I don’t know how to simplify this fully;15x/5xy

Charles has to mow at least 11 lawns before he starts to make a profit. To determine the number of lawns Charles has to mow before he starts to make a profit, we need to find the value of x when the profit becomes positive.

Let's define the variables:

x: Number of lawns mowed

y: Profit (revenue - expenses)

The revenue generated from mowing x lawns is given by:

Revenue = $30 * x

The total expenses incurred from mowing x lawns is given by:

Expenses = $260 (for the lawn mower) + $5 * x (for gas per lawn)

The profit is calculated as the revenue minus the expenses:

Profit = Revenue - Expenses

Now, we can write the system of equations:

Equation 1: Revenue = $30 * x

Equation 2: Expenses = $260 + $5 * x

Equation 3: Profit = Revenue - Expenses

To determine the number of lawns Charles has to mow before he starts to make a profit, we need to find the value of x when the profit becomes positive. In other words, we need to find the solution for Equation 3 where Profit > 0.

By substituting the expressions for Revenue and Expenses into Equation 3, we have:

Profit = ($30 * x) - ($260 + $5 * x)

Profit = $30x - $260 - $5x

Profit = $25x - $260

Now, we set Profit > 0 and solve for x:

$25x - $260 > 0

$25x > $260

x > $260 / $25

x > 10.4

Since the number of lawns mowed cannot be a decimal, Charles needs to mow at least 11 lawns before he starts to make a profit. Therefore, the answer is that Charles has to mow at least 11 lawns before he starts to make a profit.

learn more about total expenses here: brainly.com/question/31261431

#SPJ11

Answer:

Difference

Step-by-step explanation:

The Difference of boys and girls in the school coyld change the ratios

Answer:

Find the vector that translate A (-2, 7) to A’ (6, 4) is <8,-3>

Step-by-step explanation:

A (x,y) -> A' (x+p , y+q)

x = -2

-2 + p = 6        p = 8

7 + q = 4          q = -3

Answer:

75°

Step-by-step explanation:

Given

ADC=134°

So the equation is

5x+4+7x-2=134

12x+2=134

12x=134-2

12x=132

x=11

So BDC=

7.11-2

77-2

75

Answer:

m∠BDC = 75°

Step-by-step explanation:

m∠ADC =134°

m∠ADB+m∠BDC = m∠ADC

5x +4 +7x -2 = 134

12x = 134 -2

x= 132/12 = 11

m∠BDC = 7x -2 = 7*11 -2 = 77-2 = 75°

To find the volume of a solid, we need to know its shape and dimensions. If the solid is composed of prisms, pyramids, and cones that are right, we can use the appropriate formulas to calculate their volumes. Once we have the volumes of each individual shape, we can add them together to find the total volume of the solid.

It's important to note that when rounding the answer to two decimal places, we should look at the third decimal place and round up if it is 5 or higher. For example, if the calculated volume is 12.345, rounding to two decimal places would give us 12.35.

In summary, to find the volume of a solid composed of right prisms, pyramids, and cones, we use the appropriate formulas for each shape and add the volumes together. We then round the final answer to two decimal places, rounding up if necessary.  

To know more about volume visit

https://brainly.com/question/27710307

#SPJ11

Without knowing what the dropdown list shows for reasons, it's hard to pinpoint exactly what is expected here.

Angle ACD is congruent to angle BCD because they are corresponding angles between the congruent triangles ∆ACD and ∆BCD.

The triangle congruency is due to angle-angle-side (AAS) similarity:

• angles A and B are congruent - this is given

• angles CDB and CDA are congruent right angles - this is implied by the given detail that CD and AB are perpendicular

• the leg CD is common to both triangles, and CD is of course congruent to itself (reflexive property)

So angles ACD and BCD are congruent, which means they have the same measure, so by definition of angle bisector, CD bisects angle ACB.

