In the piece-wise function graphed below, which is the correct equation for when − 2 ≤ x ≤ 2

y=-2x+2

y=-1/2x+2

y=-2x+4

y=-1/2x+4

A system of linear equation consists of two or more linear equations with the two or more same variables. Such equations are called system of equations (or) simultaneous equations (or) a pair of equations.

Example:

x + y = 5 is one linear equation.

2x – y = 4 is another linear equation.

But x + y = 5, 2x – y = 4 together they form system of linear equation.

The solution to a  system of linear equations in two variables is any ordered pair that satisfies each equation independently.

Answer:

A liner equation is an equation between two variables that gives a straight line when plotted on a graph.A system of linear equation consists of two or more linear equations with the two or more same variables.

Step-by-step explanation:

x + y = 5 and 2x – y = 4 together they form a linear equation.

Also please give me  Brainliests.

Answer:

Step-by-step explanation:

a single

a lone

a solitary

a unit of

Answer:

Step-by-step explanation:

The mean means the average of the numbers.

The mean will be [tex]\frac{25000\times5 + 27000\times3 + 34000}{5 + 3 + 1} = \frac{240000}{9} = 26666.666666666[/tex].

The differences of the earnings from the mean are 1666.67, 26997.33, 33997.33.

Squaring the numbers we get, 2777788.89, 728855827.13, 1155818447.12.

We need to find the mean of the above numbers to get the standard deviation.

Thus, the standard deviation is [tex]\frac{2777788.89\times5 + 728855827.13\times3 + 1155818447.12}{9} = 372919430.33[/tex].

Answer:

4  (9 x + 11) is an equivalent expression for the perimeter that shows the side length of the square is  (9 x + 11).

Step-by-step explanation:

Here, given The perimeter of the square  = (36 x+44)

Now,as we know :

PERIMETER OF SQUARE = 4 x ( SIDES)

Simplifying the perimeter expression.

Take 4 common out of the expression (36 x+44), we get:

(36 x+44) =  4 (9 x + 11)

⇒ Perimeter of the square  =  4 x  (9 x + 11)

⇒4 x ( SIDES) = 4 x (9 x + 11)

⇒ Each Side = (9 x + 11)

Hence, 4 x (9 x + 11) is an equivalent expression for the perimeter that shows the side length of the square is  (9 x + 11).

Answer:

Facts

Step-by-step explanation:

Answer:

18+3r

Step-by-step explanation:

-2+5(4+3r)

-2+5×4+3r

-2+20+3r

=18+3r

Answer:

Step-by-step explanation:

[tex]i^{22}=i^{2*11}=(i^{2})^{11}=(-1)^{11}=-1[/tex]  

Answer:

i^22 = -1.

Step-by-step explanation:

i^22 = (i^4)^5 * i^2

Now i^2 = -1  ( by definition)

and i^4 = i^2 * i^2 = -1 * -1 = 1

So i^22 = 1^5 * -1

= 1 * -1

= -1.

Answer:

$907.489

Step-by-step explanation:

Cost of camera : $824.99

Tax = 10%

tax on camera = 824.99 x 10 /100 = 82.499

total amount to be paid = cost + tax

$824.99 + $82.499 = $907.489

Answer:

$907.49

Step-by-step explanation:

Figure out what 10% of 824.99 is. You should get 82.499 which you round up to the nearest hundredth because this is money which gives you 82.50.

824.99+82.50=907.49

Answer:

The radical form of [tex]192[/tex] is [tex]8\sqrt{3}[/tex].

Step-by-step explanation:

Given the number is [tex]192[/tex], we need to find its radical form.

We will do the factorization of [tex]192[/tex].

[tex]192=2\times2\times2\times2\times2\times2\times3=2^6\times3\\192=(2^3)^2\times 3\\192=8^2\times3\\[/tex]

Taking square root both sides we get,

[tex]\sqrt{192}=\sqrt{8^2\times 3}\\\sqrt{ab}=\sqrt{a}\times \sqrt{b}\\\sqrt{192}=\sqrt{8^2}\times \sqrt{3}\\\sqrt{192}=8\times\sqrt{3}\\\sqrt{192}=8\sqrt{3}[/tex]

So, the radical form of [tex]192[/tex] is [tex]8\sqrt{3}[/tex].

