Can someone help me here please!thank you so much​ (with complete solution)​

Julius is correct that it will take less time for them to mow the lawn when working together.

Both Julius and Marcos have different predictions on how long it will take them to mow the lawn when working together. Marcos believes it will take them 5 hours, while Julius thinks it will take less time. Without any calculations, we can determine who is correct based on the concept of work rates.

When working alone, Julius takes 4 hours to mow the lawn. This means his work rate is 1 lawn per 4 hours. Similarly, Marcos takes 6 hours to mow the lawn alone, so his work rate is 1 lawn per 6 hours.

When working together, their work rates are combined. To find the total work rate, we add their individual work rates: 1/4 + 1/6 = 5/12.

This means that together, Julius and Marcos can mow 5/12 of the lawn in one hour. To mow the entire lawn, they need to complete 1 whole unit of work.

Since their combined work rate is 5/12, it will take them less than 5 hours to finish mowing the lawn. Therefore, Julius is correct in saying that it will take them less time than what Marcos predicted.

In conclusion, Julius is correct that it will take less time for them to mow the lawn when working together.

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Answer:

x=10

Step-by-step explanation:

work in the photo

Answer:

x=10

Step-by-step explanation:

Subtract 3 from both sides

2x=23-3

Simplify 23-3 to 20

2x=20

Divide both sides by 2  

x=  2 0/2

Simplify 20/2 to 10

x=10

​  

To set up the integral that represents the volume of the solid formed by revolving the shaded region R about an axis, we can use the method of cylindrical shells.

First, let's visualize the region R. It lies between the lines y = 0 and y = 3r, and the line r = 3. Since r = 3 is a vertical line, it represents a cylindrical boundary for the region.

Next, we need to determine the limits of integration for both the height and the radius of the cylindrical shells.

For the height, we can see that the region R extends from y = 0 to y = 3r. Since r = 3 is the upper boundary, the height of the shells will vary from 0 to 3(3) = 9.

For the radius, we need to find the distance from the y-axis to the line r = 3 at each y-value. We can do this by rearranging the equation r = 3 to solve for y: y = r/3. Thus, the radius at any y-value is given by r = y/3.

Now, we can set up the integral for the volume using the formula for the volume of a cylindrical shell:

V = ∫[a,b] 2πrh(y) dy,

where r is the radius and h(y) is the height of the cylindrical shell.

Plugging in the values we determined earlier, the integral becomes:

V = ∫[0,9] 2π(y/3)(9 - 0) dy

= 2π/3 ∫[0,9] y dy

Evaluating this integral gives us the volume of the solid formed by revolving the region R about the specified axis.

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Answer: $4.50

Step-by-step explanation:

6+6+3.5= 15.5 paid with a 20 so 4 dollars and 50 cents change

Answer:

Step-by-step explanation:

Since Aiden paid only the admission price not the skate rental price soo..

3.50 for himself and 6*2 =12 for his friends

3.50+12=15.50

20-15.50 = 4.50  in change  :)

Answer: (D= 87.5 kilometers per hour)

Step-by-step explanation: First, divide 200 by 2, which equals to 100. Next, divide 25 by 2, which is 12.5. Lastly, subtract 100 minus 12.5, which equals 87.5. You should end up with a result of (D= 87.5 kilometers per hour).

Answer:

551

Step-by-step explanation:

5% of 500 25

5 of 525 26.25

525+26.25

551.25

Sine interest formula: total = start amount x 1 + interest rate x time)

Total = 500 x (1+ 0.05 x 2)

Total = $550

Interest = 550 - 500 = $50

∠1 + ∠2 = 180

Substituting the given expressions for ∠1 and ∠2:

8x + (2x - 3) = 180

Simplifying and solving for x:

10x - 3 = 180

10x = 183

x = 18.3

Now we can substitute x back into the expression for ∠1 to find its measure:

∠1 = 8x = 8(18.3) = 146.4 degrees.

