50 points and a Brainliest.

Answer:

Check below for the process

Step-by-step explanation:

So ill take a) for example. it says that y is equal to 4 times x. y referring to the column y. So in the first row when it says x is one you would have to do 4 times 1 to find what would be in y

Answer:

5

Step-by-step explanation:

because equation by itself

Answer: its D. 52 cm

Step-by-step explanation: Just got it good

Answer:

5/8

Step-by-step explanation:

my bad

Answer:

Step-by-step explanation:

i got 1.11111111111 hope it helps ( give me brainliest please)

Answer:

b. y-6=3/4

4x (y-6)=3

4x=3/(y-6)

y=3/(x-6.

a. not soo sure

Answer:

x = 4

Step-by-step explanation:

2x − y = 11      ⇒    -y = - 2x +11     ⇒      y = 2x - 11

x + 3y = -5

x + 3(2x - 11) = -5

x + 6x - 33 = -5

      +33       +33  

7x = 28

÷7     ÷7

x = 4

The solution of x in the system of linear equations is x = 4

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

2x - y = 11   be equation (1)

x + 3y = -5   be equation (2)

Multiply equation (1) by 3 , we get

6x - 3y = 33   be equation (3)

Adding equation (2) from equation , we get

7x = 28

Divide by 7 on both sides , we get

x = 4

Hence , the equation is solved and x = 4

To learn more about equations click :

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Answer:

A, all three angles of a triangle equal 180

Answer:

b. x + 40 = 90

Step-by-step explanation:

This is a right triangle, so we already know one of the angles is 90 degrees. The other angles combine to make the other 90 degrees. So, we have to figure out what the other angle is, as the second one is 40 degrees.  To figure that out, use the equation x + 40 = 90. (This is extra, but x is 50, right?)

Answer:

20 boys can eat 64 slices of pizza.

Step-by-step explanation:

Boys        Pizza

  5             16  

 10             32

 15             48

 20           64

Answer:

2,3

Step-by-step explanation:

Answer:

(x - 3)² + (y + 2)² = 9

General Formulas and Concepts:

Pre-Calculus

Equation of a Circle: (x - h)² + (y - k)² = r²

Step-by-step explanation:

Step 1: Define

Center (3, -2)

Radius r = 3

Step 2: Write Equation

Answer: Polynomial-an expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable.(like 2x+5)

Coefficient-a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (like 4 in 4x y)

Step-by-step explanation:

Answer:

1. 6000

2. 40.83%

3. 51.67%

4. misc

Step-by-step explanation:

1 add all the numbers together

2 divide payroll amt by entire amt

3 add the rent and inventory then divide by total spent in the month

4 300/6000= .5 ( which in percent form( multiply by 100) equals 5%)

Answer:

The area is 260 sqaure units.

Step-by-step explanation:

Finding the area of a parallelogram is like finding the area of a rectangle. The base times the height equals the area. As a result, you would multiply 20 by 13 to get 260.

Answer:

both I think hope u get it right

Answer: X=y/2-5/2

Step-by-step explanation:

Answer:

x=1/2y+(−5/2) or x=y-5/2

Step-by-step explanation:

Step 1: Flip the equation.

2x+5=y

Step 2: Add -5 to both sides.

2x+5+−5=y+−5

2x=y−5

Step 3: Divide both sides by 2.

2x/2=y−5/2

x=1/2y+(−5/2) or x=y-5/2

Answer 6

Step-by-step explanation:

I found the answer on calculator

Answer:

see explanation

Step-by-step explanation:

Using the product rule

Given

y = f(x)g(x) , then

[tex]\frac{dy}{dx}[/tex] = f(x).g'(x) + g(x).f'(x) ← product rule

(a)

let

f(x) = (3x - 1)³ , then using the chain rule

f'(x) = 3(3x - 1)² × [tex]\frac{d}{dx}[/tex](3x - 1) = 3(3x - 1)² × 3 = 9(3x - 1)²

let

g(x) = 2x + 5 ⇒ g'(x) = 2

Then

[tex]\frac{dy}{dx}[/tex] = (3x - 1)³ . 2 + (2x + 5) × 9(3x - 1)²

    = 2(3x - 1)³ +9(3x - 1)²(2x + 5) ← factor out (3x - 1)²

    = (3x - 1)²[ 2(3x - 1) + 9(2x + 5) ]

    = (3x - 1)² [ 6x - 2 + 18x + 45 ]

    = (3x - 1)²(24x + 43)