Therefore, the solution of the given equation is [tex]13[/tex].

What is the simplification?

Simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

Here given equation is

[tex]x+6[/tex]

when [tex]x=7[/tex]

So, it would be

[tex]x+6=7+6\\=13[/tex]

Hence, the solution of the given equation is [tex]13[/tex].

To know more about the simplification

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Answer:

Step-by-step explanation:

-24 < x - 3 - 8x

-24 < -7x - 3

-24 + 3 < - 7x

-21 < - 7x ......divide by -7 and change ur sign

-21/-7 > x

3 > x <==== ur answer

** in an inequality, if u multiply or divide by a negative, u have to change the sign

:

Step-by-step explanation:

-24 < x - 3 - 8x

-24 + 3 < x - 8x

-21 < -7x

7x > 21

x > 21/7

x > 3

Answer:

Step-by-step explanation:

Diagram 1

Area = b*h/2 = 4y*(y+5)/2 = 2y*(y+5)= 2y² + 10y

Diagram 2

Area = side*side = y * y = y²

the area of ​​the triangle exceeds the rectangle by 39 cm².

2y² + 10y - y² = 39

y² + 10y = 39

y² + 10y -39 = 0

y² +13y - 3y - 3*13 = 0

y(y+13) -3(y+13)=0

(y+13)(y-3) = 0

y  + 13 = 0  will not come as length couldn't be in negative

y - 3 = 0

y = 3 cm

Diagram 2:

Perimeter = 4*side = 4*y = 4*3 = 12 cm

Answer:

35/9

Step-by-step explanation:

2 1/3=7/3

1 5/9=14/9

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

7/3+14/9=21/9+14/9=35/9

Answer: 2 1/3 + 1 5/9 = 3 8/9

Step-by-step explanation: You make the fractions the same so 3/9 is equal to 1/3 so you multiply both numbers in fraction #1 (1/3) by 3 & just add, not the denominators though

Answer:

total=$60

Step-by-step explanation:

Including bill there's a total of 5 people

take what each person paid, $12, and multiply by the number of people

$12(5)=$60

The total bill at the restaurant was $60, calculated by multiplying the amount each person paid ($12) by the number of people (5).

In this Mathematics problem, Bill and his four friends, for a total of five people, decided to equally divide the restaurant bill. Each person paid $12. In order to find the total bill, we must multiply the amount each person paid by the number of people. This means, we multiply $12 by 5, which gives us a total bill of $60.

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Answer:

The computer system would be $332.85‬ less than the normal price, or $618.15‬ total.

Answer: 10%

Step-by-step explanation: If there is a total of 20 volleyball players, but only 2 were counselors so, you have to divide 2 into 20 which would be .10 .

Both Andrew and Elena are wrong. The actual value of 2^28 equals 268,435,456.

Step-by-step explanation:

Elena was right when she said exponents mean repeated multiplication but she accidentally calculated the value of 28^2 instead of 2^28. 2^28 means that the number 2 should be multiplied with itself for 28 times.

2^2 means 2 multiplied by 2 equals 4. 2^3 means 2 multiplied by 2 and then multiplied by 2 again which equals 8. Similarly, if you multiply 2 with itself 28 times you will get a value of 268,435,456 (two hundred and sixty-eight million, four hundred and thirty-five thousand, four hundred and fifty-six). So Andrew and Elena will have 268,435,456 coins after 28 days.

Answer:

0.63

Step-by-step explanation:

Do the long division.

The length of hypotenuse is 39.

Step-by-step explanation:

Given,

Vertical side = a = 15

Horizontal side = b = 36

Hypotenuse = c

Using pythagorean theorem

[tex]a^2+b^2=c^2\\(15)^2+(36)^2=c^2\\225+1296=c^2\\1521=c^2\\c^2=1521[/tex]

Taking square root on both sides

[tex]\sqrt{c^2}=\sqrt{1521}\\c=39[/tex]

The length of hypotenuse is 39.

