To raise money for charity, Carmen and her friends start the Pampered Pooch Pet Wash. The first day they are open, they forget to put up posters and only raise a little money. The next day, they hang posters all over the neighborhood and raise $55.50. In all, Carmen and her friends raise $65.50 on the first two days they are open.

Answers

Answer 1

Julie will reach her goal 21 days before Mary.

What is division?

Division is the process of splitting a number or an amount into equal parts. Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.

here, we have,

Mary and Julie both have a goal of raising $1000 for charity.

Mary raises money in every 4 days = $12.

In one day Mary raises money = 12/4

                                                   = $3

Mary needs time to reach her goal = 1000/3

                                                         = 333.33  ≈ 334 days

Julie raises money in every 6 days = $19

In one day Julie raises money = 19/6

                                                  = $3.1666 ≈ $3.2

Julie needs time to reach her goal = 1000/ 3.2

                                                          = 312.5 ≈ 313 days

Difference of the days between both of them to reach their goal

= 334 - 313 = 21 days  

Julie will reach her goal first, 21 days before Mary.

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Related Questions

(-2,1) (-8,-5) round nearest tenth

Answers

The slope of line from the points given is 1

What is the slope of line

The slope of a line is a measure of how steep the line is and the direction it is going. In mathematical terms, it is defined as the ratio of the change in the y-coordinate (rise) to the change in the x-coordinate (run) between two points on the line. Slope is often represented by the letter "m". If (x₁, y₁) and (x₂, y₂) are two points on the line, the slope can be calculated using the formula:

m = (y₂ - y₁) / (x₂ - x₁)

In this problem, we can take the two points and calculate the slope.

m =  (y₂ - y₁) / (x₂ - x₁)

Substituting the values into the formula to find the slope;

m = -5 - 1 / -8 - (-2)

m = 1

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Complete Question; Calculate the slope of the line (-2, 1) and (-8, -5)

The table shows the height of water in a pool as it is being filled. A table showing Height of Water in a Pool with two columns and six rows. The first column, Time in minutes, has the entries, 2, 4, 6, 8, 10. The second column, Height in inches, has the entries, 8, 12, 16, 20, 24. The slope of the line through the points is 2. Which statement describes how the slope relates to the height of the water in the pool? The height of the water increases 2 inches per minute. The height of the water decreases 2 inches per minute. The height of the water was 2 inches before any water was added. The height of the water will be 2 inches when the pool is filled.

Answers

The correct statement that describes how the slope relates to the height of the water in the pool is: The height of the water increases 2 inches per minute, the correct option is A.

What is the slope?

The slope is the ratio of the vertical changes to the horizontal changes between two points of the line.

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

where (x₁, y₁) and (x₂, y₂) are the two points that you are trying to find the slope between.

We are given that;

The time in minutes: 2, 4, 6, 8, 10

Height in inches: 8, 12, 16, 20, 24

Now,

The slope of the line through the points is 2, which means that for every 1 unit of time (in minutes) that passes, the height of the water in the pool increases by 2 units (in inches).

Therefore, by the given slope answer will be height of the water increases 2 inches per minute.

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What type of graph is shown, and what is the growth factor?
linear function; growth factor of 2
linear function; growth factor of 4
exponential function; growth factor of 2
exponential function; growth factor of 4

Answers

The graph is a linear function with a growth factor of 4

What is Slope of Line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

The graph has the shape of a straight line, so it is linear.

The graph starts at point (0, 0). It passes through point (1, 4).

slope = 4/1 = 4

The slope is 4. Growth factor is the same as slope for a linear function.

Hence, the graph is a linear function with a growth factor of 4

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Complete the equation of the line through
(

8
,

2
)
(−8,−2)left parenthesis, minus, 8, comma, minus, 2, right parenthesis and
(

4
,
6
)
(−4,6)left parenthesis, minus, 4, comma, 6, right parenthesis

Answers

The linear function through the points (-8,-2) and (-4,6) is given as follows:

y = 2x + 14.

How to define a linear function?

The slope-intercept definition of a linear function is given as follows:

y = mx + b.

In which:

The slope m represents the rate of change of the linear function.The intercept b represents the value of y when x = 0.

Given two points, the slope is calculated as the change in y divided by the change in x, hence:

m = (6 - (-2))/(-4 - (-8))

m = 8/4

m = 2.

Hence:

y = 2x + b.

When x = -8, y = -2, hence the intercept b is obtained as follows:

-2 = 2(-8) + b

b = 14.

Hence the equation is:

y = 2x + 14.

