Which of the following gives a valid reason for using the given solution method to solve the system of equations shown?
Equation : 4x - 5y = 4
Equation il: 2x + 3y = 2
A Elimination, a coefficient in Equation 1 is an integer multiple of a coefficient in Equation II.
B. Elimination, a coefficient in Equation II is an integer multiple of a coefficient in Equation I.
C. Substitution, Equation I can be solved for x in one step by dividing both sides by 4.
D. Substitution, Equation Il can be solved for x in one step by subtracting 3y from both sides.

Answers

Answer 1

Answer:

A . Elimination, a coefficient in Equation 1 is an integer multiple of a coefficient in Equation II.

hope it is helpful...


Related Questions

What is the slope of the line below? If necessary, enter your answer as a
fraction in lowest terms, using the slash (/) as the fraction bar. Do not enter
your answer as a decimal number or an equation. (-6,3) (12,6)

Answers

Answer:

6/1

Step-by-step explanation:

the difference between 12 and -6 is 18 and the difference between 6 and 3 is 3...18/3 is 6/1

Nia recorded her science and math scores. The measures of center and variation for each score are shown in the table below.

Measures of Center and Variation
for Nia’s Science and Math Scores

Science
Math
Mean
64
58
Median
60
60
Mode
62
62
Range
8
50
Mean Absolute Deviation
2.4
14.4

Which inferences can be made when analyzing the data summary in the table? Select three choices.
Her mean science score is higher than her mean math score.
She prefers science over math.
There is more variation in her math scores.
Her science scores are more spread out than her math scores.
Her median scores are the same for each subject.

Answers

Answer:

1, 3, 5

You can tell by looking that her science mean is greater than her math mean.

The higher range number means that her scores in math are more varied and spread out than her science scores.

You can tell by looking that the median scores are the same.

Step-by-step explanation:

Answer:A , C , E

Step-by-step explanation:

i got it from the dude above me

2 3/4 + 5 1/2

PLEASE I NEED ANSWER URGENT

Answers

the answer is 8 1/4!!
Answer:
The answer is 8 1/4

find the measures of the interior angles 49 degrees

Answers

Answer:

x+49+90=180sum of interior angle of triangle

x=180-139=41 is your answer

I think it is C so yup

What is the x intercept of the function graphed below?

Answers

Answer:

B (2,0)

Step-by-step explanation:

The line crosses the x axis at 2.

(2,0) It’s the only point where the line crosses the x axis

[tex]\frac{t}{7}= 13\\[/tex]

Answers

Answer:

91

Step-by-step explanation:

Step 1: Multiply both sides by 7. T/7 = 13 (t/7) = (13) x 7  t = 91

what’s the question for this?

Bart uses 3/12 cup milk to make muffins. Write a fraction that is equivalent to 3/12 pls help out!

Answers

Answer:

1/4

Step-by-step explanation:

Answer: 1/4

Hope that helps :)

1. The cost of a fish dinner for a restaurant is $7.95. If they sell it for $11.95, what is the percent markup?

Answers

Answer:

the answer will be

50.3144 %

A circle has a central angle of 6 radians that intersects an arc of length 14in

Answers

c=2pir

arclength/circumference=centralangle/2piradians

14/2pir=6/2pi
7/pir=3/pi
times pir both sides
7=3r
divide by 3 both sides
7/3=r

well,
um
the answer is B

75% of something = 342
Need answer quick

Answers

The answer is 456

This the answer 456

find the volume of the cylinder pictured below use 3.14 for pi give your answer rounded to the nearest tenth height 21ft diameter 10ft

Answers

Given:

Height of the cylinder = 21 ft

Dimeter of the cylinder = 10 ft

To find:

The volume of the cylinder.

Solution:

We have,

Dimeter of the cylinder = 10 ft

So, radius is half of diameter, i.e., 5 ft.

Volume of the cylinder is

[tex]V=\pi r^2h[/tex]

Where, r is the radius and h is the height.

Putting [tex]\pi=3.14[/tex], r=5 and h=21, we get

[tex]V=(3.14)(5)^2(21)[/tex]

[tex]V=(3.14)(25)(21)[/tex]

[tex]V=1648.5[/tex]

Therefore, the volume of the cylinder is 1648.5 cubic ft.