Keywords: square root, addition

Learn more about square roots at:

#LearnwithBrainly

Answer:

14x-13y

Step-by-step explanation:

Answer:

8000

Step-by-step explanation:

So n equals 0.00 and then in the parentheses 1.1 you would multiply those two numbers X 1300. and then you would ×that answer by 8000 and you get 8000 .

Answer:

Therefore AB is 16 units.

Step-by-step explanation:

Given:

AE = EC

BF = FC

EF = 8 and DF = 10

To Find:

AB = ?

Solution:

Mid Point Theorem:

The Midpoint Theorem states that "the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side".

AE = EC .....Given

Therefore E is the Mid Point of AC.

BF = FC .....Given

Therefore F is the Mid Point of BC.

Therefore,

EF || AB            ........................Mid Point Theorem.

[tex]EF=\dfrac{1}{2}AB[/tex]          ..............Mid Point Theorem.

Substituting the values we get

[tex]8=\dfrac{1}{2}AB\\\\AB=8\times 2=16\ units[/tex]

Therefore AB is 16 units.

Answer:

16

Step-by-step explanation:

4 0 4 0 4 0 Answer is 0

Step-by-step explanation:

Mathaway

Answer:

7

Step-by-step explanation:

35 times .20 is 7

Applying the 2020 US tax brackets, Sarina would owe $4,842.50 in federal taxes on her $42,000 income.

The amount of federal taxes that Sarina owes on her $42,000 income can be determined by referring to the tax brackets provided by the IRS. In 2020, the federal income tax rates for individuals are as follows:

According to these brackets, Sarina would pay 10% on her first $9,875 and 12% on the remaining amount up to $40,125. Any income she earned over that up to $85,525 would be taxed at 22%. Given that Sarina made $42,000, she falls into the second tax bracket. Therefore, her tax would be calculated as follows:

By adding these amounts together, we can conclude that Sarina would owe $4,842.50 in federal taxes for that year.

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Sarina, a single filer earning $42,000 annually, would first deduct the standard deduction to calculate taxable income. Her taxable income of $28,350 would be taxed at 10% for the first $11,000 and at 12% for the next $17,350. The total federal tax owed by Sarina would be $3,182.

The amount Sarina owes in federal taxes depends on the tax rates applied to income brackets. For a single taxpayer earning $42,000 a year, we look at the given tax brackets to calculate the tax owed based on the progressive tax system in the United States.

Since Sarina's income is within the second bracket ($11,001-$44,725), her income will be taxed at different rates for different portions of her income.

First, we subtract a single filer's standard deduction to determine her taxable income. Let's assume the current standard deduction is similar to the $13,650 mentioned.

Calculate taxable income:

Total Income: $42,000

Standard Deduction: $13,650

Taxable Income: $42,000 - $13,650 = $28,350

Now, we split the taxable income according to the tax brackets:

First $11,000 are taxed at 10%: $1,100

Next $17,350 ($28,350 - $11,000), taxed at 12%: $2,082

Total tax owed = $1,100 + $2,082 = $3,182.

The complete question is:

Sarina made $42,000 in the calendar year. How much does she owe in federal taxes?

Rate : 10% , 12% , 22% , 24% , 32% , 35%  37%

Single : Up to $11.000 , $11,001-$44.725 , $44,726-$95,375 , $95,376-$182,100 , $182,101-$231.250 , $231.251-$578-125 , $578-126 or more , standard deviation: $13,650

Married Filing Jointly : Up to $22.000 , $22-001-$89,450 , $89-451-$192,750 , $192,751-$364,200 , $364,201-$462,500 , $462,501-$693,750 , $6933.751 or more , standard Deduction: $27,700

Answer: don't be scared to ask your teacher for help.

Step-by-step explanation:

You should try the best you can with whatever you got. Start with what you know and build from that to study in areas you aren't familiar with. Given the time constraints, you won't be able to get everything; however, you should be able to learn a few things, which is better than nothing. For any specific math questions you have, make a new post and I'll come take a look (or another helper will be able to help).

Answer:

10x² - 25x = 0 ⇔ 5x(2x-5) = 0

the factors are 5x and 2x-5