find the solution for the system of linear equations by substitution: y = x. y = 2x - 4

Answers

Answer 1

Answer:

y= 4

Step-by-step explanation:

Answer 2
The answer would be Y=4

Related Questions

A gardener has a circular garden, which he divides into four quadrants. He has four different kinds of flowers, and he wants to assign a flower to each quadrant, so that adjacent quadrants are not planted with the same kind of flower. (Also, the gardener can use the same flower more than once.) How many different gardens are possible?

Answers

Answer:

84

Explanation:

Call the quadrants I, II, III, and IV, counterclockwise, and the kinds of flowers A, B, C, and D.

Start by assigning a flower of kind A to quadrant I.

Then, quadrant II can have flower B, C, or D.

If it is B, then quadrant III can have either A, C, or D. If it is

If quadrant III has A, then quadrant IV can have either B, C, or D. That is 3 different gardens.

If quadrant III has C, then quadrant IV can have either B or D. That is 2 different gardens.

If quadrant III has D, then quadrant IV can either either B or C. That is 2 different gardens.

Those are all the possible different gardens if A is assigned to quadrant I and B is assigned to quadrant II: 3 + 2 + 2 = 7.

Working yet with A in quadrant I but assigning C to quadrant II, you can make the same reasoning as above to get other 7 gardens.

The same with A in quadrant I but D in quadrant II, other 7 different gardents.

In total, you find 7 × 3 = 21 different gardens when flowers of kind A are assingned to quadrant I.

Starting with a flower of kind B in quadrant I, there will be other 21 different gardens. The same for C and D. Then, in total, there are 4 × 21 = 84 different possible gardens.

Answer:

84

Step-by-step explanation:

Quadrants A and C either have the same kind of flower, or they have different flowers.

If quadrants A and C have the same kind of flower, there are 4 ways to choose this flower. There are then 3 ways to choose the flower for quadrant B, and 3 ways to choose the flower for quadrant D, so there are 4 x 3 x 3 = 36 possible ways in this case.

If quadrants A and C have different kinds of flowers, then there are 4 ways to choose the flower for quadrant A, then 3 ways to choose the flower for quadrant C. Then there are 2 ways to choose the flower for quadrant B, and 2 ways to choose the flower for quadrant D, so there are 4 x 3 x 2 x 2 = 48 possible ways in this case.

Therefore, there are a total of 36 + 48 = 84 ways to plant the flowers.

Is the slope Positive, Negative, Zero or Undefined?

Find the slope
What does m=

Answers

Answer:

Positive

Step-by-step explanation: The slope is 4/3

Answer:

slope is positive m=4/3

Step-by-step explanation:

What is the formula (equation) for momentum?

Answers

Answer:

p=mv

Step-by-step explanation:

Answer:

The answer is p = m×v.

Step-by-step explanation:

The formula of momentum is p = m×v where m is the mass of object and v is the velocity of an object.

PLEASE HELP THIS IS URGENT I AM BEING TIMED IF YOU CAN ANSWER THIS CORRECT I WILL CALL YOU BRAINLYES

Change each fraction to a decimal and then to a percentage. Include a fraction in the hundredths place if needed. Do not round. Write the decimal, then the percentage. Separate your answer with a comma and a space.
Example: 0.10, 10%
Example: 0.12 3/4, 12 3/4%

23/40
AS A DECIMAL AND A PERCENTAGE

Answers

Answer:

23/40 = as a decimal: 0.575   As a percentage 57.5%

Step-by-step explanation:

I know this because I used a online site to check my work.

I hope this helps you! :)

plz mark brainliest :)

can a smart person help me out? I really need help with these three questions​

Answers

Answer:

1.= 2.4 Hours

2.= 8 miles per hour

3.= 150 miles per hour

Step-by-step explanation:


Explain why P(AD) and P(DIA) from the table below are
not equal.

Answers

Answer:

P(A) ≠ P(D)

Step-by-step explanation:

P(A|D) = P(AD)/P(D)

P(D|A) = P(AD)/P(A)

The two denominators are not equal, so the quotients cannot be equal.

P(A|D) and P(D/A) are not equal because the total number of A and D are not equal.

What is Probability?

It is a branch of mathematics that deals with the occurrence of a random event.

From the table, we have the following parameters:

n(A) = 8

n(D) = 10

n(A and D) = 2

P(A|D) and P(D|A) are both conditional probabilities, and they are calculated using:

P(A|D)=2/10

=1/5 = 0.2

P(D/A)= 2/8

=1/4

From the above computations, we have:

P(A|D)≠P(D/A)

Hence, P(A|D) and P(D/A) are not equal because the total number of A and D are not equal.