The pairs of numbers below represent the price of different
quantities of books at 4 stores.
Which pair of numbers represents a proportional relationship?
o 4 books for $24,8 books for $40
o 5 books for $25, 6 books for $36
o 2 books for $14, 5 books for $35
o 3 books for $15, 7 books for $28

Answers

Answer:

Option C: 2 books for $14, 5 books for $35

Step-by-step explanation:

A proportional relationship between two quantities would always have a constant of proportionality. Thus,

Constant of proportionality, k = y/x

In this case,

x = quantity of books

y = price

Let's see which pair will have a constant of proportionality:

Option A: 4 books for $24,8 books for $40

24/4 = 6;

40/8 = 5.

No constant of proportionality.

Option B: 5 books for $25, 6 books for $36

25/5 = 5

36/6 = 6

No constant of proportionality.

Option C: 2 books for $14, 5 books for $35

14/2 = 7

35/5 = 7

Constant of proportionality, k = 7.

This pair represents a proportional relationship.

Option D: 3 books for $15, 7 books for $28

15/3 = 5

28/7 = 4

No constant of proportionality.

Determine whether the sequence is geometric. If so, find the common ratio. 3.0, 6.0, 12.0, 24.0

Answers

Answer:

The sequence is geometric and the common ratio is 2

Step-by-step explanation:

A sequence is geometric if each term  (after the first one) is equal to the term before it times some constant number, called the 'common ratio'.

Examples:  1, 2, 4, 8, 16, ... has a common ratio of 2 because 2*2 = 4, and 4*2 = 8, and so on.

                 Also, -->  4, 2, 1, 1/2, 1/4/ 1/8, ... has a common ratio of 1/2 because

4 * 1/2 =  the next term 2, and 2 * 1/2 = the next trem 1/4, and son on.

In this case, 3 * 2 = 6

                    6 * 2 = 12

                    12 * 2 = 24

The sequence is geometric and the common ratio is 2

Explain how you would combine like terms and use properties of operations to solve the inequality 5(2t + 3) - 3t < 16

Answers

Step-by-step explanation:

step 1. 10t + 15 - 3t < 16 (distributive property)

step 2. 7t +15 < 16 (combine like terms)

step 3. 7t < 1 (subtract 15 from both sides)

step 4. t < 1/7 ( divide both sides by 7.

a group of six friends went out fir dinner and equally split the dinner bill. if they each paid 24.70 what was the dinner bill?​

Answers

If six friends each payed $24.70 then

6 * 24.70 = 148.20

The dinner bill in total was $148.20.

Emily the blacksmith blends one alloy of silver that is 45% silver and another that is 95% silver. To the nearest ton, how much of each alloy is needed to make 139 tons of a 70% silver alloy?

please answer​

Answers

Answer:

69.5 tons of Alloy 1 (of 45% silver) and 69.5 tons of Alloy 2 (of 95% silver) is needed to make 139 tons of 75% silver alloy

Step-by-step explanation:

Given

[tex]Alloy\ 1 = 45\%[/tex]

[tex]Alloy\ 2 = 95\%[/tex]

Required

How much of each alloy is needed for 70% silver alloy 139 tons

Let the amount of alloy 1 needed be x and the amount of 2 needed by y.

So:

[tex]x + y = 139[/tex]

Make y the subject

[tex]y = 139 - x[/tex]

The percentage of each needed is represented as:

[tex]45\% * x + 95\% * y = 139[/tex]

[tex]45\% * x + 95\% * y = 70\% * 139[/tex]

[tex]0.45x + 0.95y = 0.70 * 139[/tex]

[tex]0.45x + 0.95y = 97.3[/tex]

Substitute 139 - x for y in the above equations

[tex]0.45x + 0.95*(139-x) = 97.3[/tex]

[tex]0.45x + 0.95*139-0.95*x = 97.3[/tex]

[tex]0.45x + 132.05-0.95x = 97.3[/tex]

Collect Like Terms

[tex]0.45x -0.95x = 97.3-132.05[/tex]

[tex]-0.50x = -34.75[/tex]

