You sell bracelets for $2 each and necklaces for $3 each at a local flea market. You collect$96, selling a total of 36 jewelry items. how many of each type did you sell?

Answer:

k=3

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]k=\frac{y}{x}[/tex] or [tex]y=kx[/tex]

In this problem we have

[tex]y=3x[/tex]

therefore

The constant of proportionality  is k=3

Answer:

k=3

Step-by-step explanation:

i went on knan and it worked

One roll of plain costs $20 and one roll of shiny costs $20 also.

Step-by-step explanation:

Let,

Cost of one roll of plain = x

Cost of one roll of shiny = y

According to given statement;

2x+2y=80     Eqn 1

8x+10y=360    Eqn 2

Multiplying Eqn 1 by 4

[tex]4(2x+2y=80)\\8x+8y=320\ \ \ Eqn\ 3[/tex]

Subtracting Eqn 3 from Eqn 2

[tex](8x+10y)-(8x+8y)=360-320\\8x+10y-8x-8y=40\\2y=40[/tex]

Dividing both sides by 2

[tex]\frac{2y}{2}=\frac{40}{2}\\y=20[/tex]

Putting y=20 in Eqn 1

[tex]2x+2(20)=80\\2x+40=80\\2x=80-40\\2x=40[/tex]

Dividing both sides by 2

[tex]\frac{2x}{2}=\frac{40}{2}\\x=20[/tex]

One roll of plain costs $20 and one roll of shiny costs $20 also.

Keywords: linear equation, elimination method

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If r and p are perpendicular:

1 + 2 = 90°

3 = 90°

4 + 5 = 90°

6 = 90°

If any one of these are true, r and p must be perpendicular

Answer:

Yes

Step-by-step explanation:

First you will have to find out the scale

Then you will find out the numbers that are

Perpendicular

Answer:

411

1000 is divisible by 4, 600 is divisible by four, and 44 is divisible by for: add up you get 250+150+11

Step-by-step explanation:

411

Using place value, the quotient of 1,644 and 4 is: 411.

Given the dividend, 1,644, to divide it by the divisor, 4, break down 1,644 using place value, and divide by 4 separately.

1,644/4 = (1,000 ÷ 4) + (600 ÷ 4) + (44 ÷ 4)

1,644/4 = (250) + (150) + (11)

1,644/4 = 411

Therefore, using place value, the quotient of 1,644 and 4 is: 411.

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Answer:

The left side continues up, and the right side continues down.

Step-by-step explanation:

[tex]f(x) = -9x^3 + 8x^2 - 16x + 3[/tex]

To find the end behavior, determine the highest degree and leading coefficient

Highest degree is 3  and leading coefficient is -9

highest degree 3 is odd and leading coefficient is negative

As x->-infinity , y -> infinity

As x->infinity , y ->-infinity

The left side continues up, and the right side continues down.

Answer:

Correct answer is C.

Step-by-step explanation:

Answer:

60 I think

Step-by-step explanation:

1100-400=700 12×60=720

59 hours

She has to save $700

The money can you accumulate over the course of a year if you opt to save the money instead will be $82.68.

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

It is also known as the product. If the object n is given to m times then we just simply multiply them.

Assume you drink eight sodas per week & they cost $1.59 each.

We know that there are 52 weeks in a year.

The money can you accumulate over the course of a year if you opt to save the money instead will be

⇒ $1.59 × 52

⇒ $82.68

The money can you accumulate over the course of a year if you opt to save the money instead will be $82.68.

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Answer:

the answer is D.) 4/3

Step-by-step explanation:

when you look for a slope that is perpendicular to the slope you are given you take the reciprocal and change the sign

Answer:

4/3

Step-by-step explanation:

Because perpendicular means negative reciprocal.