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

(b)

let

f(x) = 3x - 2 ⇒ f'(x) = 3

let

g(x) = 2x² + 3 ⇒ g'(x) = 4x

Then

[tex]\frac{dy}{dx}[/tex] = (3x - 2).4x + (2x² + 3). 3 ← distribute parenthesis

    = 12x² - 8x + 6x² + 9

    = 12x² - 8x + 9

Note

It is usual to simplify after differentiating the expressions

Answer:

I never did this before but i am working on it ok

Step-by-step explanation:

Answer:

1.Her average score is 20

Step-by-step explanation:

8 + 9 + 13 = 30

-7 + -3 = -10

30 + -10 = 20

Answer:

2.$1.75

Peter signed up for a program that costs $10.50 per month to stream movies to his computer.

He decided to cancel his service after 5/6 month

So,has to pay for the amount of time he used the service:

$10.50 • 5/6 = $1.75 • 5 = $8.75

The amount of money peter has after paying for the service is

$10.50 - $8.75 = $1.75

Answer:

3.

All fruit is $0.80 per pound.Converting fractions to decimals, 1/8 = 0.125 and 1/4 = 0.25.We can multiply these decimals and 0.8 together to find the price paid for each fruit.When you do it correctly,here are your answer.

Apples:$0.10

Pears:$0.20

Bananas$1

Now, we can add those prices together to get $1.30.Maggie spent $4.05 total. We need to find out how much she spent on cheese.To find this amount, subtract both numbers.4.05 - 1.30 is 2.75.There. Maggie spent $2.75 on cheese.

Answer:

This other side of the triangle is equal to about 11.7 cm

Step-by-step explanation:

In order to find out the third side of the triangle we will just use the Pythagoras Theorem.

[tex]c^{2} =a^{2} + b^{2}[/tex]

Since we know the hypotenuse and we know one of the legs, in order to find the second leg we just substitute the values and solve the equation and so we get...

[tex]c^{2} =a^{2} + b^{2}\\19^{2} = 15^{2} + b^{2}\\361 = 225 + b^{2} \\[/tex]

[tex]b^{2} = 361 - 225\\b^{2} = 136\\b = \sqrt{136} \\[/tex]

And so b ≈ 11.66190

Answer:

The equation of the straight line is  x - 2y +6 =0

Step-by-step explanation:

Explanation:-

Given a point ( 2, 4) and slope m =  [tex]\frac{1}{2}[/tex]

The equation of the straight line passing through the point and having slope 'm'

          y - y₁ = m ( x - x₁)

           y - 4 = [tex]\frac{1}{2}[/tex] ( x - 2)

          2( y -4) = ( x-2)

          2 y - 8 = x -2

          x - 2 y - 2 + 8 =0

          x - 2y + 6 =0

The equation of the straight line is  x - 2y +6 =0

The answer is:

y = 1/2x + 5

Work/explanation:

Since I have a point and the slope, I will write the equation in point slope form.

Point slope is

[tex]\sf{y-y_1=m(x-x_1)}[/tex]

where m = slope and (x₁, y₁) is a point on the line

Plug in the data

[tex]\sf{y-4=\dfrac{1}{2}(x-2)}[/tex]

Now let's simplify to slope intercept

                    [tex]\large\begin{gathered}\sf{y-4=\dfrac{1}{2}x+1}\\\sf{y=\dfrac{1}{2}x+1+4}\\\sf{y=\dfrac{1}{2}x+5}\end{gathered}[/tex]

Answer:

Step-by-step explanation:

true i hope this helps!

Answer:

false

Step-by-step explanation:

Answer:

x =54

Step-by-step explanation:

68 - x = 14

find the difference of 68 and 14 to get X

68 - 14 = 54

X=54

(Sorry if it is incorrect or doesn’t make sense!)

Answer:

The answer is y = -2x .....

Answer:

y=2

Step-by-step explanation:

This line is horizontal because it just crosses the y-axis at 2.

The picture shows what the graph would look like. The dark purple dot on the line is where the coordinate 2 is

10.5y + 6x

and it's done

Answer:

3 cm

Step-by-step explanation:

So, in the first week, the water decreased 4 cm

But, in the next week the water level rose by 7 cm

So, we need to do -4+7, which equals 3cm

Thanks!

Answer:

100%     -     80

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

20%      -      x

[tex]100x=80*20\\100x=1600\\x=\frac{1600}{100}\\x=16[/tex]

Answer:

it depends how many of each you want, you would take $800 for the price of the item or $400. then x for the amount of items you need.  then put that all over your total and divide.

so it would look like this

Step-by-step explanation:

800(x)

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

20,000