QED

Integral for the volume of the solid obtained by rotating the region bounded by the curves is  ∫[a to b] 2πx * (4x - x^2 - x) dx.

To set up an integral for the volume of the solid obtained by rotating the region bounded by the curves y = x and y = 4x - x^2 about the line x = 7, we need to use the method of cylindrical shells.

The cylindrical shells method involves integrating the circumference of each cylindrical shell multiplied by its height. In this case, the height of each cylindrical shell is given by the difference between the two curves, y = 4x - x^2 and y = x.

The radius of each shell is the distance from the line of rotation, x = 7, to the curve x. Therefore, the integral for the volume can be set up as follows:

Volume = ∫[a to b] 2πx * (4x - x^2 - x) dx

The limits of integration, a and b, are determined by the points of intersection between the two curves, which can be found by setting the equations equal to each other and solving for x.

To learn more about integral click here: brainly.com/question/31744185

#SPJ11

The given statement, "In a contingency table, when all the expected frequencies equal the observed frequencies the calculated statistic equals zero" is true because when all the expected frequencies equal the observed frequencies, the calculated statistic equals zero.

A contingency table is a table used in statistics that shows the distribution of one variable in rows and another variable in columns. It is also known as a cross-tabulation table or a two-way frequency table. In a contingency table, expected frequencies are calculated based on the assumption that there is no association between the variables being analyzed.

Observed frequencies, on the other hand, are the actual frequencies of the data being analyzed. When all the expected frequencies in a contingency table are equal to the observed frequencies, it means that there is no association between the variables, and the calculated statistic equals zero. This is because the difference between the observed and expected frequencies is used to calculate the statistic, and if there is no difference, the statistic will be zero.

Therefore, the statement "In a contingency table, when all the expected frequencies equal the observed frequencies the calculated statistic equals zero" is true.

Learn more about the contingency table:

https://brainly.com/question/30022349

#SPJ11

The solution of the DTDS is xn = (0.63)^n * 41 grams, where n represents time in hours.

a) The updating function f(x) for the discrete time dynamical system (DTDS) can be derived from the given information that the body eliminates 37% of the alcohol present in the body per hour.

Since 37% of the alcohol is eliminated, the amount remaining after one hour can be calculated by subtracting 37% of the current amount from the current amount. This can be expressed as:

f(x) = x - 0.37x

Simplifying the equation:

f(x) = 0.63x

b) The initial condition for the DTDS is given as Peter having 41 grams of alcohol in his body after consuming three alcoholic drinks. Therefore, the initial condition is:

x0 = 41 grams

c) To find the solution of the DTDS with the given initial condition, we can use the updating function f(x) and iterate it over time.

For n hours, the solution is given by:

xn = f^n(x0)

Applying the updating function f(x) repeatedly for n times:

xn = f(f(f(...f(x0))))

In this case, since the function f(x) is f(x) = 0.63x, the solution can be written as:

xn = (0.63)^n * x0

Substituting the initial condition x0 = 41 grams, the solution becomes:

xn = (0.63)^n * 41 grams

Learn more about function at: brainly.com/question/30721594

#SPJ11

Answer:

The answer for me would be a) exactly 4 of them have red hair

Step-by-step explanation:

being that there is 26 percent of people in Gingerland that gave red hair I cam assume that that is a lot of people being that Gingelrand is like a city/town so exactly 4 of them is what I assume is the amswer

Answer:

664

Step-by-step explanation:

651 - - 13

Negative times negative is positive.

651 + 13

Add.

664

Answer:

664

Step-by-step explanation:

651 - (-13)

Do the keep , change , change method

So , it will be :

651 + 13 = 664

Hope this helps and plsss plss amrl as brianliest and THNXX :)

Answerc

Step-by-step explanation:

Answer:

Step-by-step explanation:  a

Answer: 3 m/s

Step-by-step explanation:

Given

the balloon rises up to a height of 90m in 30 sec

So, speed of balloon is \(v=\frac{\text{Distance}}{\text{time}}\)

\(v=\frac{90}{30}=3\ m/s\)

ANSWER

x = 15, y = 30

EXPLANATION

We want to solve the system of equations by substitution method.