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Please help me. I am inept when it comes to math. thx

Answers

Note that the proof required is given based on the AA Similarity Postulate.

What are the definition of terms used in this solution?

Similar triangles: If two triangles are similar then their corresponding angles are equal.

By the transitive property of equality if a = b, and b= c then a = c.

AA postulate of similarity states that when two corresponding angles of two triangles are equal then they are called similar to each other.

Given ΔABC ~ ΔRST; and

ΔDEF ~ ΔRST

To Prove: ΔABC ~ DEF Note that:

ΔABC ~ ΔRST - Given

ΔDEF ~ ΔRST
- Given

∠A  = ∠R, ∠D = ∠R - Definition of Similar Triangles

∠C = ∠T, ∠F = ∠T

∠A= ∠C, ∠D = ∠F  - Transitive property of Equality; Thus,

ΔABC ~ Δ DEF (AA Similarity Postulate)

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Each student in a math class has to buy the items in the table. Write an expression in simplest form that represents the
total cost for x students.
Item
Calculator
Notebook
Pack of pencils
11.55
9.65x+0.65x+1.25x
11.55x
x(9.65+0.65+1.25)
Cost
$9.65
$0.65
$1.25

Answers

The expression in simplest form that represents the total cost for x students is 11.55x, the correct option is C.

What is an expression?

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

Given that a student in a math class has to buy the items in the table.

Now,

x(9.65+0.65+1.25)

=9.65x+0.65x+1.25x

=11.55x

Therefore, the expression in simplest form will be 11.55x.

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Gracie deposited $20,000 into an account that compounds interest weekly at a rate of 1.56%. Each week, her bank withdraws $200 from the account and puts that amount into her mortgage account. How long will it take until the account has a balance of $0? Round to the nearest tenth of a year.

Answers

It takes 2 years for the account balance to come down to 0.

What is the compound interest?

Compound interest is the interest on savings calculated on both the initial principal and the accumulated interest from previous periods.

The formula used to find the compound interest = [tex]A=P(1+\frac{r}{100})^{nt}[/tex].

Given that, principal =$20,000, rate of interest =1.56%, n=52 and W=$200.

Use the formula, [tex]P=W\frac{1-(1+\frac{r}{n})^{-nt} }{\frac{r}{n} }[/tex]

[tex]20000=200\frac{1-(1+\frac{0.0156}{52})^{-52t} }{\frac{0.0156}{52} }[/tex]

[tex]100=\frac{1-(1+0.0003)^{-52t}}{0.0003}[/tex]

[tex]0.03=1-(1.0003)^{-52t}[/tex]

[tex]0.97=(1.0003)^{-52t}[/tex]

Take log on both the side, we get

-52t·log(1.0003)=log0.97

So, t=2 years

Therefore, it takes 2 years for the account balance to come down to 0.

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Suppose ABC is a right triangle, and cos (B) =a/c, which of the following much also be true ?

Answers

Answer:

option 1 --> sec A = c/a

option 3 --> sin(b) = b/c

option 4 --> Sin(A) = a/c

Step-by-step explanation:

Since cos is adjacent, we know the legs are a and b and the hypotenuse is c

For angle B

sin (opposite over hypotenuse) = b/ctan (opposite over adjacent) = b/acsc (hypotenuse over opposite) = c/bsec (hypotenuse over adjacent) = c/bcot (adjacent over opposite) = a/b

For Angle A

sin = a/ccos = b/ctan = a/bcsc = c/asec = c/bcot = b/a

Find the volume.
(Pls help…. I’ve tried many times but ain’t near the answer)

Answers

The volume of the composite figure is equal to 1395 square inches.

How to determine the volume of the composite figure

In this problem we need to determine the volume of a composite figure, which is the result of combining the volumes of a right prism and a pyramid, whose volume formulas are listed below:

Pyramid

V = (1 / 3) · w · l · h

Prism

V = w · l · h

Where:

w - Width, in inchesl - Length, in inchesh - Height, in inches

Now we proceed to determine the volume of composite solid:

V = (9 in) · (15 in) · (7 in) + (1 / 3) · (15 in) · (9 in) · (10 in)

V = 1395 in³

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4 divided by an eighth

Answers

Answer:

32

Step-by-step explanation:

What is the value of 300m in miles

Answers

Answer:

Step-by-step explanation:0.18

Help for those questions please

Answers

The evaluation of the expressions are shown below

How to evaluate the expressions

To determine the solution to the expressions, we make use of laws of indices and exponents

Expression 1 (a) and (b)

