Solve the following system of equations:
-2x + y = 1
-4x + y = -1

A: (3, 1)
B: (-1, 3)
C: (-1, -3)
D: (1, 3)

Answer: x = 4

Step-by-step explanation:

Answer: See explanation

Step-by-step explanation:

You didn't give further information that will be useful in solving the question but let me help out.

Let's say the price of a car is $30,000 and the sales tax is 4%, the tax that will be added to the car would be:

= 4% × $30,000

= 4/100 × $30,000

= 0.04 × $30,000

= $1200

Answer:

X=3

Step-by-step explanation:

Give the other person the brainliest since they asked for it >> also I saw your had ray as your pfp yesssss

Answer:

A

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

domain -are all values of x

c -because x can take any value except 1

Answer:

Circle 1=6x+2y

Rectangle 4 = 3x+y

Circle 4 = 5x

Step-by-step explanation:

4x+3y and 2x-y can be added to find result for the circle.

Let C1 represent circle 1

4x+3y+2x-y=C1\\

Combining\:like\:terms\\

4x+2x+3y-y=C1

6x+2y=C1

So, The result is: C1=6x+2y

Now, We need to solve:

Let R1 represent rectangle 4

x+4y + R1 = 4x+5y

R1=4x+5y-(x+4y)

R1=4x+5y-x-4y

R1=4x-x+5y-4y

R1=3x+y

So, Solving x+4y + R1 = 4x+5y, We get R1 = 3x+y

Now, We need to solve the equation:

Let C4= Circle 4

2x-y+3x+y=C4

Combining the like terms

2x+3x-y+y=C4

5x=C4

So, Solving 2x-y+3x+y=C4 we get C4 = 5x

Answer:9

Step-by-step explanation: f(2)  ((2)+1)^2

Answer:

f(2) = 9

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

f(x) = (x + 1)²

f(2) is x = 2

Step 2: Evaluate

Answer:

[tex]d = 15.0[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra II

Step-by-step explanation:

Step 1: Define

Point C (7, -4)

Point D (-8, -5)

Step 2: Find distance d

Answer:

Diana is 36

1

64

-

28

--------

3  6

Step-by-step explanation:

Answer:

36

Step-by-step explanation:

64-28= 36

I think my math is right I hope this helps good luck!

Answer:

188

i think, i'm not that sure what the dot in. "20.0" is.  i cant tell if its for mutiplcation or a decimal

The solution to an equation is the result of solving the equation

The solution to 40 + 40 - 20 . 0 + 3 + 125 is 208

The equation is given as:

[tex]40 + 40 - 20 \cdot 0 + 3 + 125[/tex]

Evaluate the products of 20 and 0

[tex]40 + 40 - 20 \cdot 0 + 3 + 125 = 40 + 40 -0 + 3 + 125[/tex]

Add the terms of the expression

[tex]40 + 40 - 20 \cdot 0 + 3 + 125 = 208[/tex]

Hence, the solution to 40 + 40 - 20 . 0 + 3 + 125 is 208

Read more about equations and solutions at:

https://brainly.com/question/13729904

Answer:

4 free wedges of cheese

Step-by-step explanation:

From the above question:

3 sticks of butter purchased = 1 free wedge of cheese

12 sticks of butter purchased = x

Cross Multiply

3 × x = 12 × 1

x = 12/3

x = 4 free wedges of cheese

Therefore, when Baby Jr. Buys 12 sticks of butter, she will receive 4 free wedges of cheese.

Answer:

x = 15

Step-by-step explanation:

75 + 10x = 225

subtract 75 from both sides

10x = 150

divide both sides by 10

x = 15

Answer:

x = 15

Step-by-step explanation:

75 +10x = 225                 Given

75-75+10x = 225-75       Subtract 75 from each side (to isolate x)

10x = 150                         After

10x/10 = 150/10               Divided each side by 10 (to get the unite rate of x)

x = 15                               Answer

Answer:

The distance between the points is equal to 267 feet

Step-by-step explanation:

In order to find the distance between the highest and the lowest points in the park we just have to subtract the the lower height from the higher height and the resulting difference will be equal to the distance between the two points. And so we get..........

235 - (-32) = 235 + 32 = 267

(Notice that the 32 feet are written as (-32) because the lowest point is 32 feet below the sea level).

Given:

[tex]\left(-\dfrac{2}{3}\right)\times \left(-\dfrac{2}{3}\right)^3[/tex]

To find:

The value of given expression by using the Laws of Exponents.

Solution:

We have,

[tex]\left(-\dfrac{2}{3}\right)\times \left(-\dfrac{2}{3}\right)^3[/tex]

Using the Laws of Exponents, we get

[tex]=\left(-\dfrac{2}{3}\right)^{1+3}[/tex]      [tex][\because a^ma^n=a^{m+n}][/tex]

[tex]=\left(\dfrac{-2}{3}\right)^{4}[/tex]

[tex]=\dfrac{(-2)^4}{(3)^4}[/tex]      [tex][\because \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}][/tex]

[tex]=\dfrac{(-2)\times (-2)\times (-2)\times (-2)}{(3)\times (3)\times (3)\times (3)}[/tex]

[tex]=\dfrac{16}{81}[/tex]

Therefore, the value of given expression is [tex]\dfrac{16}{81}[/tex].

Answer:

25 , 30

Step-by-step explanation:

x > 50 -28

x > 22

x is greater than 22.

