The number of students in chess club decreased from 49 to 18 what is the percentage decrease

Answer:

I think this is it -6.4z -3.5xz

Step-by-step explanation:

Answer:

=−3.5xz−6.4z

Step-by-step explanation:

Answer:

[tex]y = \frac{1}{3}x + 8[/tex]

Step-by-step explanation:

using the slope-intercept formula, u have this so far as an equation (just knowing the slope): [tex]y = \frac{1}{3}x + b[/tex]

To find the y-intercept, substitute in the values of the coordinates given to solve for b:

[tex]y = \frac{1}{3}x + b\\5 = \frac{1}{3}(-9) + b\\5 = -3 + b\\8 = b[/tex]

so u can just put 8 into your slope-intercept formula ([tex]y = \frac{1}{3}x + 8[/tex]) and that's it! hope this helps!

Answer:Kathy uses 1.72 pint of white paint

Step-by-step explanation:

Total amount of paint ( Blue and white paint)= 8.6 pints

Amount of  blue paint=4/5 x 8.6 = 6.88 Pints

amount of white paint = Total amount of paint - amount of blue  paint

= 8.6 pints - 6.88 pints

=1.72 pint of white paint

Answer:274707

Step-by-step explanation:

Answer: x=8

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

3x−x−1=15

3x+−x+−1=15

(3x+−x)+(−1)=15(Combine Like Terms)

2x+−1=15

2x−1=15

Step 2: Add 1 to both sides.

2x−1+1=15+1

2x=16

Step 3: Divide both sides by 2.

2x /2 = 16 /2

x=8

Answer:

3x-x=15+1

2x=16

x=16/2

x=8

Answer:

3c+2=2+3c

Step-by-step explanation:

x1=0,x2=2/7 that is the answer

Answer:

This is not solvable.

Step-by-step explanation:

Is there a second equation? You cannot solve an equation with two variables.

What do you mean????

Answer:

I assume that "m" means meters. If so it would be 0.3 meters

Step-by-step explanation:

Answer:

2.5

Step-by-step explanation:

Answer: The number is 106.4

Step-by-step explanation:

Let the number be x

Mar halves the number becomes = x x 1/2  to get 53.2

The equation to solve this problem is  x/ 2 = 53.2

Such that to find x

x/2= 53.2

x =  2 x 53.2= 106.4

The number is 106.4

Answer:

She made 10 free throws

Step-by-step explination:

I found it on this website: https://staff.4j.lane.edu/~ruzicka/Cal_Young/math/Illustrative%20Math/Unit%203%20Rates%20and%20Percents/Lesson%2011/L11%20HW%20Key%20Corrected.pdf

Try it and see if you are right

Considering that it's highest exponent is of 3, the expression 5x³ + 2x - 3 is a cubic expression.

The degree of a polynomial is given by the highest exponent.

The highest exponent of the expression 5x³ + 2x - 3 is a 3, hence it is a cubic expression.

More can be learned about the degree of a polynomial at https://brainly.com/question/24380382

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Answer:  C: cubic expression

Step-by-step explanation:

Classify the expression: 5x³ + 2x − 3

we know that

Polynomials can be classified two different ways - by the number of terms and by their degree.

so

a) By the number of terms is a trinomial, because has three terms

b) By their degree The degree of the polynomial is found by looking at the term with the highest exponent on its variable

The highest exponent is 3 so this is a 3rd degree trinomial  

therefore

Is a cubic expression

Answer:

0.1456858

Step-by-step explanation:

Hope it help

Answer:

−1/2

Explanation:

cos(8π/3)

=cos(8π/3 − 2π)

=cos(2π/3) = − cos (π/3) = −1/2

Answer:

-5

Step-by-step explanation:

Cuz it lines up to -5 on x-axis

Answer: it would be y=-4x+2

Answer:

the second option (y= -4x + 2)

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

if its asking for inches

Answer:

>

Step-by-step explanation:

6.25 L is the same as 6250 mL, which is greater than 625 mL.

Hope it helps!

Answer:

[tex]66.05[/tex]

Step-by-step explanation:

Cost of meal = [tex]64.75[/tex]

Cost of meal after discount of [tex]15\%[/tex]

[tex]64.75-64.75\times 0.15[/tex]

[tex]=64.75(1-0.15)[/tex]

[tex]=55.0375[/tex]

Cost of the meal after tip of [tex]20\%[/tex]

[tex]55.0375\times (1+0.2)[/tex]

[tex]=66.045\approx 66.05[/tex]

The total cost of the meal was [tex]66.05[/tex].

The dimensions of the rectangular pigpen with the largest possible area are 50 ft×25 ft.

The area and perimeter of a rectangle in the study of differential calculus, specifically in optimization problems are functions of two variables that depending on what is requested in these problems can be objective functions or link functions between the variables.

We use what we know about the perimeter of the rectangle to find a condition equation that expresses the length a in terms of the width b.