We have that:

y = x + 15

y = 2x

Substitute the value of y in the second equation into the first:

=> 2x = x + 15

Collect like terms:

2x - x = 15

x = 15

Recall that:

y = 2x

=> y = 2(15)

y = 30

The solution to the system of equations is: x = 15, y = 30

The following statements are true:

Segment DEF is parallel to ABC

The line segment  AB is parallel to DE

Line FC is parallel to AD

the line that is skewed to DE is BC

One of the first areas of mathematics is geometry, along with arithmetic. It is concerned with spatial characteristics like the separation, shape, size, and relative placement of objects.

The given diagram is a triangular prism. From the diagram, some of the sides are parallel to each other (that is facing each other directly)

Some of the lines are also parallel to each other. From the given diagram, the sides that are parallel to each other are;

DEF is parallel to ABC

CADF is parallel to CBEF

For the lines, the lines that are parallel to each other are:

AD is parallel to BE

AB is parallel to DE

FC is parallel to AD

Skew lines are straight lines that do not intersect and are not in the same plane. Hence the line that is skewed to DE is BC

The missing image is attached with the answer below.

Learn more about parallel and skew lines here: brainly.com/question/18013592

#SPJ1

Step-by-step explanation:

diameter =20inches

radius =20/2=10 in

Surface area of sphere, A = 4πr²

π=3.14

area = 4×3.14×(10)²

area=1,256 in²

The first two approximations are y(0.2) ≈ 2.4 and y(0.4) ≈ 1.92.

Euler's method is a numerical method used to approximate the solutions of ordinary differential equations (ODEs) with a given initial value.

The method involves breaking down the solution into smaller intervals and approximating the solution at each interval using the derivative at the current point. Specifically, for the initial value problem y'(t) = f(t,y(t)), y(t0) = y0, with a time step size of delta t, Euler's method proceeds as follows:

y1 = y0 + delta t * f(t0, y0)

In the given problem, the ODE to be solved is y'(t) = -y and the initial value is y(0) = 3. Therefore, we have f(t,y) = -y and y0 = 3. The time step size is given as delta t = 0.2, which means we need to compute the values of y at t = 0.2 and t = 0.4 using Euler's method.

Applying the formula for the first approximation, we get:

y1 = y0 + delta t * f(t0, y0) = 3 + 0.2 * (-3) = 2.4

So, the first approximation of y at t = 0.2 is y1 = 2.4.

For the second approximation, we need to use y1 as the initial value and compute y2 as follows:

y2 = y1 + delta t * f(t1, y1) = 2.4 + 0.2 * (-2.4) = 1.92

Therefore, the second approximation of y at t = 0.4 is y2 = 1.92.

To know more about Euler's method,

brainly.com/question/30330754

#SPJ11

Answer:

$526.3 is the monthly payment

Step-by-step explanation:

We use the compound interest formula to calculate the total amount payable on the loan.

Mathematically;

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

Where A is the amount to pay

P is amount borrowed = 22,000

r is interest rate = 7.25/100 = 0.0725

t is years = 5 years

n is the number of times we compound lee year = 12 times since it’s monthly

Substituting these values, we have

A = 22,000(1 + 0.0725/12)^(12)(5)

A = 22,000(1 + 0.006041666666667)^60

A = $31,578

Monthly payment is total amount/ number of months

There are sixty months in 5 years

So monthly payment is 31578/60 = $526.3

Answer:

4

Step-by-step explanation:

You can determine the y-intercept by looking at the graph and see where the line intersects the y-axis at. Therefore, the y-intercept is 4

Answer:

I think maybe 3

Answer:

Step-by-step explanation:

Since he's applying stain (painting) he must be doing only the surface.