Answer:

Step-by-step explanation:

D and E because x must be greater than 23

Answer:

$ 65.13

Step-by-step explanation:

John deposits $25 at the end of each month in a savings account with 6.4% annual interest compounded monthly. What is his account balance at the end of 15 years? *

The formula for compound interest =

A = P(1 + r/n)^nt

Where

P = Initial amount deposited = $25

r = Interest rate = 6.4% = 0.064

n = number of times interest is compound = monthly = 12 times

t = time in years = 15 years

A = $25 × (1 + 0.064/12)^12 × 15

A = $65.13

His account balance at the end of 15 years is $65.13

Answer:

Answer: D) inverse operations

Subtraction is the inverse operation of addition

Step-by-step explanation:

please mark as brainliest!!

Expand the binomial:

(√2/5 + 5/2 i )² = (√2/5)² + 2i (√2/5) (5/2) + (5/2 i )²

… = 2/25 + √2 i + 25/4 i ²

… = -617/100 + √2 i

Answer:

3/4(x^2)

Step-by-step explanation:

........................

Answer:

Step-by-step explanation:

slope-intercept formula.. y= mx + b  

so that's the form we want to get to

use the point-slope formula to get there  y-y1 = m(x-x1)

m= slope and (x1,y1) is your given point

y-5 = 4(x-3.5)

y-4 = 4x - 14

y = 4x -14 +4

y = 4x -10

this looks like the slope-intercept form :)

The equation of a line with slope 4 that passes through the point (3.5,5) in slope-intercept form is y = 4x - 9 where y-intercept is -9

It is defined as the relation between two variables if we plot the graph of the linear equation we will get a straight line.

If in the linear equation one variable is present then the equation is known as the linear equation in one variable.

We have:

The slope of the line = 4

The line passes through a point (3.5, 5)

We know the equation of the line that has slope m and y-intercept c:

y = mx + c

y = 4x + c   (m = 3)

Point (3.5, 5) must satisfy the above line equation:

5 = 4(3.5) + c

c = -9 put this value in the line equation we get:

y = 4x -9

Thus, the equation of a line with slope 4 that passes through the point (3.5,5) in slope-intercept form is y = 4x - 9 where y-intercept is -9

Learn more about the linear equation here:

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Answer:

1700 tornillos

Step-by-step explanation:

Dado que la máquina produce un 3% de tornillos defectuosos en un día. Produjo 51 tornillos defectuosos en un día.

Deje que el número total de tornillos producidos ese día sea x

Por lo tanto;

3% de x = 51

3/100 * x = 51

x = 51 * 100/3

x = 1700 tornillos

Answer:

d

Step-by-step explanation:

Answer:

there are dots outside of the allotted area

Step-by-step explanation:

I've never taken a math help class but from your paper one can assume you have to point out the error in the graph. Its a bit fuzzy so I cant see the numbers or labels but you take what you learned for how to graph and apply it here.

For example:

The dots should stay inside the graph. Not on the outside

The numbers that are on the side, the axis, they should all progress in a specific sequence. Like 2,4,6,8,10. It needs to stay constant. Not 2,4,6,8,19

Same for both x and y axis^

I'm not sure if that helps much with what your doing seeing as the instructions apply what you've already learned, but I hope you do good!

Answer:

He will have enough money after 2 weeks.

Step-by-step explanation:

If he wants to buy 3 video games that are $50 each, he would need $150. He makes $80 a week. By the second week, he will have earned $160, which is enough for all 3 games.

Answer:

[(a - 2b)(a + 2b) + 9)][(a - 2b)(a + 2b) - 9]

This can be written as the difference of 2 squares:

(a^4 - 8a^2b^2 + 16b^4) -81

= (a^2 - 4b^2)^2 - 81

=[(a^2 - 4b^2) + 9] [(a^2 - 4b^2) - 9]

= [(a - 2b)(a + 2b) + 9)][(a - 2b)(a + 2b) - 9]

The factorized form of the given expression will be as:

[(a - 2b)(a + 2b) + 9)][(a - 2b)(a + 2b) - 9]

Factorization, also known as factoring, is the breakdown of one element into a product of other objects, or factors, which when multiplied together generate the original. For example, the number 21 factors into primes as 3 × 7, and the polynomial x² − 9 factors as (x+3)(x-3).

The expression is given in the question as:

(a⁴ - 8a²b² + 16b⁴) - 81

We have to determine the factorized form of the given expression

As per the given question, the required solution would be as:

(a⁴ - 8a²b² + 16b⁴) - 81

This can be written as the difference between 2 squares:

⇒ (a² - 4b²)² - 81

⇒ [(a - 4b²) + 9] [(a² - 4b²) - 9]

⇒ [(a - 2b)(a + 2b) + 9)][(a - 2b)(a + 2b) - 9]

Learn more about the Factorization here:

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Answer:

<A and <C

Step-by-step explanation:

If EA and EC are congruent, the angles <A and <C are also congruent

Answer:

angle A congruent to angle C

Answer:

(4,–2)

Took the quiz

9514 1404 393

Answer:

  yes, SAS

Step-by-step explanation:

Two sides are given, either side of a vertical angle. So, the angles are the same. If the sides are proportional, the similarity will be by SAS (two sides, either side of an angle).

The ratios of short to long sides are ...

  39/52 = (3·13)/(4·13) = 3/4

  63/84 = (3·21)/(4·21) = 3/4

The sides are proportional and the angle between them is congruent, so ...

  the triangles are similar by SAS.

Answer:

Step-by-step explanation:

for a triangle inscribed in a semicircle that angle is always 90 degrees

9514 1404 393

Answer:

  C.  90°

Step-by-step explanation:

A triangle inscribed in a semicircle is always a right triangle. The measure of angle Y, which subtends an arc of 180°, is half the measure of the arc it subtends, so is 180°/2 = 90°.

Answer:

The slope of the line is 3.

Step-by-step explanation:

Remember:

[tex]Slope = \frac{rise}{run} [/tex]