Therefore, if ∠1 and ∠2 add up to 180 degrees and ∠1 is given as 8x° and ∠2 is given as (2x - 3)°, then ∠1 measures 146.4 degrees

Answer:

<1=146.4

<2=34.6

Step-by-step explanation:

<1+<2=180 degrees

So,

8x+(2x-3)=180

10x-3=180

10x=183

X=18.3

subsitute:

<1=8x

<1=8(18.3)

<1=146.4

<2=2x-3

<2=2(18.3)-3

<2=34.6

Watkins family should install a chlorine pool because it is more cost effective because the y-value at 10 years is less on graph B than it is on graph A.

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

If the family plans to move to their retirement home in 10 years, We need to find which pool would be more cost effective to install.

As in the given graph, the x-axis denotes the year while the y-axis denotes the cost of maintaining the pool in that year.

When we compare the two of the given graph we will find the cost of maintaining a chlorine pool is less as compared to a salt water pool at x=10, therefore, after 10 years.

Hence, the Watkins family should install a chlorine pool because it is more cost effective because the y-value at 10 years is less on graph B than it is on graph A.

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Answer:

a

Step-by-step explanation:edge

Answer:

25 hits

Step-by-step explanation:

you would divide 1000 by 40 and get 25

1) 2 3÷4 = 11÷4

hence, 11÷8 = 1.37 .

2)  4 2÷9 =38÷9 .

hence, 38÷18 = 2.11 .

simplify  2 3÷4  = 11÷4

and

4 2÷9 = 38÷9.

now 1/2 of 11/4 = 11/8 = 1.37.

1/2 of 38/9 = 38/18 = 2.11 .

Answer:

KJ = 128°

Step-by-step explanation:

JL = 2×26 = 52°

KL= KJ + JL

KJ = KL-JL

KJ = 180° - 52°

KJ = 128°

In the theater, that have 1,464 seats.

1426 seats are in "regular" sections

38 seats are  "premium" front-row section

The seat arrangement is solved by division. In this case the 62 equal spaced is the divisor while the number of seats is the in each row is the quotient

The division is as follows

1464 / 62

= 23 19/31

The number of seats in the regular section is 23 * 62 = 1426

The remainder will be arranged in premium front row

using equivalent fractions

19 / 31 = 38 / 62

the remainder is 38 and this is the seat for the premium front row section

OR 1464 - 1426 = 38 seats

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To predict the cost of driving 1800 miles per month, substitute 1800 in the given function C(d) = 0.2d + 280C(1800) = 0.2 (1800) + 280= $640 per month. Therefore, the cost of driving 1800 miles per month is $640.

(b) Graph is shown below:(c)The slope of the graph represents the rate of change of the cost of driving a car per mile. The slope is given by 0.2, which means that for every mile Lynn drives, the cost increases by $0.2.The y-intercept of the graph represents the fixed cost (amount she pays even if she does not drive).

The y-intercept is given by 280, which means that even if Lynn does not drive the car, she has to pay $280 per month.The linear function gives a suitable model in this situation because the monthly cost increases as the number of miles driven increases.

This is shown by the positive slope of the graph. The fixed cost is also included in the function, which is represented by the y-intercept. Therefore, a linear function is a suitable model in this situation.

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∠A = ∠C for every isosceles triangle and not only for this specific isosceles triangle.

We are given that:

AB = BC

Now, draw a angle bisector from point B to the line AC in a way that it intersects AC at D.

Now, we get that:

∠ABD = ∠CBD ( BD is the angle bisector)

BD = BD ( common line)

So, ΔABD ≅ Δ CBD ( SAS property)

So,

∠A = ∠ C ( CPCT rule)

Also, it will be true for every isosceles triangle.

Therefore, we get that, ∠A = ∠C for every isosceles triangle and not only for this specific isosceles triangle.

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Your question was incomplete. Please refer the content below:

There is an isosceles triangle with AB = BC. Prove that ∠A = ∠C.

Did we prove the conclusion true for every isosceles triangle or only for this specific isosceles triangle.

Given: The Table of Values

To Find: The least-squares regression line for the data set in the table by using the desmos graphing calculator.