Finding the surface area:

33x18=594

33x15=495

18x15=270

594+495+270=

1359 square inches

We will then x2 1359 since we found the area for 1/2 of the box.

It is: 2718

Answer:

four tablespoons to make 6 cups of popcorn.

Step-by-step explanation:

1.5 is nine Equals 2.25 x. And then divide both sides by 2.25. That gives you four tablespoons to make 6 cups of popcorn.

The probability that a randomly chosen applicant has over 5 years of experience is 0.2768.

It should be noted that probability simply has to do with the likelihood that an event will happen.

From the information, out of 457 applicants for a job, 271 have over 5 years of experience and 75 have over 5 years of experience.

Therefore, the probability that a randomly chosen applicant has over 5 years of experience will be:

= Number of graduate over 5 years / Number of people over 5 years experience

= 75 / 271

= 0.2768

Learn more about probability on:

brainly.com/question/24756209

#SPJ1

0.00345    is the value of p(x).

What means binomial distribution?

P(x₁= 2 , x₂ = 2 , x₃ = 5 )

p( x₁= 2) . p(  x₂ = 2) . p( x₃ = 5)        .........( as these are independent variable)

[c⁴₂ ( 0.5 )² ( 0.5 )² ] [ c⁶₂  ( 1/3)²(2/3)⁴ ] [ c¹²₅ (1/6)⁵ (5/6)⁷  

= 0.375 × 0. 329 × 0.028

= 0.00345  

Learn more about binomial distribution

brainly.com/question/14565246

#SPJ4

Answer:

The total number of feet travelled by the motorcycle is 396 feet

Step-by-step explanation:

Using the constant speed relationship with the distance:

           v = s/t

From the above equation the distance travelled will be:

          s = v * t              (i)

We are given with the v, that is:

          v = 45 miles per hour

Converting in to feet per second.

          v = (45 * 5280)/3600 feet / s

          v = 66 feet per second

Now, put that v and t in equation (i)

          s = 66 * 6

          s = 396 feet

Answer:

B and D

Step-by-step explanation:

a is right because there are numbers that exist that are larger than five and smaller than 9

c is right because again, there are numbers that exist that are larger than -3 and smaller than 7.

b cannot be right because there are no numbers that can be larger than 9 that are also smaller than 5

d also cannot be right because there are no numbers that are less than -5 that are also more than -3.

Answer:

b and d

Step-by-step explanation:

those two can never be trusted

Answer:

(D) : Z+7

Step-by-step explanation:

−

1

+

8

}}

z−1+8

+

7

Answer:

Z-4/4+8

Z - 1 + 8

Z + (-1 + 8)

Z + 7

Answer:

9

Step-by-step explanation:

Let first find the width of the subintervals

\( \frac{4 - 0}{4} = 1\)

We are using MRAM, so we will be using the midpoint interval height as the height.

So for the first rectangle

The midpoint of interval [0,1] is 0.5

The midpoint of the second interval [1,2]=1.5

The midpoint of the third interval [2,3]=2.5

The midpoint of the fourth interval [3,4]= 3.5

So let's set up an equation

Using Riemann sums, we are adding up rectangle areas so we will use the midpoint height (since we are using MRAM) and delta x(which is 1)

\(r = f(0.5)(1) + f(1.5)(1) + f(2.5)(1) + f(3.5)(1)\)

We will then get an area of

\(9\)

That is the approximate area.

The real area is 9.333333, so this is close somewhat.

The answer is 9

533/100 then simplify

5 and 33/100

But that isn't an option and none of those options convert into 5.33, and I haven't been able to solve 3.75 repeating yet nor think it would convert into 5.33 anyhow. Please correct me if I'm solving this wrong.

Answer:

This trinomial has no GCF

Step-by-step explanation:

12x² +7x-10

There are not common factor of 12, 7, -10

The -10 has no x, so we can't factor the x either

So, this trinomial has no GCF