P(a, b)=a+2b [Perimeter of the fence of the rectangular pigpen]

p(a, b)=2a+3b [Substitute P(a, b)=100]

100=a+2b

a=100-2b

We must find the largest area. Using the condition equation, find the area as a function of the variable b.

A(a, b)=ab [total area of the rectangular pigpen]

A(a, b)=(100-2b)b [Replace a=100-2b]

A(a, b) = 100b-2b²

Objective function Domain

A(a, b) = 100b-2b²

D={b∈R : b>0} [Domain of the objective function]

To find the extremes of the function we have to look for the critical points of the function and apply the second derivative test.

A(a, b) = 100b-2b²

A'(a, b) =100-4b [First derivative of the objective function]

A'(b)=0

100-4b=0

4b=100

b=25 [Critical point]

Applying sufficient condition for extremes

A'(b)=100-4b [First derivative of the objective function]

A''(b)=-4 [Second derivative of the objective function]

A''(b)=-4 [A''(b)<0∀b∈D]

b=25 [Maximum point of the objective function]

Calculate the dimension of the rectangular pigpen

b=25 [Width of the rectangular pigpen]

a=100-2(25)=50 [Length of the rectangular pigpen]

Therefore, the dimensions of the rectangular pigpen with the largest possible area are 50 ft×25 ft.

To learn more about the area of a rectangle visit:

https://brainly.com/question/20693059.

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Answer:

85 cents

Step-by-step explanation:

i belive

Answer:

The answer of this should be c

Answer:

C: M=10

Step-by-step explanation:

4M+40=7M+10

 -7M        -7M

-3M +40=10

       -40  -40

-3M=-30

/-3     /-3

M=10

HOPE I HELPED:)

Answer:

Hi it is me again :)

Step-by-step explanation:

multiply  the numbers

Answer:

(a) x = -2y

(c) 3x - 2y = 0

Step-by-step explanation:

You can tell if an equation is a direct variation equation if it can be written in the format y = kx.

Note that there is no addition and subtraction in this equation.

Let's put these equations in the form y = kx.

(a) x = -2y

(b) x + 2y = 12

(c) 3x - 2y = 0

(d) 5x² + y = 0

(e) y = 0.3x + 1.6

(f) y - 2 = x

The following equations are examples of direct variation:

Answer:

(a) x = -2y

(c) 3x - 2y = 0

Step-by-step explanation:

You can tell if an equation is a direct variation equation if it can be written in the format y = kx.

Note that there is no addition and subtraction in this equation.

Let's put these equations in the form y = kx.

(a) x = -2y

y = x/-2 → y = -1/2x

This is equivalent to multiplying x by -1/2, so this is an example of direct variation.

(b) x + 2y = 12

2y = 12 - x

y = 6 - 1/2x

This is not in the form y = kx since we are adding 6 to -1/2x. Therefore, this is NOT an example of direct variation.

(c) 3x - 2y = 0

-2y = -3x

y = 3/2x

This follows the format of y = kx, so it is an example of direct variation.

(d) 5x² + y = 0

y = -5x²

This is not in the form of y = kx, so it is NOT an example of direct variation.

(e) y = 0.3x + 1.6

1.6 is being added to 0.3x, so it is NOT an example of direct variation.

(f) y - 2 = x

y = x + 2

2 is being added to x, so it is NOT an example of direct variation.

The following equations are examples of direct variation:

x = -2y

3x - 2y = 0

Hey there!

Given:

[tex]\frac{33}{99}[/tex]

First, we can simplify it by dividing the numerator and denominator by [tex]33[/tex]:

[tex]\frac{1}{3}[/tex]

And, using common knowledge, we know that [tex]\frac{1}{3}[/tex] as a decimal is [tex]0.333...[/tex]

Have a great day!

Answer:33/9 is equal to 3 2/3.

Step-by-step explanation:

I hope this helped<3

Answer:

[tex]\dfrac{-2}{3}[/tex]

Step-by-step explanation:

Given that:

[tex]1 - \dfrac{3}{4} \times 2 - \dfrac{1}{6}[/tex]

[tex]\text{using BODMAS}[/tex]

[tex]\text{we first find the multiplication before subtracting the values}[/tex]

[tex]\text{So;}[/tex]

[tex]1 - \dfrac{3}{2} - \dfrac{1}{6}[/tex]

[tex]\text{now we look for the lowest common multiple L.C.M}[/tex]

[tex]= \dfrac{6 - 9 - 1}{6}[/tex]

[tex]= \dfrac{-4}{6}[/tex]

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

Answer:

it will be 13/5 x 9/7

Step-by-step explanation:

2 3/5 / 7/9

2 x 5 = 10

10 + 3 = 13

13/5

flip 7/9 to 9/7

Answer:

30.

Step-by-step explanation:

you get tot the 180-50=120.

120÷2=60

90-60=30