Practice elimination by solving the following systems​᠎​​᠎​
-4-2y=-12
4+8y=-24

Answers

Answer 1

Answer:

y = -6

Step-by-step explanation:

-4-2y=-12

4+8y=-24

We can eliminate 4.

4+8y-4-2y = -12-24

Simplify.

6y = -36

Find y.

y = -36 ÷ 6

Simplify.

y = -6

Answer 2

Answer:

-4-2y=-12

4+8y=-24

by elimination method,

-4 - 2y = -12

4 + 8y = -24

---------------

0 + 6y = -36

6y = -36

y = -36/6

y = -6

hope it helps you!!


Related Questions

HELP!!!
The figure inside the parallelogram is a square. Find the area of the shaded region.

HELP!!!The figure inside the parallelogram is a square. Find the area of the shaded region.

Answers

Answer:

Step-by-step explanation:

198

Give three solutions to each inequality
(I will give brainliest)

Give three solutions to each inequality (I will give brainliest)

Answers

Solution 1: 8<6+t ---The simplest solution to this inequality is to subtract 6 from both sides.

Solution 2: 36> s/4 ---The simplest solution to this inequality is to multiply both sides by 4.

What is inequality?

Inequality expresses the relative size of two values. It is written in the form of an equation, such as x > y, where x and y are both numbers, variables, or algebraic expressions.

1. The simplest solution to this inequality is to subtract 6 from both sides. This yields the equation 8-6<t, which can be simplified to 2<t.

2. Another possible solution is to move the constant 6 to the right side of the inequality. This gives the equation 8<t+6, which can be simplified to 8<t.

3. A third solution is to divide both sides of the equation by the coefficient of the variable, which is 1. This yields 8/1<(6+t)/1, which can be simplified to 8<6+t.

Solution 2: 36> s/4

1. The simplest solution to this inequality is to multiply both sides by 4. This yields the equation 36*4>s, which can be simplified to 144>s.

2. Another possible solution is to subtract 4 from both sides. This gives the equation 36>s-4, which can be simplified to 36>s.

3. A third solution is to divide both sides of the equation by the coefficient of the variable, which is 4. This yields 36/4>s/4, which can be simplified to 36>s.

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HELP ME !!
The linear equation c = 6.5n + 1500 models cost c, in dollars, to produce n toys at a toy factory. What is the y-intercept, and what does it mean in this context?

A)The y-intercept is 6.5 and represents the number of toys produced increases by about 6.5 for each $1 increase in cost.
B)
The y-intercept is 1500 and represents the costs $1500 to run the factory if no toys are produced.
C)The y-intercept is 1500 and represents The factory can produce 1500 toys at no cost.
D)The y-intercept is 6.5 and represents the cost increases by $6.50 for each toy produced.

Answers

Answer:

B

Step-by-step explanation:

This is because 6.5n is the slope and the +1500 is the y-intercept. Remember its y=mx+b.

Answer:

B

Step-by-step explanation:

Hope this helps have a great day :)

A recipe for 10 bran muffins calls for 1 cup of flour. The number of muffins that can be made varies directly with the amount of flour used. There are 3 1/2 cups of flour available. How many muffins can be made?

Answers

Answer:

35

Step-by-step explanation:

3 1/2 x 10 =35

make 3 1/2 into an improper fraction: 3 x 2 + 1 = 7/2

make 10 into a fraction: 10/1

find the LCD (least common denominator) for each number:

10/1 = 20/2

7/2 = 7/2

20/2 x 7/2 = 70/2 = 35

:)

Answer:

35

Step-by-step explanation:

For 1 cup of flour, you make 10 muffins. Just by reading the problem, you see that the number of muffins, 10, is 10 times the number of cups of flour, 1.

For 3 1/2 cups of flour, you make 10 times that number muffins.

3 1/2 × 10 = 3.5 × 10 = 35

Answer: 35 muffins

You can also use a proportion.

1 cup flour is to 10 muffins as 3.5 cups flour is to x muffins.

1/10 = 3.5/x

Cross multiply:

1 × x = 10 × 3.5

x = 35

Answer: 35 muffins

Class A has 20 students, Class B has 15 students, if the average weight of the students of 2 classes is 34.2 kg and the ratio of the total weight of the students of class A to that of class B is 11:8, find the average weight of the students of class A​

Answers

Answer:

the average weight of the students in Class A is 25.92 kg.