(27)^(-4/3) ÷ (1/64)^(2/3) = (3^3)^(-4/3)  ÷ (1/4^3)^(2/3)

(27)^(-4/3) = (3)^(-4)  ÷ (1/4)^(2)

(27)^(-4/3) = 1/81 ÷ 1/16

So, we have

(27)^(-4/3) = 16/81

Next, we have

(32)^(2/5) - (-125)^(-1/3) = (2^5)^(2/5) - (-5^3)^(-1/3)

(32)^(2/5) - (-125)^(-1/3) = (2)^(2) - (-5)^(-1)

(32)^(2/5) - (-125)^(-1/3) = 4 + 1/5

(32)^(2/5) - (-125)^(-1/3) = 21/5

Equation (2)

Here, we have

3(8/27)^(-2/3) = 2^x/3^y

So, we have

3(3/2)^(2) = 2^x/3^y

So, we have

3^3/2^2 = 2^x/3^y

By comparison, we have

x = -2 and y = 3

Equation (3)

Here, we have

3^x(9^[1 - x]) = 27^[x + 2]

So, we have

3^x(3^2[1 - x]) = 27^[x + 2]

This gives

3^(x + 2[1 - x]) = 3^3[x + 2]

By comparison, we have

x + 2[1 - x] = 3[x + 2]

So, we have

x + 2 - 2x = 3x + 6

Evaluate

4x = -4

x = -1

Equation (4)

Here, we have

(5^x)^2x = 25(1/125)^x

So, we have

(5)^2x^2 = 5^[2 - 3x]

By comparison, we have

2x^2 = 2 - 3x

So, we have

2x^2 + 3x - 2 = 0

Evaluate

x = -2 and x = 1/2

Equation (5)

Here, we have

2^x+1 + 2^3-x = 10

Here, we make use of a graphing tool

So, we have

x = 0 and x = 2

Expression (6)

Here, we have

√16^x+2

Express 16 as 2^4

So, we have

√16^x+2 = √2^4[x+2]

Take the square roots

√16^x+2 = 2^2[x+2]

Open the bracket

√16^x+2 = 2^2x+4

Hence, the expression is 2^2x+4

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8x - 7y = 56
plot on the graph

Answers

Answer: put tow points, 1  on the x-axis (horizontal) and the other 1 on y-axis (vertical).

x = 7

y = -8

and you make a straight line , connecting them

can someone help me with this question the letter a b or c or d

Answers

Answer:

The answer is D

Step-by-step explanation:

because u need to divide the y and x and when u do it to all of them u will get the same ratio which is 4

In many classes, a passing test grade is 60 (A = 60). Using the formula A = 10 R,
what raw score (R) would a student need to get a passing grade after her score is
adjusted?

Answers

A student need a raw score of 36.

How to determine the raw score (R) of the student?

We can find the raw score (R) of the student by substituting A = 60 into the the formula and then solve for R. That is:

A = 10√R

√R = 60/10

√R = 6

R = 6²

R = 36

Thus, a student need a raw score of 36 to get a passing grade after her score is adjusted.

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how to find focus of parabola

Answers

(h, k+1/4a) are the coordinates for the focus of parabola. And the standard form is (x - h)2 = 4p (y - k).

To get the focus of a parabola, you must be aware that the equation of a parabola in a vertex form is y=a(xh)2+k, where a denotes the slope of the equation. The center of the parabola is at (h, k+1/4a), according to the formula. The focal point of the parabola is its axis. The centre of a parabola is 'a' units away from the vertex. The vertex and the focus are positioned on the parabola's axis, which you may identify using the equation for the parabola.

The axis of the parabola with a second-degree x equation is the y axis, or a line parallel to it, whereas the axis of the parabola with a second-degree y equation is the x axis, or a line parallel to it.

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Find the measure of the missing angle

Answers

Answer:

a = 149 degrees

Step-by-step explanation:

Angles must add up to 180 degrees so,

180 - 31 = 149.

The original cost of a shirt is $40. A store manager marks up the cost by 20% to get
the selling price. During a sale, the store manager marks down the cost of the shirt
by 20%. What is the percent change from the original cost to the sale price? Is this
a percent increase or a percent decrease? Show your work.

Answers

Answer:

Step-by-step explanation:

Ans:percentage increased by 20

Gross profit/Cost of sales=20percent

Gross profit=20percent x cost of sales

Sales=120percent x cost of sales

Sales=120x40

        =$48

48-40=$8

8/40x100percent=20percent

Answer: Decrease? not 100% sure

Step-by-step explanation:

using diagonals from a common vertex, how many triangles could be formed from a 21-gon?