Make x the subject

[tex]x = \frac{-34.75}{-0.50}[/tex]

[tex]x = 69.5[/tex]

Recall that:

[tex]y = 139 - x[/tex]

[tex]y = 139 - 69.5[/tex]

[tex]y = 69.5[/tex]

This implies that:

69.5 tons of Alloy 1 (of 45% silver) and 69.5 tons of Alloy 2 (of 95% silver) is needed to make 139 tons of 75% silver alloy

If the points on a graph of a linear function are (-2,10 (0,4) (2,-2) and (4,8) what is the y-intercept

Answers

Answer:

i think 5

Step-by-step explanation:

The y-int will be when x=0. Which I’m this case is 0,4. So the y-int is 4

The cost c varies directly as the numbers n of pencils is written as A. c = kn B. k+ cn C. n = k/c D. c =k/n

Answers

Answer:

A. c = kn

Step-by-step explanation:

The cost c varies directly as the numbers n of pencils

This means that c is a multiplication of a constant by n, which is the number of pencils. So the equation for the cost is given by:

[tex]c = kn[/tex]

In which k is the constant of proportionality, that is, the cost of each pencil. So the correct answer is given by option A.

Cherry Avenue Park is in the shape of a rectangle. What is the area, in square

miles, of Cherry Avenue Park?

Answers

Answer: a rectangles area is length x width. You need to find the numbers that represent the length and the width and multiply them

Step-by-step explanation:

PLZ ANSWER QUICKLY! POINTTTSSS POINTTTSS! THX
If f(x) = 3(x + 4), find f(2).

729
243
81
18

Answers

Answer:

18

Step-by-step explanation:

We just substitute x

3(2+4)=6+12=18

Find the value of x
A.15
B.25
C.35
D.45

Answers

Answer:

B

Step-by-step explanation:

Tom buys 4 tickets for a concert. The total cost is $85,60. How much does he pay
for each ticket?

Answers

Answer:

$21.40 for each ticket

Step-by-step explanation:

Answer:

$21.1

Step-by-step explanation:

[tex]-(x+9)2=64[/tex]

Answers

-(x+9)2=64
(-x-9)2= 64
-2x-18= 64
+18. +18
-2x = 82
/-2. /-2
x= -41

What are the sine and cosine of 4pi/3?

Answers

Answer:

-0.479

Step-by-step explanation:

[tex]sin(cos(4 \frac{\pi}{3} ) = - sin( \frac{1}{2} ) = - 0.479[/tex]

Answer:

Answer is B : -1/2

Step-by-step explanation:

correct on edge

The first step in analyzing a transaction is to determine:
O A. if the account balance will increase or decrease.
OB. the accounts that are involved.
O C. the type of accounts that are involved.
OD. which accounts are to be debited and credited.

Answers

Answer:

B. the accounts that are involved.

Step-by-step explanation:

Financial accounting is an accounting technique used for analyzing, summarizing and reporting of financial transactions like sales costs, purchase costs, payables and receivables of an organization using standard financial guidelines such as Generally Accepted Accounting Principles (GAAP). Examples of financial statements includes Balance sheet, cash-flow and income statement.

On the other hand, managerial accounting also known as cost accounting is an accounting technique focused on identification, measurement, analyzing, interpretation, and communication of financial information to managers for better decisions making and pursuit of the organization's goals.

The first step in analyzing a transaction is to determine the accounts that are involved. Since a company would have more than one transaction type, it is very important to determine what account is involved in the transaction process such as sales, purchase of inventory, payment of employee salaries and other types of expenses.

A stainless steel patio heater is a square pyramid. The length of one side of the base is 23.6. in. The slant height of the pyramid is 90.9. in. What is the height of the​ pyramid?

Answers

Answer:

Step-by-step explanation:

The height of the heater is about 89.3 in.

You can solve this problem with the Pythagorean Theorem. The base is a square. So half way across the middle will the right under the tip of the pyramid. We can use the measurement with the slant height to write and solve the equation below.

23.8^2 + x^2 = 90.1^2

x will be about 89.3.

Mark brainliest please if the answer is correct

Identify the range of the function shown in the graph.

