood we can see that the following holds true.

60=30+30=6+6+6+6+6+6+6+6+6+6

This is called the reflexive property of equality and tells us that any quantity is equal to itself

a=a

We can also use this example with the pieces of wood to explain the symmetric property of equality. This property states that if quantity a equals quantity b, then b equals a.

ifa=b,thenb=a

Or if we use our example

if60=30+30,then30+30=60

Another property that can be explained by this is the transitive property of equality. It tells us that if a quantity a equals quantity b, and b equals the quantity, c, then a and c are equal as well.

ifa=bandb=c,thena=c

Or in the numbers taken from the oak tree example

if60=30+30

and30+30=6+6+6+6+6+6+6+6+6+6

then60=6+6+6+6+6+6+6+6+6+6

Since we know that 30 + 30 = 20 + 40 and that 30 + 30 = 60 we can substitute 30 + 30 for 20 + 40 and get 60 = 20 + 40. This is called the substitution property of equality.

If a = b, then a can be substituted for b in any expression.George has cut down a 60ft high oak tree. He now wants to chop it into smaller pieces. He first cuts it into two pieces that are both 30ft. And then he continues on into making ten pieces that all are 6ft long before loading them onto his truck.

picture08

By looking at the different pieces of wood we can see that the following holds true.

60=30+30=6+6+6+6+6+6+6+6+6+6

This is called the reflexive property of equality and tells us that any quantity is equal to itself

a=a

We can also use this example with the pieces of wood to explain the symmetric property of equality. This property states that if quantity a equals quantity b, then b equals a.

ifa=b,thenb=a

Or if we use our example

if60=30+30,then30+30=60

Another property that can be explained by this is the transitive property of equality. It tells us that if a quantity a equals quantity b, and b equals the quantity, c, then a and c are equal as well.

ifa=bandb=c,thena=c

Or in the numbers taken from the oak tree example

if60=30+30

and30+30=6+6+6+6+6+6+6+6+6+6

then60=6+6+6+6+6+6+6+6+6+6

Since we know that 30 + 30 = 20 + 40 and that 30 + 30 = 60 we can substitute 30 + 30 for 20 + 40 and get 60 = 20 + 40. This is called the substitution property of equality.

If a = b, then a can be substituted for b in any expression.


Related Questions

Pray for me I am taking a quiz and I been stuck on this question -4+5=1
Helppppp
Show your work !

Answers

Answer:

Add  −4 and 5.

1=1

Step-by-step explanation: like hopefuly this can helpp

What is the scale factor of Figure B to Figure A in the simplest form?

Answers

simple just multiply 10X25X21.5 for A and the same for B

Billy has 8 red marbles, 6 blue marbles, and 4 green marbles in a jar.
What is the probability that Billy would select a red marble?
A. Between 10% and 20%
B. Between 20% and 30%
c. Between 30% and 40%
D. Between 40% and 50%

Answers

Answer:

A

Step-by-step explanation:

pick A cause 8 6 and 4 = 18

D

the total marbles are 18 so you divided 18 and 100 to get 5.55, then you multiply by the number of marbles and get 44.4

hope this helps

Guillermo bought some reams of paper for $10 each and a $100 printer. He spent a total of $450. Write and solve an equation to find the number of reams of paper Guillermo purchased.

Answers

Answer:

x = amount of paper

10x + 100 = 450

10x = 350

x = 35

Brainiest plz :)

Please, help me out <3

Answers

Answer:

D

Step-by-step explanation:

Every input can only have one output for it to be considered a function. There are repeats of x values with different y values in all of these except for D so D is the correct answer.

Three numbers are in the ratio 3:9:10. If 10 is added to the last number, then the three numbers form an arithmetic progression. What are the three numbers?​

Answers

Answer: 6,18,60

Step-by-step explanation:

Don't really know tbh

Answer:

6, 18, 20

Step-by-step explanation:

your welcome

Help pls and thank you:)

Answers

I think Z=16 I don’t know exactly sorry

if 3 boys build a snow manin 24 minutes how many can 9 finish building in 1 hour

Answers

Answer:

what does "manin" mean I can help i just need to know what that word means

i get ur question now! :)

so in 72 minutes 9 kids can make 8 snowman's

Hope this helps u and A LOT! :)

Step-by-step explanation:

Answer:

The answer is 6.