Answers

Total 816 triangles that can be formed using diagonals from a common vertex of a 21-gon.

What are Diagonals?

In mathematics, a diagonal is a line joining two vertices of a polygon or solid whose vertices do not lie on the same edge. Diagonals are generally defined as oblique lines or slanted lines connecting the vertices of a shape. A diagonal is defined as a horizontal shape with sides/edges and corners. 

Solution of the given problem:

Firstly, choose 3 vertices of 21-gon which are not adjacent to each other.

Secondly, connect all three vertices to a common vertex.

Now, there are 18 vertices that are not adjacent to common vertex and there are now 18 diagonals that can be drawn to the common vertex up to these vertices.

To form a triangle using these diagonals, we need to choose 3 of these 18 vertices, this can be calculated using the binomial coefficient formula:

18 choose 3 = 18! / (3! * (18 - 3)!) = (18 * 17 * 16) / (3 * 2 * 1) = 816

Thus, total 816 triangles can be formed.

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The average of your first 6 tests is 82. If your test average after your seventh test is an 80. 5, what did you score on the seventh test?.

Answers

The score on the seventh test is 71.5

"Information available from the question"

The average of your first 6 tests is 82.

If your test average after your seventh test is an 80. 5

To find the score on the seventh test.

Now, According to the information:

Average of 6 test is 82

We know that :

Average = Sum of all test / Total no. of test => 82 =  Sum of all test / 6

Sum of all test = 492

Let the seventh test be 'x'

So, Sum of seventh test is = 492 + x

Average = [tex]\frac{492+x}{7}[/tex]

80.5  = [tex]\frac{492+x}{7}[/tex]

=> 80.5 × 7 = 492 + x

x =  (80.5 × 7) - 492

=> x = 563.5 - 492

x = 71.5

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select all expressions that are equivalent to 2to the power of 4 / ((3.2 x 0.8) + 1.44)

Answers

The value of the given expression will be 4.


What is an expression?

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

Given that the expression is 2⁴ / ( 3.2 x 0.8 0 + 1.44 ). SOlve the expression as below,

E = 2⁴ / ( 3.2 x 0.8 ) + 1.44 )

Solve the denominator by mathematical operation.

E = 16 / ( 2.56 + 1.44 )

Divide the numerator by denominator,

E = 16 / 4

E = 4

Therefore, the solution of the expression is 4.

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Help with geometry. Given ABC is congruent to MNO. m < A = 51 , m < N = 67 , and m < B = (2x + 7) What is the value of x?

Answers

The value of x is given as follows:

x = 30.

What are similar triangles?

Similar triangles are triangles that share these two features presented as follows:

Congruent angle measures.Proportional side lengths.

For the two similar triangles, we have that B and N are equivalent angles, hence they are congruent and the value of x is given as follows:

2x + 7 = 67

2x = 60

x = 60/2

x = 30.

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015 Chapter 1: Perimeter and Area in the Coordinate Plane > Section Exercises 1.4> Exercise 8
8
Find the perimeter of the polygon with the vertices Q(-3, 2), R(1, 2), S(1,-2), and T(-3,-2)
The perimeter is
units

Answers

The perimeter of the polygon with vertices Q(-3, 2), R(1, 2), S(1,-2), and T(-3,-2) is 16 units.

What is the perimeter?

Perimeter is a circumferential measure of the figure, for example, the perimeter of a square is the sum of all its sides.

Here,

To find the perimeter of a polygon, we need to add up the lengths of all its sides. In this case, we have a quadrilateral with vertices Q(-3, 2), R(1, 2), S(1,-2), and T(-3,-2).

We can use the distance formula to find the lengths of each side:

Length of QR = √[(1 - (-3))² + (2 - 2)²] =  4

Similarly,

Length of RS= 4

Length of ST= 4

Length of TQ= 4

Therefore, the perimeter of the polygon is 4 + 4 + 4 + 4 = 16

So the perimeter of the polygon with vertices Q(-3, 2), R(1, 2), S(1,-2), and T(-3,-2) is 16 units.

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Which function will approach positive infinity the fastest?
O f(x)= 100(1.5)*
O f(x) = 100x5 + 200x³ + 100
Of(x) = 200(1.45)*
O f(x) = 200x3 + 100x² + 100

Answers

Answer:

Step-by-step explanation:

fx

i don’t understand how to get answer

Answers

Answer:

You probably know that it is a good idea to brush your teeth every day. What does this do that helps prevent tooth decay?

