Julie paid $28 for an item after a 20% discount. What was the original price?

Answer:

[tex]10x - 7x + 3 [/tex]

[tex] = 3x + 3[/tex]

The answer is C. 3x + 3

Answer:

8

Step-by-step explanation:

b2 - 4ac

Replace letters with numbers

4(2) - 4(0)(100)

Multiply left to right

8 - 4(0)(100)

8 - 0(100)

8 - 0

Answer - 8

Answer: x = 0

Step-by-step explanation:

Take it slow and do one problem at a time. Multiply the first x by the second ( ) and then move on to -3

2x + 9x -3x -27 = -27

combine all like terms

8x - 27 = -27

add 27 to both sides

8x = 0

divide by 8 to get x alone

x = 0

Answer:

14

Step-by-step explanation:

So, if x is length, then x*x*8 is 1568. To solve, you do 1568/8, which gives you 196. The square root of 196 is 14, and 14*14*8 is 1568.  

Answer:

C) -14+(-6)

Step-by-step explanation:

14+6=20

-14-6=-20

-14+(-6)=-20

Answer:

with what my guy lol

Step-by-step explanation:

Answer:

628.5

Step-by-step explanation

Since it is 10^2 you move the decimal point 2 places to the right.

Answer:

628.5

Step-by-step explanation:

When you have [tex]10^{2}[/tex] that is the same as 100 when you multiply a decimal by 100 you move the decimal two times, that's how I got 628.5

Hope that helps and have a great day!

The side length of a square game board with an area of 199 inches² is 14.11 inches.

An object's area is how much space it takes up in two dimensions. It is the measurement of the number of unit squares that completely cover the surface of a closed figure.

Given:

The area of the square is 199 inches²

Calculate the length of the square as shown below,

Area of the square = The length of the square ×  The length of the square

199 = l²   (Here l is the length of the square)

l = √199

l = 14.11 inches

Thus, the length of the board is 14.11 inches.

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Answer:

Step-by-step explanation:

It will be easier if you bring that binomial in-front, imo. But the main thing you want to do here is actually really easy. You have to distribute that x to every single term in the trinomial, then do the same thing for the 5. Add up everything.

Distribute the x and 5 like this:

[tex]x(2x^2+7x-10) + 5(2x^2+7x-10)[/tex]

[tex]2x^3+7x^2-10x+10x^2+35x-50[/tex]

Now combine like terms:

[tex]2x^3+17x^2+25x-50[/tex]

There's your answer. Btw, standard form means the exponents are in order high to low and all variables before constants

The product of the expression is 2x³ + 17x² + 25x - 50.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

2x² + 7x - 10 and x + 5

Multiply both expressions.

(2x² + 7x - 10) x (x + 5)

2x³ + 10x² + 7x² + 35x - 10x - 50

Combine like terms.

2x³ + 17x² + 25x - 50

Thus,

The expression is 2x³ + 17x² + 25x - 50.

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Answer:5 with an exponent of 3•55• 53

Step-by-step explanation:

Just make the equation smaller looking by putting together numbers that can be turned into one like there was 4, 5’s so turn it into 5 with and exponent of 3

The value of the expression 5⁷ / 5² will be  5×5×5×5×5. which is the correct answer would be an option (C).

Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.

An exponential function is defined as a function whose value is a constant raised to the power of an argument is called an exponential function.

It is a relation of the form y = aˣ  in mathematics, where x is the independent variable

The expression is given below.

⇒ 5⁷ / 5²

⇒ 5⁷⁻²

⇒ 5⁵

⇒ 5×5×5×5×5

Hence, the value of the expression 5⁷ / 5² will be 5×5×5×5×5. which is the correct answer would be an option (C).

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The question seems to be incomplete the correct question would be

Which of the following expressions is equal to 5⁷/ 5² ?

1.) 5×5×5

2.) 1/5×5×5×5

3.) 5×5×5×5×5

4.) 3

Answer:

Different scientists might perform the experiment differently

Step-by-step explanation:

Answer: If the results are the same, replication of the investigation helps to confirm the results.

Step-by-step explanation:

Answer:

-9+(-5)

Step-by-step explanation:

This expression is correct because it has the same answer as the one you have wrote. Positive times negative is negative. Enjoy! :D

The subtraction expression with the corresponding addition expression -9 - ( -9 -(+5). The correct option is B.

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

The given subtraction expression will be solved as below:-

−9−5 = -9 - (+5)

The product of the plus and minus is always negative. Therefore, subtraction expression with the corresponding addition expression -9 - ( -9 -(+5). The correct option is B.

The missing options are given below:-

A. -9 + 5

B. -9 - (+5)

C . 9 + 5

D. 9 - 5

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Answer:

x = -7

Step-by-step explanation:

Step 1: Write equation

3x - 1 = -22

Step 2: Add 1 on both sides

3x = -21

Step 3: Divide both 3

x = -7

Answer:

To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero). For example, if we divide both terms in the ratio 3:6 by the number three, then we get the equal ratio, 1:2.

Step-by-step explanation:

Hope it helps :)

Brainliest pls? Have a good day/night

Seven hundred and twenty-five thousand two hundred and thirteen

Answer:

Step-by-step explanation:

-y = -2x + 3

y = 2x - 3

y - 1 = 2(x - 1)

y - 1 = 2x - 2

y = 2x - 1

answer is B

Answer:

20minutes

Step-by-step explanation:

1 hour=60minutes

1/3 of 60 minutes is 20minutes.