A coffee shop is running a promotion where a number of free coffee samples are given away each day. The equation above can be used to model the number of free coffee samples, y, that remain to be given away x days after the promotion began. What does it mean that (11, 0) is a solution to this equation?
110xy = 1,210
A) During the promotion, 11 samples are given away each day.
B) It takes 11 days during the promotion to see 1,210 customers.
C) It takes 11 days during the promotion until none of the samples are remaining.
D) There are 11 samples available at the start of the promotion

Answers

Answer:

C

Step-by-step explanation:

First, let us clarify what (11, 0) represent

(x, y) ---> (11, 0)

The values are as followed:

x = 11

y = 0

If the problem states that x is the number of days after the promotion started, then it will be 11 days.

When we assert that it has been 11 days, we rule answers A and D.

If the problem states that y is the number of free coffee samples that remain after 11 days (because x is included in this statement), then it will be 0 samples.

Therefore, the answer will be C. After 11 days of the promotion, there will be 0 samples that are left.

Triangles 1 and 2 are similar. What ratio relates a side length of triangle 1 to the corresponding side length of triangle 2? Fill in thebox to complete the ratio.25.528022.562A8BTriangle 1Triangle 2to 12

Answers

If triangles 1 and 2 are similar then ratio of two sides is 25:52

A triangle is a polygon with edges and three terminals. It belongs to the basic geometric shapes. A triangle containing the angles A, B, and C is referred to by the term ABC.

Any three Euclidean points that are not collinear result in a triangle and a rectangle. In other words, any triangle is exclusively covered by that plane and is contained within that plane.

We know that any two triangles are similar by three axioms:

SSS , AAS , SAS or AAA axiom of similarity.

In the Euclidean plane, every triangle is contained within a single plane, but in higher-dimensional Euclidean spaces, this is no longer the case. This article addresses triangles in terms of geometry, more specifically the Euclidean plane, unless otherwise stated.

ratio of the sides of two triangle are in same ration when the triangles are similar

Now given ratio is 25:52, hence the ratio of the sides will be same.

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When estimating a population mean, you must use t procedures rather than normal curve procedures when:
a. the sample size is less than 15, but not when it's at least 15.
b. the standard deviation is less than 10.
c. the population standard deviation is unknown.
d. the sample standard deviation is unknown.
e. the population standard deviation and the sample standard deviation are different.

Answers

C).The population standard deviation is unknown. It is the correct option. When estimating a population mean, you must use t procedures rather than normal curve procedures when the population standard deviation is unknown.

This is because when the population standard deviation is unknown, we must estimate it using the sample standard deviation. However, this estimation introduces some uncertainty into the calculation, which means that the sampling distribution of the mean is no longer a normal distribution, but rather a t-distribution.

Therefore, we must use t-procedures to account for this uncertainty and obtain more accurate estimates of the population mean. It is important to note that the sample size is also a factor to consider when deciding whether to use t or normal procedures, but it is not the only factor.

The critical value for the t-distribution decreases as the sample size increases, and eventually converges to the critical value of the standard normal distribution when the sample size is very large (typically, at least 30). However, the population standard deviation remains the primary factor in determining whether to use t or normal procedures, regardless of the sample size.

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A rectangle has an area of square unit inside length of 2 1/4 unit find the other side length of the Rectangle

Answers

Answer:

Therefore, the other side length of the Rectangle b = 4 (4/9)

Step-by-step explanation:

Although crucial information that area of the rectangle is missing we can assume it be 10 square units for understanding purposes.

Let the sides of the rectangle be a and b.

Given a = 2 1/4 units

a = 9/4 units

b=?

Area of a rectangle = product of its sides = a×b

⇒ a×b= 10

⇒ 9b/4 = 10

⇒ b= 40/9 = 4 (4/9)

Therefore, the other side length of the Rectangle b = 4 (4/9)

7. call a positive integer an uphill integer if every digit is strictly greater than the previous digit. for example, 1357,89 , and 5 are all uphill integers, but 32,1240, and 466 are not. how many uphill integers are divisible by 15 ?

Answers

Answer:

  6

Step-by-step explanation:

You want to know the number of uphill integers divisible by 15, where an uphill integer is one that has its digits strictly increasing.

Divisible by 15

An integer will be divisible by 15 if and only if it is divisible by 3 and 5. An integer is divisible by 5 if it ends in 5 or 0. An uphill integer cannot end in 0, so must end in 5.

