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

What is the slope of the line ?

Answers

Answer:

slope: 3/1.5

Step-by-step explanation:

You go up 3 and over 1 1/2 like its half then your gonna write 3/1.5

Maggie runs 1/4 of a mile in 1.3 minutes. Olivia runs 2/3 of a mile in 2.9 minutes. Who runs faster?

Answers

Answer:

Olivia-2.25

Hope I helped

The sum of 8 times b and twice g is equal to 32

Answers

That correct number for

A survey shows that three out of every five teenagers at a particular school with cell phones use text messaging. In a group of 90 teenagers, how many would you expect use text messaging? 34 54 56 150​

Answers

Answer:

Out of a group of 90 there would be 54 messaging  

Step-by-step:

messaging is a weird word

In the figure shown what is the value of x?

Answers

Answer:

23 is the right answer hope it's helps you

The value of x from the given congruent triangles is 23 units.

In the figure ΔABC and ΔDEF are given.

What is the congruence theorem?

Triangle congruence theorem or triangle congruence criteria help in proving if a triangle is congruent or not. The word congruent means exactly equal in shape and size no matter if we turn it, flip it or rotate it.

Consider, ΔABC and ΔDEF, we have

AB=DE (Given)

∠BAC=∠EDF (Given)

AC=DF (Given)

So, ΔABC ≅ ΔDEF

We know that, by CPCT

BC=FE

⇒ x-4=19

⇒ x=23 units

Therefore, the value of x from the given congruent triangles is 23 units.

To learn more about the congruent theorem visit:

https://brainly.com/question/24033497.

#SPJ5

(x - 5)2 + (y-(-3))2 = 34 (x - 5)2 + ( + 3)2 = 34 Exercises 12.2 Complete the following: 1. Find the equation of the circle having the given center and ra (a) C(0,0), r= 3 (c) C(4, 3), r = 5 (d) C(2, (b) C(-2.​

Answers

Answer:

Step-by-step explanation:

The general equation of the circle

[tex](x-h)^2+(y-k)^2=r^2[/tex]

Center = c = (h,k) , radius = r

if C = (0,0) , r = 3

The equation will be :

(x-0)^2+(y-0)^2=3^2

[tex]x^2+y^2=9[/tex]

PLS HELP ILL GIVE BRAINLIEST!

Answers

Answer:

C = 55

O = 55

CRA = 64

ORT = 64

T = 61

Answer:

C = 55

O = 55

CRA = 64

ORT = 64

T = 61

Step-by-step explanation:

17 Which is a true statement? Standard 8.3
A All rational numbers are whole numbers.
B All irrational numbers are integers.
C All negative integers are irrational numbers.
D All positive integers are rational numbers.
Whe

Answers

Answer:

D All positive integers are rational numbers.

Step-by-step explanation:

Integers are rational numbers

Sue's bakery sold 850 donuts last week. This week, the number of donuts sold increased 12%. HOW MANY MORE donuts were sold this week as compared to last week

Answers

Answer:

102 donuts

Step-by-step explanation:

12% of 850 is 102, so since 12% more donuts are sold this week, we sold 102 more donuts this week compared to last week.

Hope this Helps! :)

Have any questions? Ask below in the comments and I will try my best to answer.

-SGO

Which is equivalent to square root 8 to the third power

Answers

Answer:

Step-by-step explanation:

IMPORTANT: ∛8ˣ is not the square root of 8³.  ∛ means cube root.

∛x = x^(⅓)

63 over 22 as a decimal

Answers

Answer:

Step-by-step explanation:

63/22 = 2.86363 = 2.86

2.86 you’d want to divide 63 by 22 and round it to the nearest hundredth

(07.03)

An equation is shown below:

5(2x - 8) + 15 = -15

Write the steps you will use to solve the equation and explain each step.