Answer:

The given expression at p = 5 can be written as:

[tex]4(p^4)  > 2p -3[/tex]

Step-by-step explanation:

Here, the given expressions are:

[tex](4p^4 ), (2p-3)[/tex]

Now, substitute the value of p = 5 in both the given expressions, we get:

[tex]4(p^4)  = 4(5^4)  = 4 (625)   =  2,500\\\implies 4(p^4) = 2,500[/tex]

Similarly,

[tex](2p-3)  = 2(5) - 3 = 10 -3 = 7\\\implies 2p - 3  = 7[/tex]

So,now comparing  both the values at p = 5, we get:

2,500 > 7

[tex]\implies 4(p^4)  > 2p -3[/tex]

Hence, the given expression at p = 5 can be written as:

[tex]4(p^4)  > 2p -3[/tex]

The equation which represents the amount of minutes.m that it will take to fill the pool is 200 = 60 + 10m

Which equation represents the amount of minutes ( m) that it will take to fill the pool?

Let

m = amount of minutes that it will take to fill the pool

Gallons of water in the pool = 60 gallons

Capacity of the pool = 200 gallons

Additional gallons added per minutes = 50 gallons / 5

= 10 gallons per minutes

The equation:

200 = 60 + 10m

200 - 60 = 10m

140 = 10m

Divide both sides by 10

m = 140/10

m = 14 minutes

Therefore, it takes Anita 14 minutes to fill the pool.

Answer:

45% of 31 days is 13.95 days, theres your answer.

Answer:

[tex]\sum\limits^{n=6}_{n=1} {(-4+8n)}[/tex] is the notation to represent the sum of first six terms of the sequence 4, 12, 20, ....

So, the option "the summation from n equals 1 to 6 of negative 4 plus 8 times n" is the correct option as:    [tex] \sum\limits^{n=N}_{n=1} {(-4+8n)}[/tex].

Step-by-step explanation:

Let us consider the sequence

4, 12, 20, ....

As d = 12-4 = 20 - 12 = 8

Hence, the sequence is an arithmetic as the common difference between consecutive terms is same (constant).

So,

For the arithmetic sequence,

a, a + d, a + 2d, a + 3d.........a + (n - 1)d

The nth term = a + (n - 1)d

a = first term, d = common difference

For the given sequence 4, 12, 20,...

a = 4, d = 8

Lets put these values in Summation Formula.

Sigma notation to represent the sum of the first six terms of the following sequence:  [tex] \sum\limits^{n=N}_{n=1} {a+(n-1)d}[/tex]

⇒   [tex] \sum\limits^{n=N}_{n=1} {4+(n-1)8}[/tex]

⇒   [tex] \sum\limits^{n=N}_{n=1} {(4+8n-8)}[/tex]

⇒   [tex] \sum\limits^{n=N}_{n=1} {(-4+8n)}[/tex]

Hence, [tex]\sum\limits^{n=6}_{n=1} {(-4+8n)}[/tex] is the notation to represent the sum of first six terms of the sequence 4, 12, 20, .....

So, the option "the summation from n equals 1 to 6 of negative 4 plus 8 times n" is the correct option as:  [tex] \sum\limits^{n=N}_{n=1} {-4+8n}[/tex].

Keywords: sigma notation, arithmetic sequence, series

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Answer:

the summation from n equals 1 to 6 of negative 4 plus 8 times n

Answer:

40 mg

Step-by-step explanation:

Given,

The prescribed dosage the medicine for an adult = 180 milligrams,

Since, the minimum age of an adult = 18 years,

So, the prescribed dosage of the medicine for 18 years old person = 180 milligrams,

Thus, the ratio of prescribed dosage of medicine ( in mg ) and age of person ( in years ) = [tex]\frac{180}{18}[/tex]

Suppose prescribed dosage of a certain medicine for a child 4 years old is x mg,

So, ratio of prescribed dosage of medicine and age = [tex]\frac{x}{4}[/tex]

[tex]\frac{x}{4}=\frac{180}{18}[/tex]

[tex]\frac{x}{4}=10[/tex]

[tex]\implies x = 4\times 10 = 40[/tex]

Hence, the prescribed dosage of a certain medicine for a child 4 years old would be 40 mg.

Please see the attachment below.

All the information is in the problem you just have to format it into an equation.

Point slope form: [tex]y_{2}- y_{1}=m(x_{2}- x_{1})[/tex] where "m" is the slope.

The equation would look like...

y+9=-2(x-10)

Answer:

62.28

Step-by-step explanation:

Answer:

y = 0.7865x + 0.2413  

Step-by-step explanation:

[tex]\begin{array}{rrc}\mathbf{x} & \mathbf{y} & \mathbf{\log(y)}\\1 & 13 & 1.114\\2 & 55 & 1.740\\3 & 349 & 2.543\\4 &2407 & 3.381\\5 &16813 & 4.226\\\end{array}[/tex]

I plotted both your original and transformed data in Excel and asked it to display the regression equation for the transformed data.