SolutionThe general form of least-squares regression line is: y = mx + b Where, m is the slope and b is the y-intercept.

Where, m is the slope and b is the y-intercept.By using the desmos graphing calculator, we get

m 2.55 b -6.435 Substitute these Values

y = (2.55)x + (-6.435)

y = 2.55x - 6.435

Answer: A

The expression to generate the parameters and statistics is y tilde m x plus b, the correct option is C.

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

We are given that;

x subscript 2 baseline y subscript 2 baseline;

1 2

2 9

3 7

4 12

Now,

To find the least-squares regression line for a data set using Desmos, you need to follow these steps:

Enter the data as a table in Desmos. For example, type {1, 2, 3, 4} in the x column and {2, 9, 7, 12} in the y column.

Type y tilde m x plus b in the expression box. This tells Desmos to find the values of m and b that minimize the sum of squared errors between y and y tilde (the predicted values).

Click on the wrench icon next to the expression to see the parameters and statistics. You should see something like this:

m = 2.8 b = -1.6 r² = 0.84

This means that the equation of the least-squares regression line is:

y tilde = 2.8 x - 1.6

And that the coefficient of determination (r²) is 0.84.

Therefore, by expression the answer will be y tilde m x plus b.

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Number of fishes in the tank are 9.

Given

Density (d)= 0.3 fish/ft³

Volume of a fish tank (V) = 30 ft³

number of units(n)= ?

Density, mass of a unit volume of a material substance. The formula for density is d = n/V, where d is density, n is quantity(number of units), and V is volume. Density is commonly expressed in units of grams per cubic centimetre.

d = n/V

d = n/V

n = d * V

n = 0.3 fish/ft³ * 30 ft³

number of units(n) = 9

Hence,

Number of fishes in the tank are 9.

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Answer: The correct answer is (c) 9.

Step-by-step explanation:

0.3 x 30 = 9

Answer:

38

Step-by-step explanation:

mhmm

Answer: consecutive interior angles

Step-by-step explanation:

Answer: Since the square root of a negative number is not a real number, there are no real solutions to this equation, and therefore no values of x for which f(x) = g(x).

Step-by-step explanation:

To find all values of x for which f(x) = g(x), we can set the two functions equal to each other and solve for x:

-x² + 5 = -2x + 2

Expanding the right-hand side:

-x² + 5 = -2x + 2

-x² + 2x + 3 = 0

Solving for x using the quadratic formula:

x = (-b ± √(b² - 4ac)) / 2a

where a = 1, b = 2, and c = 3

x = (-2 ± √(2² - 4(1)(3))) / 2(1)

x = (-2 ± √(4 - 12)) / 2

x = (-2 ± √(-8)) / 2

Since the square root of a negative number is not a real number, there are no real solutions to this equation, and therefore no values of x for which f(x) = g(x).

ANSWER

EXPLANATION

We have to find the equation of the line perpendicular to the given line:

and passes through the point (-8, 6)

A line perpendicular to another line has a slope that is the negative inverse of the line.

The slope of the given line is 3/4, so the slope of the line we are looking for is -4/3

Now, we use the point slope method to find the equation:

y - y1 = m(x - x1)

where m = slope

(x1, y1) = point the line passes through

So, we have:

That is the equation of the line.

Answer:

3x - 4 = 14

+4. +4

3x = 18

÷3. ÷3

x = 6

Answer:  Radeon R9 390 graphics card with a Core i5-2300 2.8GHz or FX-6350 processor

Step-by-step explanation:

Answer:

Equiangular and Equilateral

Step-by-step explanation:

I tried

Based on the information provided, the only possible number that satisfies all the conditions is 20.

What is GCF?

GCF stands for "Greatest Common Factor". It is also sometimes referred to as the "Greatest Common Divisor" (GCD). The GCF of two or more numbers is the largest positive integer that divides evenly into each of the numbers. In other words, it is the largest factor that the numbers have in common.

The GCF (Greatest Common Factor) of 18, 36, and a number N is 2. Since 18 and 36 are both even numbers with a common factor of 2, any number that satisfies this condition must also be even and have a factor of 2.