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The product of $7d^2-3d+g$ and $3d^2+hd-8$ is $21d^4-44d^3-35d^2+14d-16$. What is $g+h$?

Answers

Answer:g = 2  and h = -5

Step-by-step explanation:

To find the product with unknown values of variables, multiply the terms and equate the value to the given product.

[tex](7d^{2} - 3d + g)(3d^{2} + hd - 8)[/tex] = [tex]21d^{4} + 7hd^{3} - 56d^{2} - 9d^{3} - 3hd^{2} + 24d + 3gd^{2} + ghd - 8g[/tex]

[tex](7d^{2} - 3d + g)(3d^{2} + hd - 8)[/tex]     = [tex]21d^{4} + (7h-9) d^{3} + (3g-56-3h)d^{2} + (24+gh)d -8g[/tex]   ... (1)

Comparing eq(1) to the product given in question,

-8g = -1

g = 2

24 + gh = 14, sub g =2,

24 + 2h = 14

h = -5

Which expression is equivalent to 3(7x – 5)?

Answers

Answer:

21x-15

Step-by-step explanation:

Use the distributive property:

3×7x=21x

3×5=15

Don't forget the - sign!!!

So,

3(7x - 5) = 21x - 15

Final answer:

The expression 3(7x - 5) using the distributive property is equivalent to 21x - 15, which is obtained by multiplying 3 by each term inside the parenthesis.

Explanation:

The expression 3(7x
- 5) is equivalent to 21x - 15. This process is known as the distributive property, where you multiply the number outside the parenthesis by each term inside the parenthesis. Let's break it down step by step:

Multiply the first term inside the parenthesis by 3: 3 ×7x = 21x.

Multiply the second term inside the parenthesis by 3: 3 ×(-5) = -15.

Combine these results to get the equivalent expression: 21x - 15.

There are 2 green,5 yellow, 6 red,and 7 blue marbles in a bag. Erin picks one marble from the bag without looking. What is the probability she will pick a marble out of the bag that is blue?
a) 7% b) 20% c) 35% d) 54%

Answers

Answer:

c 35%

Step-by-step explanation:

2 green,5 yellow, 6 red,and 7 blue marbles

2+5+6+7 = 20 marbles

P(blue) = blue marbles / total marbles

             = 7/20

              = 35/100

               =35%

1,THE POPULATION OF THREE TOWNS ARE 65,600, 13,400 AND 29,700 APPROXIMATE THE TOTAL POPULATION OF THE THREE TOWNS TO THE NEAREST THOUSANDS
2,REHEMA SPENT 1/8 OF HER SALARY ON TRANSPORT AND 1/4 ON FOOD IF SHE REMAINED WITH SH 80000 WHAT WAS HER SALARY....PLEASE ANSWER MY QUESTION FIRST I WILL MARK U BRAINLIEST

Answers

Answer:

1) 65600+13400+29700=108700

to the nearest thousand it will be 108000

2) 1/8+1/4=3/8

3/8-1=5/8

5/8× U=80000

U=80000÷5/8

U=128000

note that U is unknown

solve where x is a real number

Answers

Answer:

4,-4

Step-by-step explanation:

-4 times -4 equals 16

4 times 4 equals 16

Answer:

x=4

Step-by-step explanation:

square root of 16 and x^2 is 4

what is $5,158 round to the nearest percent

Answers

I think it 5,158.00 round to the nearest percent

Solve the system of equations.

2x - y = 7
x + y = 2

Answers

Answer:

2x - y = 7

x + y = 2

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

3x = 9

x = 3, y = -1

What is 2/15 of 75?
Explain how you did it

Answers

10. 5 x 15 = 75 so ever 1/15 = 5. 2 x 5 = 10.

Answer:

10

Step-by-step explanation:

2/15 of 75

2/15 × 75

2 × 75/15

2 × 5

10

DELLO
How many solutions exist for the given equation?
3(x - 2) = 22 - x
zero
O one
two
infinitely many

Answers

The answer is one solution

The number of solutions for the given equation is one.

Here, we have,

To determine the number of solutions for the equation 3(x - 2) = 22 - x, we can solve it and analyze the result.

Let's simplify and solve the equation step by step:

3(x - 2) = 22 - x

3x - 6 = 22 - x

4x = 28

x = 7

After simplifying, we find that x = 7.

Now, we can analyze the number of solutions:

Since we have found a specific value for x that satisfies the equation, namely x = 7, there is exactly one solution.

Therefore, the number of solutions for the given equation is one.

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The number of triangles created is always two fewer than the number of sides (n) in the polygon.

How can you write this as an expression?