Pls make me the brainliest

Answer:

20 mins

Step-by-step explanation:

Step 1:

1 hour = 60 mins Ratio Hours to Minutes

Step 2:

1/3 × 60 mins     Equation

Step 3:

1/3 × 60/1 = 60/3    Convert

Answer:

20 mins

Hope This Helps :)

Answer:

4.138138=469069/500000

Step-by-step explanation:

Answer:

Table and graph

x y

0 0

25 15

50 30

Answer: x= (-3)

Step-by-step explanation:

3/4 [x-1] = [-3]

(x-1) = (-3) × 4/3

X-1 = -4

X= -3

The reason why Leslie is wrong is because: D. Her conclusion is wrong. If the rate of change is not constant, then the function cannot be linear.

A linear function can be defined as a type of function whose equation is graphically represented by a straight line on the cartesian coordinate.

This ultimately implies that, a linear function is typically used for uniquely mapping an input variable to an output variable, with the pair of points having a constant of proportionality.

Mathematically, the rate of change can be calculated by using this formula;

Rate of change = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Rate of change = (y₂ - y₁)/(x₂ - x₁)

Rate of change = (-3 - (-4))/(0 - (-1))

Rate of change = 1/1

Rate of change = 1

For the other points chosen, the rate of change is given by:

Rate of change = (5 - (-3))/(2 - (-1))

Rate of change = 8/2

Rate of change = 4.

In conclusion, Leslie is wrong is because the rate of change or constant of proportionality for these data points are not the same.

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Complete Question:

Leslie analyzed the graph to determine if the function it represents is linear or non-linear. First she found three points on the graph to be (-1, -4), (0, -3), and (2, 5). Next, she determined the rate of change between the points (-1, -4) and (0, -3) to be (-3 - (-4))/(0 - (-1)) = 1 and the rate of change between the points (0, -3) and (2, 5) to be (5 - (-3))/(2 - (-1)) = 8/2 = 4. Finally, she concluded that since the rate of change is not constant, the function must be linear. Why is Leslie wrong?

Answer:

C

Step-by-step explanation:

The proof would be the same as statement 2 as the conditions are the same.

Answer:

C

Step-by-step explanation:

this is correct on Edge 2020 :)

Answer:

b.

Step-by-step explanation:

The range means the values of y and in this graph, the values of y are 1,2,3 and 4.

Answer: B.1/24

Step-by-step explanation:

Find out the number of people in spin class and those lifting weights, subtract them from the total number in the gym and then make this a fraction.

Step 1

Number of people in spin class ;

= 5/8 * 48

= 30 people

Number of people lifting weights;

= 1/3 * 48

= 16 people

Step 2

Number of people running

= 48 - 30 - 16

= 2 people

Step 3

Convert this to a fraction in its lowest form;

= 2/48

= 1/24

Answer:

B.

Step-by-step explanation:

Happy Holidays !!!!!! :)

Answer:

Step-by-step explanation:

=(4x+5y)(2x-3)+3xy

=4x(2x-3)+5y(2x-3)+3xy

=8x²-12x+10xy-5y+3xy

=8x²-12x-5y+13xy(Answer)

Answer:  [tex]x^2+y^2=\dfrac{105\pm 18\sqrt6}{2}[/tex]

Step-by-step explanation:

EQ1:  x + y = 12     --> x = 12 - y

EQ2:  xy = 15      

Substitute x = 12-y into EQ2 to solve for y:

(12 - y)y = 15

12y - y² = 15

0 = y² - 12y + 15

    ↓     ↓         ↓

  a=1   b= -12   c=15

[tex].\ y=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\\.\quad =\dfrac{-(-12)\pm \sqrt{(-12)^2-4(1)(15)}}{2(1)}\\\\\\.\quad =\dfrac{12\pm \sqrt{144-120}}{2}\\\\\\.\quad =\dfrac{12\pm \sqrt{24}}{2}\\\\\\.\quad =\dfrac{12\pm 2\sqrt{6}}{2}\\\\\\.\quad =6\pm \sqrt{6}[/tex]

Now, let's solve for x:

[tex]xy=15\\\\x(6\pm\sqrt6)=15\\\\x=\dfrac{15}{6\pm\sqrt6}\\\\\\x=\dfrac{15}{6\pm\sqrt6}\bigg(\dfrac{6\pm\sqrt6}{6\pm\sqrt6}\bigg)=\dfrac{6\pm \sqrt6}{2}[/tex]

Lastly, find x² + y² :

[tex]y^2=(6\pm \sqrt6)^2\quad \rightarrow \quad y^2=36\pm 12\sqrt6 +6\quad \rightarrow \quad y^2=42\pm 12\sqrt6[/tex]

[tex]x^2=\bigg(\dfrac{6\pm \sqrt6}{2}\bigg)^2\quad \rightarrow \quad x^2=\dfrac{42\pm 12\sqrt6}{4}\quad \rightarrow \quad x^2=\dfrac{21\pm 6\sqrt6}{2}[/tex]

[tex]x^2+y^2=\dfrac{21\pm 6\sqrt6}{2}+42\pm 12\sqrt6\\\\\\.\qquad \quad = \dfrac{21\pm 6\sqrt6}{2}+\dfrac{84\pm 24\sqrt6}{2}\\\\\\. \qquad \quad = \dfrac{105\pm 18\sqrt6}{2}[/tex]