which properties justify the steps taken to solve the system 4x + 3y =25 2x + 5y=19 ​

Answers

Answer 1

Answer: we multiply the second equation by -2. This property is the multiplication property of equality (1).  

Then, we add the two equations generated. (2) addition property of inequality.

Next, we divide both sides of the equation by 13. That is division property of inequality.  

Moreover, we substitute the value obtained for y in the first equation. This is substitution property of equality.  

Then, we simplify

Next, we add +3 to both sides of the equation in order to have an equation with only one side having a variable. That is addition property of equality.  

Lastly, we divide both sides of the equation by 4. This is division property of equality.

Step-by-step explanation:


Related Questions

Grapes are priced at $2.25 per pound. Which of the following equations best represents the cost, c, of buying g, pounds of grapes?

a. c = 2.25g
b. c = g + 2.25
c. g = c + 2.25
d. g = 2.25c

Answers

Answer:

A- c=2.25g

Step-by-step explanation:

If you look at this problem, you will see that the only one that makes since is A. B is incorrect because its pounds and you are trying to find the total. C is incorrect because C stands for cost in the problem and we are trying to find the cost. D is the same explanation as C.

Help rn pls,! Its a math problem

Answers

Answer:

Dont nobody want to help you but thanks for the points lol

Step-by-step explanation:

Solve 25t+5/3<-9 for t.

Answers

Answer:

t<-32/75

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

#

Answer:

t < -32/75

Isolate the variable by dividing each side by factors that don't contain the variable.

can somebody help me plz ??!!

Answers

Answer: number 1

Step-by-step explanation: an example of an irrational

number is pi. it terminate and is a decimal      

solve for x. show your work. check your solution.
3(x+6)-5=16

Answers

Answer:

x=1

Step-by-step explanation:

3(x+6)-5=16

3(x+6)=16+5

3(x+6)=21

x+6=21/3

x+6=7

x=7-6

x=1

3(x+6)-5=16

3(1+6)-5=16

3×7-5=16

21-5=16

16=16

PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!

Answers

42.5 the 3.5x9 rectangle is 31.5. The left triangle is 2. The middle square is 4. And the right triangle is 5. You get the triangles by doing base times higher all divided by two and the rectangle/squares with base times hight

ASAP ! pleaseeee help marking brainliest i beg

Answers

I believe it is one infinite and none

Which of the following best completes this excerpt?
A. equal pay

B.own property

C.a public education

D.vote

Answers

Answer:the answer is vote

The most controversial claim was Right to vote.

What are fundamental Rights?

A group of rights known as fundamental rights have received extensive protection from infringement. These rights have either been determined via the application of due process of law or are expressly stated in a constitution.

Given:

According to declaration of rights and sentiments

It proclaimed that “all men and women are created equal” and resolved that women would take action to claim the rights of citizenship denied to them by men.

The Declaration of Sentiments declares that all men and women are created equal and that each has the unalienable rights to life, liberty, and the pursuit of happiness.

So, the most important claim was Right to vote.

Learn more about fundamental Rights here:

https://brainly.com/question/1261546

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plz help me i will give 14 points!!!

Answers

$7420, I’m pretty sure.

Challenge A large university accepts 60% of the students who apply. Of the students the university
accepts, 35% actually enroll. If 10,000 students apply, how many actually enroll?
students would actually enroll. (Type a whole number.)

Answers

Answer:

man i cant really say

Step-by-step explanation:

if a number n is a multiple of two,then n is even.​

Answers

Answer:

yes any multiple of 2 is even

The selling prices on
distributed with a mean of $221,000 and a standard deviation of $30,000.

Answers

What? I didn’t find a answer sorry

Solve for x and y
A=3y
B=105
C=9x+5
D=2x+10



Answers

Where’s the equation?

Answer:

Where's the equation?

HELP ME PLZ!!!! A bakery sold 48 chocolate cupcakes in a day, which was 12% of the total number of cupcakes sold that day. How many total cupcakes did the bakery sell that day?

Answers

the bakery sold 400 cupcakes that day. 1% of the total cupcakes sold would be 4, so multiplied by 100 to make it 100% would be 400.

400 cupcakes will be sold by the bakery on that day if the percentage of total sales is 12%.

What is the percentage?

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

A set of financial statements with a budgeted amount are created using the percentage-of-sales approach. The predicted sales level for the budget period is calculated by converting each historical cost into a percentage of net sales.

It is given that,

Total number of chocolate cupcakes sold = 48

Let the x be the cupcakes that will be sold by the bakery on that day

According to the given condition, 12% of the total number of cupcakes is 48.

⇒12% of x = 48

⇒(12/100) × x =48

⇒x=(48×100)/12

⇒x=400

Thus, 400 cupcakes will be sold by the bakery on that day if the percentage of total sales is 12%.

Learn more about the percentage here:

brainly.com/question/8011401

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A savings account increases from ​$150 to ​$159. What is the percent increase of the savings​ account?

Answers

Answer:

6%

Step-by-step explanation:

it increased by 9/150 = 0.06 = 6%

Can someone please tell me the property of number 6 it’s urgent

Answers

Answer:

Distributive property

Step-by-step explanation:

Not sure, but I think it is distributive property because you distributive -1/5 to -5x. Hope that helps, thank you !!

Luisa earns $19 for walking 4 dogs. How much would she earn for walking 7 dogs?

Answers

Answer:

$33.25

Step-by-step explanation:

please help me!!!!! its due tonight!!!!!!