Answers

The number of triangles is (n-2)

















SCENARIO
You and your friend are playing a game with spinners. The two spinners are pictured below. To win each round, you have to land on a number that is bigger than the one your friend lands on. Which spinner would you rather have? Explain your answer.

I need an answer by April 24 ASAP! ;-;

Answers

Answer:

1

Step-by-step explanation:

because on how you show for 2 when you want to win have an accurate meaning of an number

Answer: Either spinner

Step-by-step explanation: I hope this makes sense, as I had the same question :)

I  would choose either spinner because there is an equally likely probability to land on a greater number using  either one.  If you join the same numbers together on spinner 1 (all the 1's together, 2's together,  and 3's together), the section they would make would be the same size as that same number section on spinner 2.  

OR (more detailed one)-

The probability of landing on a number greater than your friend on either spinner is equally likely. 1 and 2 on the first spinner are both 3/8 of the spinner and 3 is 2/8 which is the same ratios as the second spinner. The difference is that on spinner #1, the numbers are split up and spread out from each other (ex. 1,2,3,2,3,1), and in spinner #2 all the 1's, 2's, and 3's are together to make bigger looking chunks. The area of each number is the same on both spinners.

Hope this helps!!!! :):):)

The playground of a school has areas fixed for various activities. One-fifth of the playground is used for students to sit and read. Of the remaining playground, is used for playing soccer. The rest of the playground is used for playing basketball. Which equation represents the part of the playground used for soccer?

Answers

Answer:

2/3* 4/5 = 8/15

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  Please have a look at the attached file below.

Given:

One-fifth (1/5)  of the playground is used for students to sit and read2/3 is used for playing soccer The rest of the playground is used for playing basketball

So assume that the the playground is divided into 5 equal part

=> 1 part is used for students to sit and read or (1/5)

=>  the remaining equal part is 4  or (4/5)

Because 2/3 of the remaining part is used for playing soccer

=> the equation represents the part of the playground used for soccer is:

2/3 of 4/5

= 2/3* 4/5

= 8/15

To find the part of the playground used for soccer, remember one-fifth is for reading, leaving four-fifths. Then, calculate three-quarters of the remaining area for soccer.

To represent the part of the playground used for soccer, we need to consider that one-fifth of the playground is used for students to sit and read. Therefore, the remaining four-fifths of the playground is available for other activities. Since three-quarters of the remaining playground is used for playing soccer, the equation representing the part of the playground used for soccer is:

4/5 * 3/4 = 12/20 = 3/5

Which of the following is the correct representation for a translation 8 units right and 4 units down?

Answers

Answer:

A. (x + 8, y - 4)

Step-by-step explanation:

When something is translated to the right, x goes up, and when something is translated down, y goes down.

Alternatively, eft means down for x and up means up for y.

I’ll mark brainly answer pls!!

Answers

Answer:

A = 120 units^2

Step-by-step explanation:

The area of a parallelogram is

A = bh

The base is 15 and the height is 8

A = 15*8

A = 120 units^2

Answer:

120

Step-by-step explanation:

multiply the height,8, by the length, 15.

Find the exact length of the third side.

Answers

Answer:

The third side is sqrt(5)

Step-by-step explanation:

This is a right triangle so we can use the Pythagorean theorem

a^2+b^2 = c^2  where a and b are the legs and c is the hypotenuse

We know the legs are 1 and 2 and we are looking for the hypotenuse.

1^2+2^2 = c^2

1+4 = c^2

5 =c^2

Take the square root of each side

sqrt(5) = sqrt(c^2)

sqrt(5) =c

The third side is sqrt(5)

Answer:

[tex]\sqrt{5}[/tex] or 2.236

Step-by-step explanation:

The pythagorem theorm states that side 1^2 + side^2 = hypotenuse^2

2^2 + 1^2 = h^2

4+1 = h^2

5 = h^2

[tex]\sqrt{5} = \sqrt{h^{2} }[/tex]

[tex]\sqrt{5} =h[/tex]

In a sample of 150 cars, 18 cars failed a safety inspection. The sampling method had a margin of error of 0.02

What is the interval estimate for the proportion that would fail in the form

(lower limit, upper limit)?

Answers

Answer:  

(Lower limit, Upper limit) = (0.10, 0.14)

(Lower limit, Upper limit) = (10%, 14%)

Step-by-step explanation:  

Total number of cars = 150

Cars that failed the safety inspection = 18

The proportion is given by

p = 18/150

p = 0.12

p = 12%

The confidence interval is given by

p ± margin of error

Where margin of error is 0.02

0.12 ± 0.02

Lower limit = 0.12 - 0.02

Lower limit = 0.10

Lower limit = 10%

Upper limit = 0.12 + 0.02

Upper limit = 0.14

Upper limit = 14%

(Lower limit, Upper limit) = (0.10, 0.14)

(Lower limit, Upper limit) = (10%, 14%)

Answer:

(0.10, 0.14)

Step-by-step explanation:

What is the slope of the line whose equation is 3x+2y=−4 ? Enter your answer in the box.