An integer is divisible by 3 if the sum of its digits is divisible by 3

Uphill integers

An uphill integer will have differences between successive digits that are positive integers. In order for the final digit to be 5, the sum of these differences must be 5. Hence we can find uphill integers by considering the "integer partitions" of 5: the sets of positive integers whose total is 5. Those sets would be ...

  {5}, {4, 1}, {3, 1, 1}, {2, 2, 1}, {2, 1, 1, 1}, {1, 1, 1, 1, 1}

Uphill integers will also have digit differences that are some permutation of each of these sets. For example, the digit differences may be {4, 1} or {1, 4}, corresponding to the numbers 45 or 15.

The uphill integers that end in 5 are ...

  5, 45, 15, 35, 25, 345, 145, 125, 245, 235, 135, 2345, 1345, 1245, 1235, 12345

Divisible by 3

We already know each of these is divisible by 5. The ones that have a digit total that is a multiple of 3 are ...

  15, 45, 135, 345, 1245, 12345

There are 6 uphill integers divisible by 15.

please help with my math

please help with my math

Answers

Answer:

B.) \(6^{\frac{1}{2}}\)

Step-by-step explanation:

Use the exponent rule that states \(a^{\frac{1}{m}}=\sqrt[m]{a}\).  For this problem, let

a=6

m=2

So,

\(\sqrt6=6^{\frac{1}{2}}\)

What does x equal in these two equations?

-12x + 4 = 100

X - 39/4 = -12

Answers

Answer:

First Question: x = -8

Step-by-step explanation:

-12x + 4 = 100

firstly we subtract 4 from 4 which will remove it from the equation and then we also subtract 4 from 100.

Now the equation will be -12x=96

Then we divide -12x by -12 to figure out the value of x and we also dive 96 by -12.

-12x/-12= 96/-12

Answer is x = -8

Hopefully that helped :)

-12x+4=100
X=-8

X-39/4=-12
X=-9/4

Please help me? This is half of the other part I posted <

Please help me? This is half of the other part I posted &lt;

Answers

nonlinear!!

hope this helps

Please help
Find the value of x
Find the measure of the two marked angles

PLEASE ALSO FIND X

(Mathematics)

 Please help Find the value of xFind the measure of the two marked anglesPLEASE ALSO FIND X(Mathematics)

Answers

On solving the provided question, by properties of parallel lines we got to know that -  1 - A  2 - C  3 - B  4 - D

what is alternate exterior angles?

When two or more lines cross the intersection line, alternate exterior angles result. These angles are created on a number of sides outside the transverse lines. Any two parallel lines that cross one another create two angles with the horizontal line. In the area between the parallel lines, interior angles are formed, while alternate exterior angles are formed in the area outside the parallel lines.

Matches are -When two parallel lines cross one other, the horizontal line is divided into two angles. Interior angles develop between the parallel lines, whereas alternative outside angles develop outside the parallel lines.

1 - A

2 - C

3 - B

4 - D

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The wheels on Jackson’s dirtbike measures 19 inches in diameter how many revolutions will the wheel make when Jackson rides for 500 feet use 3.14 for pie

Answers

To solve this problem, we need to use the formula:

Number of revolutions = Distance traveled / Circumference of wheel

First, we need to find the circumference of the wheel using the formula: Circumference = diameter x pi

To calculate the number of wheel revolutions for Jackson's dirtbike, we'll need to use the diameter of the wheel and the distance he rides. Here's a step-by-step explanation:

1. Convert the diameter of the wheel (19 inches) to feet: 19 inches × (1 foot / 12 inches) = 1.583 feet

2. Calculate the circumference of the wheel using the diameter and the value of pi (3.14): Circumference = Diameter × pi = 1.583 feet × 3.14 = 4.97062 feet

3. Now, divide the total distance ridden (500 feet) by the circumference of the wheel to find the number of revolutions: Revolutions = Distance / Circumference = 500 feet / 4.97062 feet ≈ 100.59 revolutions

The wheel on Jackson's dirtbike will make approximately 100.59 revolutions when he rides for 500 feet.

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If the number of bacteria on the surface of your phone triples every hour and can be described by the exponential function: f(x)=1000x3^x
, complete the table of values to show how much bacteria is on your phone after 4 hours.

If the number of bacteria on the surface of your phone triples every hour and can be described by the

Answers

Answer: 81,000

Step-by-step explanation:

We can solve this by using the formula given.