Finding missing angles please help!!! pls

Answers

Answer:

x = 15

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

5 m
m
7 깄
0
M
K
5
Solve for the perimeter.
3 m
P=

Answers

Answer:

It might be C if im wrong sorry

Step-by-step explanation:

HELP I NEED HELP ASAP

A triangle has a perimeter of 15 feet. Side B is one foot longer than side A. Side C is two feet longer than side A. What is the length of each side.

Answers

Answer:

Side A = 4

Side B = 5

Side C = 6

Step-by-step explanation:

In the following equation, variable a is the length of Side A

a + (a + 1) + (a + 2) = 15

a + a + a + 1 + 2 = 15

3a + 3 = 15

     - 3    - 3

3a (÷ 3) = 12 (÷ 3)

a = 4

Side A = 4

Side B = (a + 1) = (4 + 1) = 5

Side C = (a + 2) = (4 + 2) = 6

Choose the expression that represents a quadratic expression.
O 6x4 - 5x3 + 3x2 -7x - 8
) 5x3 + 3x2 -7x - 8
O 2x2 + 3x - 1
. 3x - 1

Answers

Answer:

3) 2[tex]x^{2}[/tex] + 3x - 1

Step-by-step explanation:

A quadratic expression is an expression involving a squared term

It can be written as y = a[tex]x^{2}[/tex] + bx + c, where a ≠ 0

// note that here b and c can be equal to 0

1) 6[tex]x^{4}[/tex] - 5[tex]x^{3}[/tex]  + 3[tex]x^{2}[/tex]  - 7x - 8 is simply incorrect because you can't write in the previously mentioned form. It is a quartic function, since the unknown variable x in forth degree. It can be written as y = a[tex]x^{4}[/tex] +b[tex]x^{3}[/tex] +c[tex]x^{2}[/tex] + dx + e, where a before [tex]x^{4}[/tex] ≠ 0

2) 5[tex]x^{3}[/tex]  + 3[tex]x^{2}[/tex]  - 7x - 8 is simply incorrect because you can't write in the previously mentioned form. It is a cubic function, since the unknown variable x in third degree.

3) 2[tex]x^{2}[/tex] + 3x - 1 is correct

4) 3x - 1 is incorrect because there is no squared term. You could also say that here a = 0 and write it as y = 0 * [tex]x^{2}[/tex]  + 3x - 1. It is also called a linear function because if you'd draw a graph, it would be a line

Answer:

2x2 + 3x - 1

Step-by-step explanation:

Find the 12th term given the arithmetic sequence: an = -5n +32

Answers

Step-by-step explanation:

step 1. a12 = -5(12) + 32

step 2. a12 = -60 + 32

step 3. a12 = -28.

WILL GIVE BRAINIEST!!! IF UR ANSWER IS RIGHT

Answers

Answer:

-1

Step-by-step explanation:

the slope of this one is y=x-21

in order for it to be perpendicular the sign changes and the slope flips

but because the slope is 1 you just change the slope to -1

Can somebody help??....

Answers

The missing numbers are 27 and 6.. the rule of the sequence is minus 6

Emily puts $10,000.00 into an account which earns 11% interest, compounded quarterly. How
much will she have in the account after 5 years? Round your answer to the nearest cent.

pls hurry it’s for a math test

Answers

s 5on2mllos pnor que creo que esesa cantdadi

ei

Select two ratios that are equivalent to 8:20

Answers

Answer:

The answer is B, C, and D

Step-by-step explanation:

If you simplify each of those ratios, they'll be equivalent

Answer:

B and C

Step-by-step explanation

The first one is B because 2/8 is 4 and 10/20 is 10

The second one is C because 8x3 is 24 and 20x3 is 60

My teacher always says everything you do to one side you have to do to the other :)

Hope this helps! :D

A tank that holds up 10 gallons. when its active, a drain empties water from the tank at a constant rate, when Jada first see the tank, it contains 7 gallons of water. three minute later the tank contains five gallons of water.