Answers

Answer:

m/slope = -1.5

Step-by-step explanation:

In a circle with a radius of 6 m, an arc is intercepted by a central angle of 7π/4 radians.
What is the arc length?

Answers

Answer:

The arc length is 52.

determine the zeros & the y-intercept of the function 3(x-3)(x-2)

Answers

Answer:

see explanation

Step-by-step explanation:

Given

y = 3(x - 3)(x - 2)

To find the x- intercepts, let y = 0, that is

3(x - 3)(x - 2) = 0

Equate each factor to zero and solve for x

x - 3 = 0 ⇒ x = 3

x - 2 = 0 ⇒ x = 2

Thus the x- intercepts are x = 2 and x = 3

To find the y- intercept let x = 0 and equate for y, that is

y = 3(0 - 3)(0 - 2) = 3(- 3)(- 2) = 3 × 6 = 18

Thus the y- intercept is y = 18

Given f(x)=-5x+1 find f(6)

Answers

Answer:

f(6)=-29

Step-by-step explanation:

f(6)=-5(6)+1

f(6)=-30+1

f(6)=-29

The value of f(6) is -29.

Given,

f(x)= -5x+1

We need to find f(6).

How do we solve a function at a point?

A function is denoted by f(x) and the point can be a value of x.

The x values are called domain and f(x) is called the output.

Example:

f(x) = x + 2

At x = 1

f(1) = 1 + 2 = 3.

Find f(x) = -5x + 1 at x = 6.

f(x) = -5x + 1

f(6) = - 5 x 6 + 1

     = -30 + 1

     = -29

This means the function f(x) is -29 at x = 6.

Thus the value of f(6) is -29.

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can someone please explain this trigonometry question? uses sin/cos/tan

Answers

Answer:

The answer to your question is below

Step-by-step explanation:

Data

Right triangle

hypotenuse = 24

Opposite side = 15

Adjacent side = ?

Process

1.- Calculate the adjacent side using the Pythagorean theorem.

          hypotenuse² = opposite side² + adjacent side²

-Solve for adjacent side

          Adjacent side² = hypotenuse² - opposite side²

-Substitution

           Adjacent side² = 24² - 15²

-Simplification

           Adjacent side² = 576 - 225

           Adjacent side = 351

-Result

           Adjacent side = 18.73°

2.- Find the value of x°

a) Using sin x

              sinx = Opposite side/Hypotenuse = 15/24 = 0.625

                  x = 38.68°

b) Using cos x

              cos x = Adjacent side/Hypotenuse = 18.73/24 = 0.78

              cos x = 38.68°

c) Using tan x

              tanx = Opposite side / Hypotenuse = 15/18.73 = 0.80

             tan x = 38.68°  

Can you please help me out ASAP plzz

Answers

Answer:

c

Step-by-step explanation:

the answer for this Q is C

5. Celia gets paid biweekly. Her biweekly salary is $1,763.28. What is her annual
salary?

Answers

Answer:

Her annual salary is $45,845.28

Step-by-step explanation:

Multiplication is the process of multiplying. Celia' s annual salary is $48,845.28.

What is multiplication?

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.

Given that Celia's biweekly salary is $1,763.28. Therefore, her weekly salary will be,

Celia's weekly salary = Celia's biweekly salary/ Number of weeks

Biweekly mean once in two weeks, therefore,

Celia's weekly salary = $1,763.28 / 2 weeks

Celia's weekly salary = $881.64 per week

Now, a complete year has 52 weeks, therefore, Celia's annual salary will be,

Celia's annual salary = Celia's weekly salary × Number of weeks in a year

                                   = $881.64 per week × 52 weeks

                                   = $48,845.28

Hence, Celia' s annual salary is $48,845.28.

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what is the surface area of the box if it is scaled up by a factor of 10? surface area is 164, height is 4 in, width is 3 in, length is 10 in.

Answers

Answer:

16400 in ^2

Step-by-step explanation:

For area, we multiply by the scale factor squared

area 2 = sf^2 * area 1

Since the scale factor is 10,

area 2 = 10^2* 164

           = 100*164

           = 16400

Answer:

16,400 in²

Step-by-step explanation:

Ratio of Areas = (Ratio of sides)²

A/164 = 10²

A/164 = 100

A = 16400

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