Answers

Answer:check explanation below

Step-by-step explanation:

Okay so for Part A: since B is the midpoint of SM, SM=SB+BM. Therefore, you can set them both equal to each other which would be 4x=98.3. You divide both sides by 4 to get the value of x which is 24.575. Now you substitute 24.575 back into 4x and you get 98.3. Since SM=SB+BM, you do 98.3+98.3 and SM=196.6.

Part B: For part b you do the same thing as A to find the values of x y and x. You already know that x=24.575. For Y, since T is the midpoint of DS you can set ST=TD. This means that 123.4=2/5y. When you solve for y you get y=308.5. Lastly, for z since N is the midpoint of MD, MN=ND. So 102=7/10z. When you solve for z you get approximately 145.7. Now you just add them together -- 24.575+308.5+145.7= 478.775.

Part C: NT is half of SM. Since SM is 196.6, NT is 98.3. TB is half of MD. MD is 203.99 so TB is 101.995. BN is half of SD. SD is 246.8 so BN is 123.4

So, NT+TB-BN is 98.3+101.995-123.4 which equals 76.895

in. 2 4 in. 5 in. 3 in.
whats the volume ​

Answers

Answer:

not sure what shape you meant need more info but it should be 360 inches

^3

Step-by-step explanation:

PLEASE HELP, The diameter of a semicircle is 2 meters. What is the semicircle radius

Answers

Answer:

Step-by-step explanation:

d= 2r

therefore the radius is 1

Please help ! I’ll mark you as brainliest if correct

Answers

Answer:

a

Step-by-step explanation:

Taylor opened a savings account with $425. After 2 years, the total interest earned was $10.20. What was the annual interest rate?

Answers

Answer:

R = 1.2%

Step-by-step explanation:

Given the following data;

Principal = 425

Time = 2

Simple interest = 10.20

To find the annual interest rate;

Mathematically, simple interest is calculated using this formula;

[tex] S.I = \frac {PRT}{100} [/tex]

Where;

S.I is simple interest. P is the principal. R is the interest rate. T is the time.

Substituting into the equation, we have;

[tex] 10.20 = \frac {425*R*2}{100} [/tex]

[tex] 10.20 = \frac {850R}{100} [/tex]

Cross-multiplying, we have;

[tex] 1020 = 850R [/tex]

[tex] R = \frac {1020}{850} [/tex]

R = 1.2%

Therefore, the annual interest rate is 1.2 percent.

HELP ME QUICK! ASAP! A stock clerk is arranging a case of 24 bottles of shampoo on a shelf. Each bottle contains 375 milliliters of shampoo. How many liters of shampoo do all bottles contain? Show your work.

PLEASE SHOW UR WORK LIKE HOW U GOT IT

Answers

375x24 is equal to 9000 so 9000 milliliters

Find a. Round to the nearest tenth.

Answers

9514 1404 393

Answer:

  21.8 cm

Step-by-step explanation:

A useful way to write the Law of Sines relation when solving for side lengths is ...

  a/sin(A) = b/sin(B)

Then the solution for 'a' is found by multiplying by sin(A):

  a = sin(A)(b/sin(B)) = b·sin(A)/sin(B)

__

We need to know the angle A. Its value is ...

  A = 180° -75° -31.8° = 73.2°

Then the desired length is ...

  a = (22 cm)sin(73.2°)/sin(75°) ≈ (22 cm)(0.9573/0.9659)

  a ≈ 21.8 cm

_____

I like to use the longest side and largest angle in the equation when those are available. That is why I chose 75° and 22 cm.

A building is 52 meters tall. The building next to it is 50.36 meters tall. What is the difference between the heights of the buildings?

Answers

Answer:

1.64 meters

Step-by-step explanation:

Subtract 52 - 50.36 to find the difference between the heights. You get 1.64 meters.

Hope it helps!

Help please! This is due tomorrow!

Answers

Answer:

2×3=6ft

Step-by-step explanation:

when you multiply on 1 side, you must multiply in the other side

so the length is 3×3=9ft

and the width is 2×3=6ft

Dean is comparing prices on ground beef. Store A is selling 5 pounds of ground beef for $23.49. Store B is selling 8 pounds of ground beef for $36.96. Which store is offering the better deal on ground beef? Show work

Answers

Answer:

Store B

Step-by-step explanation:

First you need to set up an equation for each store

Store A  (you have 5 pounds of something sold at $x per pound. which together totals $23.49)

[tex]5x=$23.49[/tex]

Store B (you have 8 pounds of something sold at $x per pound. which together totals $36.96)

[tex]8x=36.96[/tex]

Then you want to isolate the x for each equation to find the price per pound. You do this by diving each total cost, by how many pounds that you get.

Store A: $23.49/5 pounds= $4.698

Store B: $36.96/ 8 pounds = $4.62

This gives you a price per pound, so B is the correct answer because B is $0.07 cheaper per pound, giving you the better deal.

what's the radius plz help me

Answers

Answer:

i need help to plz its 75932389 i need help its wrong

Step-by-step explanation:

Buffy ate 10 hot dogs every 35 minutes. At that rate, how long, in minutes will it take to eat 6 hot dogs

Answers

Answer:

21 minutes

Step-by-step explanation:

35 ÷ 10 = 3.5

3.5 × 4 = 14

35 - 14 = 21

=21

help please see question below

:)

Answers

Ummmm I think who answerd is right
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