Answers

Answer:

x = 1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right  

Equality Properties

Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

5(2x - 8) + 15 = -15

Step 2: Solve for x

[Subtraction Property of Equality] Subtract 15 on both sides:                   5(2x - 8) = -30[Division Property of Equality] Divide 5 on both sides:                               2x - 8 = -6[Addition Property of Equality] Add 8 on both sides:                                 2x = 2[Division Property of Equality] Divide 2 on both sides:                                x = 1

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x:                                                                                               5(2(1) - 8) + 15 = -15(Parenthesis) Multiply:                                                                                   5(2 - 8) + 15 = -15(Parenthesis) Subtract:                                                                                 5(-6) + 15 = -15Multiply:                                                                                                         -30 + 15 = -15Add:                                                                                                               -15 = -15

Here we see that -15 does indeed equal -15.

∴ x = 1 is the solution to the equation.

Answer: x=1

Step-by-step explanation:

Let's solve your equation step-by-step.

5(2x−8)+15=−15

Step 1: Simplify both sides of the equation.

5(2x−8)+15=−15

(5)(2x)+(5)(−8)+15=−15(Distribute)

10x+−40+15=−15

(10x)+(−40+15)=−15(Combine Like Terms)

10x+−25=−15

10x−25=−15

Step 2: Add 25 to both sides.

10x−25+25=−15+25

10x=10

Step 3: Divide both sides by 10.

10x/10=10/10

x=1

1/3 divided by 3 1/2

Answers

Answer:

2/21

Step-by-step explanation:

line segment AB is perpendicular to line segment CD . How many 90° angles are formed by the intersection?

Answers

Answer:

4 90 degree angles


Inverse of
f(x) = 4x+16

Answers

F-1 (X)= x/4 -4 I think this is it

Is The order that you perform the similarity transformations important?

Answers

Answer:

yes i think it is

Step-by-step explanation:

write the equation of the line that is parallel to y=4x-1 and passes through the point (4.9)

Answers

9514 1404 393

Answer:

  y = 4x -7

Step-by-step explanation:

Rearranging the slope-intercept for equation, we can find the intercept:

  y = mx +b

  y -mx = b . . . . . subtract mx

We know the slope of the parallel line is the same as that of the given line (m=4), so we only need to find 'b'.

  b = 9 -4(4) = -7

The desired equation is ...

  y = mx +b

  y = 4x -7

Do you expect the difference between the 25th percentile and the median (50th percentile) to be Group of answer choices Larger than the difference between median and 75th percentile. We need to see the actual data to answer this question Smaller than the difference between median and 75th percentile. Equal to the difference between median and 75th percentile.

Answers

Answer:

Equal to the difference between median and 75th percentile.

Step-by-step explanation:

xth percentile:

If a measure is said to be in the xth percentile, it means that x% of the measures are smaller than it, and (100-x)% are larger.

Distance between percentiles:

If the difference between two percentiles is the same, the difference between the measures should also be the same.

Median:

The 50th percentile is called median.

In this question:

75th percentile - 50th percentile = 25

50th percentile - 25th percentile = 25

The differences should be equal.

In a right triangle, the hypotenuse has endpoints XY, shown on the graph.

On a coordinate plane, line X Y has points (negative 4, 2), (negative 1, negative 3).

If Z represents the third vertex in the triangle and is located in the second quadrant with integer coordinates, what is the length of YZ?
3
4
5
6

Answers

YZ would be negative 4 to a 2

9514 1404 393

Answer:

  5

Step-by-step explanation:

A graph can be helpful. It shows possible integer coordinates of Z could be ...

  (-1, 2) or (-5, 1)

These have distances 5 and 4√2 from Y, respectively. Of these, only the length YZ = 5 appears on your list of possible answers.

__

The hypotenuse of a right triangle is the diameter of the circumcircle. That is, the right angle vertex (Z) appears on a circle whose center is the midpoint of the hypotenuse. Here, that circle center is C = (-4-1, 2-3)/2 = (-5/2, -1/2). The given point Y differs from this by C - Y = (-5/2 -(-1), -1/2 -(-3)) = (-3/2, 5/2). So, a point with integer coordinates will be 2×(5/2) = 5 units above point Y, which puts it in the 2nd quadrant.

__

Adding any of the 8 combinations (±3/2, ±5/2) or (±5/2, ±3/2) to the circle center coordinates will result in integer coordinates for the right angle vertex. Of these, only the ones listed above are in the second quadrant. A couple are on the y-axis, and two of the possibilities are X and Y. The other two are in the third quadrant.