At what constant/rate is the amount of water changing in the tank?

Answers

Answer:

-2/3 gallon/minute

Step-by-step explanation:

In three minutes the water volume has decreased by 2 gallons (7 less 5 is 2).  The unit rate of decrease of the amount of water in the tank is thus:

- 2 gallons

------------------- = -2/3 gallon/minute

 3 minutes

Help with this and I will give you the brainiest and you get 10 points

Answers

Answer:

1.-22

2.2

3.48

4.3b

5.1+5v

6.2m+20

7.p=-9

8.x=8

The following table shows the number of fire hydrants in each neighborhood overseen by Fire District 9

Answers

Answer:

15

Step-by-step explanation:

The median,  is just the middle number in a set of numbers.

In this case, our set is: 17, 8, 15, 21, 12.

However, the set must be in increasing order, so the set becomes: 8, 12, 15, 17, 21.

This gives us the median, which is the middle number, to be: 15.

Let me know if this helps!

Answer:

DO NOT PUT 10 PUT 15  OK    

Step-by-step explanation:

I DID THE KHAN

PPEEEEEEEEEEEEEE

I’m stuck on this! I need help

Answers

Answer:

I believe the answer is 20.35 x [tex]10^{4}[/tex].

Step-by-step explanation:

what is the answes please I need it!​

Answers

the answer is -4 so the first one

PLEASE HELP!! ASAP WILL GIVE BRAIN!! AFTER SOLVING QUESTION, GIVE THE REASON(SSS
SAS
ASA
AAS)

Answers

last option:-

∆HOG is congruent to ∆ATC

Reason:- ASA

Hope it helps ⭐⭐⭐

substitution method
a=-b+5
2b+a=11

Answers

Answer:

a = -1

b = 6

Step-by-step explanation:

a = -b + 5

2b + a = 11

2b + a = 11

2b + (-b + 5) = 11

2b - b + 5 = 11

b + 5 = 11

b = 11 - 5

b = 6

2b + a = 11

2(6) + a = 11

12 + a = 11

a = 11 - 12

a = -1

I NEED THE NOE HURRY!!!!!!! i will mark u Brainliest

At most, Kyle can spend $50 on sandwiches and chips for a picnic. He already bought chips for $6 and will buy sandwiches that cost $4 each. Write and solve an inequality to show how many sandwiches he can buy. Use s to represent the number of sandwiches. Write your final answer in a complete sentence.

Answers

The answer is 11. The problem is worked out in the picture.

Which points are reflections of each other across both axes? (-2, 8)and(2, -8) (-7, -1)and(-7, 1) (5, -6)and(-5, -6) (4, -3)and (-3, 4)

Answers

(-2,8) and (2,-8) if you put it on the chart both points should be reflecting each other across (0,0) which is both axes

Solve the following equation: 4(x + 2) - 17 = 35
A: -11
B: 25/2
C: 15
D: 11

Answers

Answer:

D: 11

Step-by-step explanation:

4(x + 2) - 17 = 35

4x+8 - 17=35

4x-9=35

4x=35+9=44

x=44/4=11

the answer is D, the working out is in the photo

Is the point \displaystyle (1,2)(1,2) a solution to the system of equations \displaystyle y-10x=-8y−10x=−8 and \displaystyle y=-8x+10y=−8x+10?

YES
NO

Answers

No because it’s just no
No that point is not

hey can someone please confirm my answer? i got D but it was a guess because i’m not confident in my graphing skills yet

Answers

Correct answer would be c, since the question is only asking for the solution and not the x valued (plotted left and right) it would be where both segments meet

Answer:

the answer is d

Step-by-step explanation:

2r in 3 like terms.


i need helpp!

Answers

Answer:

no se lo ablas

Step-by-step explanation:

Answer:

Can you please rephrase that question I'm not understanding.

Step-by-step explanation:

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