Your original data are the blue line plotted against the left-hand axis.

Your transformed data are the red line, plotted against the right-hand axis.

The linear regression equation is

y = 0.7865x + 0.2413

The answer is y = 0.7865x + 0.2413  

The Linear regression equation for the transformed data:

We transform the predictor (x) values only. We transform the response (y) values only. We transform both the predictor (x) values and response (y) values.

Find the linear regression equation for the transformed data?

(1, 13) 1.114

(2, 55) 1.740

(3, 349) 2.543

(4, 2407) 3.381

(5, 16, 813) 4.226

X            Y           Log(y)

1              13           1.114

2             55         1.740

3             349       2.543

4             2407     3.381

5             16813    4.226

The linear regression equation is y = 0.7865x + 0.2413  

The graph is plotted below:

Original data are the blue line plotted against the left-hand axis and transformed data are the red line, plotted against the right-hand axis.

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[tex]\text{The constant of variation is a fancy word for rate of change}\\\\\text{You're trying to find the rate of change in this scenario, which would}\\\text{be your constant of varaition}\\\\\text{To find this, we need to know how much he makes each hour}\\\\\text{Find this by dividing 175 by 15:}\\\\175\div15= 11.666\\\\\text{Round to the nearest hundredths}\\\\11.67\\\\\boxed{\text{Constant of variation: 11.67}}[/tex]

Based on the information given the constant of variation is 11.67.

Using this formula

Constant of variation=Amount earned/Time

Where:

Amount earned=$175

Time=15 hours

Let plug in the formula

Constant of variation=$175/15

Constant of variation=11.66

Constant of variation=11.67 (Approximately)

Inconclusion  the constant of variation is 11.67.

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Answer:

2020

Step-by-step explanation:

This is an example of what is called an "infinite continued fraction".

For the repeated fraction:

y = 2019 / (2 + 2019 / (2 + 2019 / (2 + 2019 / ...

We can rewrite using substitution:

y = 2019 / (2 + y)

Solving for y:

y (2 + y) = 2019

2y + y² = 2019

y² + 2y + 1 = 2020

(y + 1)² = 2020

y + 1 = ±√2020

y = -1 ± √2020

Since the repeated fraction must be positive, y = -1 + √2020.

Therefore:

x = (1 + y)²

x = (1 + -1 + √2020)²

x = 2020

Answer:

The dimensions of the desk are

Length: 54 inches

Width: 30 inches

Step-by-step explanation:

we know that

The area of rectangle is equal to

[tex]A=LW[/tex]

where

L is the length

W is the width

we have

[tex]A=1,620\ in^2[/tex]

so

[tex]1,620=LW[/tex] ----> equation A

[tex]L=W+24[/tex] ----> equation B

substitute equation B in equation A

[tex]1,620=(W+24)W[/tex]

solve for W

[tex]1,620=W^2+24W[/tex]

[tex]W^2+24W-1,620=0[/tex]

Solve the quadratic equation by graphing

The solution is W=30 in

see the attached figure

Find the value of L

[tex]L=30+24=54\ in[/tex]

therefore

The dimensions of the desk are

Length: 54 inches

Width: 30 inches

Answer:

Step-by-step explanation:

[tex]-2-2(-7+b)=-8b+24\qquad\text{use the distributive property}\\\\-2+(-2)(-7)+(-2)(b)=-8b+24\\\\-2+14-2b=-8b+24\qquad\text{combine like terms}\\\\(-2+14)-2b=-8b+24\\\\12-2b=-8b+24\qquad\text{subtract 12 from both sides}\\\\12-12-2b=-8b+24-12\\\\-2b=-8b+12\qquad\text{add}\ 8b\ \text{to both sides}\\\\-2b+8b=-8b+8b+12\\\\6b=12\qquad\text{divide both sides by 6}\\\\\dfrac{6b}{6}=\dfrac{12}{6}\\\\b=2[/tex]

Question:

At noon a tank contains 6 cm of water after several hours it contains 3 cm of water what is the percent decrease of water in the tank

Answer:

The percent Decrease of water in the tank  is 50%

Step-by-step explanation:

Given:

Initial amount of water in the tank at the noon = 6 cm

amount of water remained in water after several hours = 3 cm

To Find:

The percent decrease =?