5th grade math. Correct answer will be marked brainliest.

Answers

This is sad I’m in 8th and don’t know this

The question states:pat needs at least 13 days to make a large order of cupcakes which inequality shows how many ,d, pat needs to make all the ordered cupcakes​



Please help first to answer I'll mark brainliest

Answers

Answer:

D

Step-by-step explanation:

Determine whether the ratios 1:2 and 3:4 are equivalent

Answers

They aren’t hope I helped u

Answer:

They are not equivalent

Step-by-step explanation:

1:2 is the same as 2:4

2:4 does not equal 3:4

The product of two numbers is 42.63. If one number is 21. What is the other number​

Answers

Answer:

21.63 is the other number

Step-by-step explanation:

21 + 21.63 equals 42.63

Answer:

Hi dear. I'm helping you to solve the question and in return you help me with my question.

Step-by-step explanation:

Question : The product of two numbers is 42.63. If one number is 21. What is the other number?

Solution :-

Product of two numbers = 42.63

One of the number = 21

Therefore , the other number = 42.63 ÷ 21 = 2.03

Hope my solution helps you and don't forget to help me with maths questions in return...

Line___is a transversal.

Answers

Answer:

C

Step-by-step explanation:

Line A is Parallel to Line B

Line C intersects Line A and B

Answer:

line C

Step-by-step explanation:

Find the area of a square
with a side length of 3/4

Answers

Answer:

area of square

= side × side

= 3/4 ×3/4

=9/16

What type of angles are these?
Complementary, Supplementary, or Neither
Got It? Do these problems to find out.
-15
85° | 90°
75

Answers

Answer:

a: Neither; b: Complementary

Step-by-step explanation:

Complementary= 90 degrees

Supplementary= 180 degrees

For letter a. the answer is neither because 85 +90= 175 degrees, not 90 or 180 degrees.

For letter b. the answer is complementary because 75 +15= 90 degrees.

Explain your answer

Thank you so much !

Will give brainlst

Answers

Answer:

D

Step-by-step explanation:

The amount of oil and natural gas a given region produces is not always proportionate to the size of its proven reserves. For example, the Middle East contains approximately 50 percent of the world’s proven reserves but accounts for only about 30 percent of global oil production (though this figure is still higher than in any other region). The United States, by contrast, lays claim to less than 2 percent of the world’s proven reserves but produces roughly 16 percent of the world’s oil.

help please asap i will give you a heart if you do

Answers

Answer:

30

Step-by-step explanation:

2(6)=12

3(6)=18

12+18=30

Step-by-step explanation:

its 30 2(6)=12 3(6)=18

30

Marta drew a rectangular poster.

·The length of the rectangle was
2/3 of a yard.

·The width of the rectangle was
3/4 of a yard.

What was the area of Marta’s rectangle?


A. 1/2 yard

B. 5/12 yard

C. 5/7 yard

D. 1 5/12 yards

Answers

Answer:

1/2 yard

Step-by-step explanation:

Multiply the top numbers (the numerators). Which would give you 6.

Multiply the bottom numbers (the denominators). Which would leave you with 12.

Simplify the fraction if needed. 6/12 can be simplified down to 1/2

Simplify
8sqrt48-6sqrt75+7sqrt80

Answers

Answer:

2[tex]\sqrt{3}[/tex] + 28[tex]\sqrt{5}[/tex]

Step-by-step explanation:

= 8 [tex]\sqrt{16}[/tex][tex]\sqrt{3}[/tex] - 6[tex]\sqrt{25}[/tex][tex]\sqrt{3}[/tex] + 7[tex]\sqrt{16}[/tex][tex]\sqrt{5}[/tex]

= 8(4)[tex]\sqrt{3}[/tex] - 6(5)[tex]\sqrt{3}[/tex] + 7(4)[tex]\sqrt{5}[/tex]

= 32[tex]\sqrt{3}[/tex]  - 30[tex]\sqrt{3}[/tex] + 28[tex]\sqrt{5}[/tex]

= 2[tex]\sqrt{3}[/tex] + 28[tex]\sqrt{5}[/tex]

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