If f(1)=1000x3^1, then 1,000x3=3,000

If f(2)=1000x3^2, then 3^2=9 and 1000x9=9000,

and so on,

Now, f(4) will equal 1000x3^4, and 3^4 is 3x3x3x3, which is 9x9 or 9^2, which would be equal to 81, and 81x1000=81,000

To complete the table of values for the exponential function f(x) = 1000*3^x, we can evaluate the function for x = 0, 1, 2, 3, and 4, since we are interested in the number of bacteria on the phone after 4 hours.

x f(x)

0 1000

1 3000

2 9000

3 27,000

4 81,000

Therefore, after 4 hours, there will be 81,000 bacteria on the surface of the phone, assuming the number of bacteria triples every hour and can be described by the exponential function f(x) = 1000*3^x.

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4.
Clients are served in a process with two resources. The
capacities of the resources are 1.1 and 0.93 clients per hour.
Demand occurs at the rate 0.75 clients per hour.
What is the implied utilizati

Answers

Answer:

Step-by-step explanation:

The implied utilization of the resources in the process can be calculated by dividing the demand rate by the total capacity of the resources. In this case, the total capacity is 1.1 + 0.93 = 2.03 clients per hour. Therefore, the implied utilization is 0.75 / 2.03 = 0.369 (or 36.9%).

The implied utilization represents the proportion of the available capacity that is being utilized to meet the demand. In this scenario, approximately 36.9% of the total capacity is being utilized to serve the clients. This indicates that there is still some unused capacity available in the process.

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The table shows the population of a small town over time. The function P = 10,550(1. 1)x models the population x years after the year 2000. A 2-column table with 5 rows. The first column is labeled years after 2000, x with entries 0, 3, 4, 7, 10. The second column is labeled population, P with entries 10,5000; 14,000; 15,500; 20,500; 27,000. For which year would this model most likely be sufficient to make a prediction of the population? 1950 2005 2025 2050.

Answers

The population model is most sufficient for 2005 because 2005 is the closest to 2000

The population function is given as:

\(P(x) = 10550(1.1)^x\)

From the question, we understand that the population model is for years after 2000.

This means that the model cannot be used for the year 1950; because 1950 is before 2000.

The model can be used for years 2005, 2025 and 2050.

However, it is most sufficient for 2005 because 2005 is the closest to 2000, and the population model can change with time

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Answer:

B!

Step-by-step explanation:

Suppose you flip a coin and keep a record of the results. In how many ways could you obtain at least one head if you flip the coin seven times

Answers

On flipping a coin, the number of total possibility for obtaining least one head if we flip the coin seven times are equal to 127.

We have an experiment for flip a coin and keep a record of the results.

Number of total possible outcomes on flipping a coin = 2 = { H, T}

Number of trials or a coin is flipped = 7

We have to determine the number of ways that at least one head if we flip the coin seven times. When we flip a two-sided coin n times, there are \(2^ n\) possible outcomes. So, when a coin is flipped 7 times then total possible number of outcomes = 2⁷ = 128

Let's consider an Event A : getting at least one head in seven flips

Complement of this event is getting no head and it is denoted by \(A^ c =\){ T T T T T T T }

and this event will be occur in one way only. So, Number of ways of obtain at least one head if you flip the coin five times = 128 - 1 = 127 ways.

Hence, required value is 127 ways.

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What is \(5.4 x 10 4\) 4 to the second power
Write in standard form

Answers

Answer:

\(5.4 \times {10}^{4} = 5400\)

Step-by-step explanation:

Because the exponent for the 10s term is positive we need to move the decimal point 4 places to the right:

One important use of the regression line is to do which of the​ following?
A. To determine the strength of a linear association between two variables
B. To determine if a distribution is unimodal or multimodal
C. To make predictions about the values of y for a given​ x-value
D. Both A and B are correct

Answers

Answer:

C. To make predictions about the values of y for a given​ x-value (I THINK)

You invest an initial $300 in an account that has an annual interest rate of 4%, compounded quarterly. How much money will you have in the account after 10 years? Round your answer to the nearest whole number.