Answers

Answer:

Identify the range of the function shown in the graph.

Answer:

range=(10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10)

Why is the value of x to the nearest tenth?

Answers

Answer: 9.4

Step-by-step explanation:

What value of x and y will make the polygon a parallelogram
105°
V
15x

Answers

Answer

60

Step-by-step explanation:

105+15= 120

180-120=60

I think this is the correct answer but I dont know

What is the equation for g(x) =

I need help ASAP I WILL GIVE BRAINLIEST

Answers

Answer:

g(x) = math is a buncha bull :)

Step-by-step explanation:

Other Questions
Which of the following revisions would you make to keep the meaning of the sentence and use the active voice?The difficult sonata was played by the talented pianist. A The difficult sonata played the talented pianist. B The difficult pianist was played by the talented sonata. The talented pianist played the difficult sonata. D No change. It is already in active voice. plity -2 -6.452 - 6+(-3.252). Rewrite the sentences to make them more interesting using different sentence forms (simple, compound, complex, compound-complex.That was the most boring class in the world. I fell asleep. The teacher talked so slowly. 10. An item is originally priced at $75. It is marked down 30% the first week but still does not sell. It is thenfurther discounted 20% and sells to a nice couple from Chicago.a) At what price did the item finally sell for?b. If sales tax is 9 %%, how much did the couple pay altogether for the item? Complete the following sentence with the correct choice below:"Queen Elizabeth estO A. une chanteuse.O B. une reine.O C. une musicienne.O D. une femme politique. what is the answer of x(x) Thomas Jefferson goal was toA. Build factories B. Build a better USAC. Reduce the size of the government D. Close the national bank Select all expressions equivalent to (2^-3.2^4)^-2 H WELDOEBEBSBDB Anything helps guys I need the smarties here three decimal numbers that when rounded to the nearest hundredths place will round to the number 6.75. who is currently the president? Henry I set up juries to deal with arguments over land. Over time, two kinds of juries developed in England. Name the two types of juries and explain each jury's purpose. what is the value of x in the equation 1/3x + 7 = -2 Find the 59th term of the arithmetic sequence 26, 17, 8, ...26,17,8,... Study the editorial cartoon Mars Probe by Mike Keefe. On another planet, 3 aliens are playing baseball, and one holds a baseball bat at the ready position. A space vehicle is flying above them with "Mars Probe" written on it. One alien says "Get ready! Here comes another one!" How does the alien with the baseball bat contribute to the effectiveness of the political cartoon? It suggests that aliens are like people because they play baseball, a human sport. It uses humor to show that unknown factors keep damaging the probes humans send. It shows how to cope with the surface of Mars, which is rocky and full of craters. It exaggerates the size of the bat in relation to the Mars probe in the cartoon. Jolianne worked half as many hours as Andrew. Jolianne makes $10 per hour and has saved $27. Andrew makes $8 per hour and has no money saved. After getting paid, they have the same amount of money.Andrew claims that only his table and equation are correct, but Jolianne claims that both tables and equations are valid. Which statement regarding their claims is true?A.) Andrew is correct because t cannot be used to represent the number of hours Jolianne worked.B.) Andrew is correct because Jolianne worked half as many hours as he did and he did not work twice as many hours as she did.C.) Jolianne is correct because if one lets t = hours Andrew worked, then his equation is valid. If one lets t = hours Jolianne worked, then Andrew worked twice as many so her equation is valid, too.D.) Jolianne is correct because when solving t in her equation, t = hours Jolianne worked, and when solving for t in Andrews equation, t = hours Jolianne worked so they are equal. Which statement describes the Richter scale?A. It cannot account for fault movement during an earthquake.B. It measures large earthquakes far from the seismograph.C. It estimates the total energy released from an earthquake.D. It increases in magnitude as amount of damage increases. Two light bulbs are 2.0 m apart. From what distance can these light bulbs be marginally resolved by a small telescope with a 4.50 cm. Assume that the lens is limited only by diffraction and = 600 nm If two roan cattle were crossed, what percent of the offspring would you expect to have a roan coat? Fill in the blank text field 1 Please help! I need an explanation also because I am currently having trouble