Solution:

The percent decrease in the tank

=>[tex]\frac{\text {water present after some hours }}{\text {initial water contained in the tank }} \times 100[/tex]

Substituting the values

=>[tex]\frac{3}{6} \times 100[/tex]

=>[tex]\frac{1}{2} \times 100[/tex]

=>[tex]\frac{100}{2}[/tex]

=> 50

Answer:

g>=-12

Step-by-step explanation:

g+11>=-1

g>=-1-11

g>=-12

Answer:

Stacy is 13 meters apart from Christopher.

Step-by-step explanation:

Given:

Austin is hiding 12 meters south of Stacy.

Christopher is hiding 5 meters east of Austin.

To find distance between Stacy and Christopher.

Solution:

From the given data, we will trace the positions of each as shown in the figure below.

We find that the distance between Stacy and Christopher is the hypotenuse side of a right triangle formed by their positions.

By Pythagorean theorem:

[tex]Hypotenuse^2=Leg1^2+Leg2^2[/tex]

From the triangle:

Leg 1 = 5 meters

Leg 2= 12 meters

Plugging in the values.

[tex]Hypotenuse^2=5^2+12^2[/tex]

Simplifying.

[tex]Hypotenuse^2=25+144[/tex]

[tex]Hypotenuse^2=169[/tex]

Taking square root both sides.

[tex]\sqrt{Hypotenuse^2}=\sqrt{169}[/tex]

[tex]Hypotenuse=13[/tex] meters

Thus, distance between Stacy and Christopher = 13 meters

Stacy and Christopher are 13 meters apart. This was calculated using the Pythagorean theorem to find the hypotenuse of a right triangle with sides 12 meters and 5 meters.

To determine the distance between Stacy and Christopher, we need to view Stacy's location and the hiding places of Austin and Christopher as points on a grid in which Stacy is at the origin. Since Austin is hiding 12 meters south of Stacy, we can consider him to be at point A(0, -12). Christopher is hiding 5 meters east of Austin, this makes him at point C(5, -12).

Now, to find the distance between Stacy and Christopher, we'll use the Pythagorean theorem which says that in a right-angled triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. This can be written as:

C² = A² + B²

Where C is the hypotenuse, A and B are the other two sides of the triangle. In this case, A is the distance south (12 meters) and B is the distance east (5 meters). Thus,

C² = 12² + 5²

C² = 144 + 25

C² = 169

C = √169

C = 13 meters

Therefore, Stacy and Christopher are 13 meters apart.

Answer:

D.3

Step-by-step explanation: The full line is equivelent to 3 if you look

Answer:

0.1513...

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

We know that negative numbers are smaller than positive numbers, so let's compare the 2 negative numbers. Unlike positive numbers, the more negative it has, the smaller it is. So we know the smallest is -20. Without looking at the other numbers (even though I did just in case) we know that this is correct. They say least to greatest, so -20 should be first. A is the only one that starts with -20.

Answer:

I think its 19,000/1

Step-by-step explanation:

I don't think there is any explanation :)

Answer:

The answer can be calculated by doing the following steps;

Step-by-step explanation:

Answer:

The approximate length of the radius is 3 feet

Step-by-step explanation:

Given:

circumference of a circle = 18.41 feet

To Find:

approximate length of the radius = ?

Solution:

Let the radius of the circle be r

We know that the circumference of the circle C is given by the formula

C =[tex]2 \pi R[/tex]

Substituting the values, we get

18.41 =[tex]2\times \pi \times R[/tex]

Rearraning the above equation we get

R=[tex]\frac{14.41}{ 2\times \pi}[/tex]

R=[tex]\frac{18.41}{6.28}[/tex]

R= 2.93

R= 3 (approx)

Answer:

256

Step-by-step explanation:

Answer:

Step-by-step explanation:he rate of return on Karen investment is 10%. Explanation: Given that. Bought price = P = $78500. Sale price = S =$850,000.