Answers

Answer:

Step-by-step explanation:

The formula you will want to use for this is one that allows a certain number of compoundings of the interest per year. This is a specific one for compounding continuously, and there is one for finding simple interest. Here is the one we want:

\(A(t)=P(1+\frac{r}{n})^{nt}\) where A(t) is the amount in the account after the compounding occurs over the number of years specified, P is the initial amount in the account, r is the interest rate in decimal form, n is the number of times per year the compounding occurs, and t is the amount of time the money is in the account in years. For us:

P = 300,

r = .04,

n = 4 (quarterly means 4 times), and

t = 10

Filling in:

\(A(t)=300(1+\frac{.04}{4})^{(4)(10)}\) and

\(A(t)=300(1+.01)^{40}\) and

\(A(t)=300(1.01)^{40}\) and

A(t) = 300(1.488863734) so

A(t) = $446.66 or $447

Answer: rounded it to $447

Step-by-step explanation: i think :)

help please!! ill mark brainliest

help please!! ill mark brainliest

Answers

Answer:

∠ B = 54°

Step-by-step explanation:

The angles are supplementary, that is they sum to 180° , then

7x + 14 + 5x - 26 = 180 , that is

12x - 12 = 180 ( add 12 to both sides )

12x = 192 ( divide both sides by 12 )

x = 16

Then

∠ B = 5x - 26 = 5(16) - 26 = 80 - 26 = 54°

FIND THE GCF, THEN FACTOR THE EXPRESSIONS
if you can just tell me how to write the expression with the gcf i can do the rest !! pleaseeee help

FIND THE GCF, THEN FACTOR THE EXPRESSIONSif you can just tell me how to write the expression with the

Answers

Answer:

Step-by-step explanation:

1

3

3(x² + 1)

2

6

6(3y² - 1)

3

m²(n² + 3)

4

6

6(x³ + 6)

5

6

6(x³ + 3x² + 4)

6

5

5(a³ + 5a² - 7a + 4)

7

8

8(2m³ + 3m² + 2)

8

5

5(5x²y + 3xy² + 6)

9

16x

16x(2x^4 + 4x³ + 1)

10

7xy

7xy(3x²y - x + 6)

11

-a^4

-a^4(3a² + 4a + 1)

12

4xy

4xy(x - 4xy + 5y)

13

6y

6y(-4x² + x²y + 5y)

14

2

2(9a² - 18a²b² + 22b²)

15

-3xy

-3xy(5x²y + 15xy + 11y)

16

4ab

4ab(ab^6 - 8ab^5 + 4b)

17

17xy

17xy(x - 2)

18

n

n(3m² - 39m²n - 13n)

19

5t

5t(-8t + ts + 20s²)

20

p

p(6p³q + qr - 3r)

does anyone no how to do this question on math very hard plz explain how to get the answer will mark brailiest 5 star and thx

does anyone no how to do this question on math very hard plz explain how to get the answer will mark

Answers

Answer:

Answer is B

Step-by-step explanation:

3x + 5x - 1 expression

Answers

Answer:

8x - 1

Step-by-step explanation:

Combine like terms. 3x and 5x are like terms.

3x + 5x -1 = 8x - 1

someone please help asap i’m stuck

someone please help asap im stuck

Answers

Answer:

no

Step-by-step explanation:

no

Name:
15. AACE~AABD with side lengths as labeled and BD = 50, CE = 70

a. Find AC.
b. Find the perimeter of A ABD.
c. Find the area of AACE.

Name:15. AACE~AABD with side lengths as labeled and BD = 50, CE = 70a. Find AC.b. Find the perimeter

Answers

Answer:

please mark as brainliest

Name:15. AACE~AABD with side lengths as labeled and BD = 50, CE = 70a. Find AC.b. Find the perimeter
Name:15. AACE~AABD with side lengths as labeled and BD = 50, CE = 70a. Find AC.b. Find the perimeter

10 1/4 divided by 2 1/2

Answers

Answer: 4.1

Step-by-step explanation:

Answer:

4 1/10

hope this helps have a good day :)

10 1/4 divided by 2 1/2

Anyone know how to do this

Anyone know how to do this

Answers

Answer:

77

Step-by-step explanation:

3+2*49-24

3+98-24

101-24

77

Good luck

Answer:

77

Step-by-step explanation

3+2X7^2-4X6

First complete the exponent

3+2X49-4X6

Then multiply

3+2X49-24

Multiply

3+98-24

Calculate the rest of the equation

101-24=77

Therefore the answer is 77.

Please don't be mad if this is incorrect

Also the x's are multiplication symbols and NOT variables

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