Step-by-step explanation

factor each polynomial by grouping
^(3)+4x^(2)+2x+8

4b^(3)-6b^(2)+10b-15

2m^(3)+4m^(2)+6m+12

7r^(3)-35r^(2)+6r-30

10a^(3)+4a^(2)+5a+2

Answers

The required factor each polynomial by grouping are factored.

What are polynomials?

A polynomial is an algebraic expression in which the operators "+" and "-" are used to separate terms, and the exponents of the variables are consistently non-negative integers. Polynomials include, for instance, x² + x + 5, y² + 1, and 3x³ - 7x + 2.

According to question:1)

1) [tex]x^3+4x^2+2x+8[/tex]

can be factored by grouping as:

[tex]x^3 + 2x + 4x^2 + 8[/tex]

= [tex]x(x^2+2) + 4(x^2+2)[/tex]

= [tex](x+4)(x^2+2)[/tex]

2) [tex]4b^3-6b^2+10b-15[/tex]

can be factored by grouping as:

[tex]2b^2(2b-3)+5(2b-3)[/tex]

=[tex](2b-3)(2b^2+5)[/tex]

3)[tex]2m^3+4m^2+6m+12[/tex]

can be factored by grouping as:

[tex]2m^2(m+2) + 6(m+2)[/tex]

= [tex](2m^2+6)(m+2)[/tex]

= [tex]2(m^2+3)(m+2)[/tex]

4) [tex]7r^3-35r^2+6r-30[/tex]

can be factored by grouping as:

[tex]7r^2(r-5)+6(r-5)[/tex]

=[tex](7r^2+6)(r-5)[/tex]

[tex]10a^3+4a^2+5a+2[/tex]

can be factored by grouping as:

[tex]2a^2(5a+2)+1(5a+2) = (2a^2+1)(5a+2)[/tex]

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what should a good residual plot look like if the regression line fits the data well?

Answers

A good residual plot should have the points randomly scattered around the horizontal line with no discernible pattern.

This indicates that the model is well fit to the data. The residuals should also be equally distributed on either side of the horizontal line. This can be seen as the sum of the residuals being equal to 0, or mathematically expressed as the sum of the residuals (e) being equal to 0, where [tex]e = y - ŷ[/tex], where y is the observed value and ŷ is the predicted value. The equation can be expressed as Σe=0.

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What is the value of root 216?

Answers

Answer: The square root of 216 is equal to approximately 6.485281.

Step-by-step explanation:

The square root of 216 is equal to the number that, when multiplied by itself, gives 216. The value of the square root of 216 can be found using several methods, including estimation, the long division method, and a calculator. Here, I'll provide a step-by-step explanation using estimation.

Step 1: Estimate the value of the square root.

One way to estimate the value of the square root of 216 is to find two perfect squares that are close to 216, and whose square roots are therefore close to the square root of 216. In this case, the perfect squares closest to 216 are 144 (12^2) and 225 (15^2). Since 216 is closer to 144, the square root of 216 is likely to be closer to 12 than to 15.

Step 2: Refine the estimate.

To refine the estimate of the square root of 216, we can average the two closest perfect squares and their square roots. In this case, the average of 12 and 15 is 13.5, and this is a better estimate of the square root of 216 than either 12 or 15 alone.

Step 3: Improve the estimate using a more precise method.

One method for finding an even more precise estimate of the square root of 216 is to use the Newton-Raphson formula for finding square roots. This formula involves repeatedly applying the following equation:

x_n+1 = (x_n + n/x_n) / 2,

where x_n is the nth estimate of the square root, and n is the number whose square root we are trying to find (in this case, n = 216). We can start with an initial estimate, such as x_0 = 13.5, and iterate the formula until the estimate converges to a desired level of precision.

Step 4: Use a calculator or other tools to find the exact value.

Finally, we can use a calculator or computer program to find the exact value of the square root of 216 to as many decimal places as desired. The exact value of the square root of 216 is equal to approximately 6.485281.

Someone please help me!!​

Answers

Answer:

84 units

Step-by-step explanation:

The darkest shaded face has 12 full units. Times that by the width or the lightest shade area (7) you get the answer 84 units.

12(7) = 84

An antique dresser was $115, but is on sale for
30% off. If there is a 10% tax added to the sale
price, how much will the dresser cost?

Answers

Answer:

$88.55

Step-by-step explanation:

First find how much the 30% off discount will be.

115 x 0.30 = 34.5

Subtract it from original price

$115 - 34.5 = $80.5

Now find the 10% tax

80.5 x 0.10 = 8.05

Add that to the price

$80.5 + 8.05 = 88.55

The dresser's final sale price is $88.55

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