The number N is a multiple of 5. Since the number is even and has a factor of 2, the only even multiple of 5 between 18 and 30 is 20.

Finally, we are given that N is greater than 18 and less than 30. The only number that satisfies all the given conditions is therefore 20.

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Answer: use a cucumber

Step-by-step explanation:

Answer:

Male elk:

7/30

Female elk:

4/15

Adult elk:

173/450

Baby elk:

26/225

The relative frequency of male elk is 7/30, female elk is  4/15, adult elk is 173/450, and baby elk is 26/225.

Relative frequency can be defined as the number of times an event occurs divided by the total number of events occurring in a given scenario.

Dr. Tyler’s team is in charge of marking the hooved animals.

The table shows the data collected on all the marked hooved animals.

Male 105 71 42 52

Female 120 93 63 34

Adult 173 103 72 58

Baby 52 61 33 28

The relative frequency of male elk, female elk, adult elk, and baby elk is given by;

\(\rm Male \ Elk =\dfrac{105}{105+120+173+52} =\dfrac{105}{450}=\dfrac{7}{30}\\\\Female \ Elk =\dfrac{120}{105+120+173+52} =\dfrac{120}{450}=\dfrac{4}{15}\\\\Adult\ Elk =\dfrac{173}{105+120+173+52} =\dfrac{173}{450}\\\\Baby \ Elk=\dfrac{52}{450}=\dfrac{26}{225}\)

Hence, the relative frequency of male elk is 7/30, female elk is  4/15, adult elk is 173/450, and baby elk is 26/225.

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(x, y) → (x+2, y+3) means a translation 2 units to the right and 3 units up.

Transformations are changes done in the shapes on a coordinate plane by rotation, reflection or translation.

here, we have,

Given the rule of transformation:

(x, y) → (x+2, y+3)

If we move horizontally 2 units to the right, 2 is added to the x-coordinate of any given point, and then 3 units up.

In other words,

(x, y) → (x+2, y+3) means Translation 2 units right and 3 units up.

For example,

Let say if we have the point A(4, 5)

Using the translation rule:

(x, y) → (x+2, y+3)

A(4, 5) → A'(4 + 2, 5 + 3) → A'(6, 8)

Therefore, the new position of A(4, 5) after translating 3 units right and 2 units up would be: A'(6,8).

Hence, (x, y) → (x+2, y+3) means a translation 2 units to the right and 3 units up.

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The 4x4 checkerboard matrix is constructed with alternating 1s and 0s based on the position of the elements. The basis for the nullspace of the checkerboard matrix is found, and its nullity and rank are determined. Additionally, the rank and nullity of a 17x17 checkerboard matrix are determined.

8.1 To construct the 4x4 checkerboard matrix, we assign values based on the parity of the row and column indices. If the sum of the row index (i) and column index (j) is even, the element (aij) is 1. Otherwise, if the sum is odd, the element is 0. The resulting 4x4 checkerboard matrix is:
A = |1 0 1 0|
|0 1 0 1|
|1 0 1 0|
|0 1 0 1|
8.2 to find the basis for the nullspace of A, we need to solve the equation Ax = 0, where x is a vector. By performing row operations on the matrix, we can bring it into row-echelon form:
|1 0 1 0|
|0 1 0 1|
|1 0 1 0|
|0 1 0 1|
Row 3 - Row 1:
|1 0 1 0|
|0 1 0 1|
|0 0 0 0|
|0 1 0 1|
Row 4 - Row 2:
|1 0 1 0|
|0 1 0 1|
|0 0 0 0|
|0 0 0 0|
The reduced row-echelon form shows that the last two rows are dependent on the first two rows. Therefore, the basis for the nullspace is the vector {(-1, 1, -1, 1)}. The nullity of A, which is the dimension of the nullspace, is 1.
The rank of A is the number of linearly independent rows, which in this case is 2.
8.3 The rank and nullity of the 17x17 checkerboard matrix can be determined using the same approach. Since the matrix is larger, it is not feasible to write it out here. However, we can observe a pattern based on the size of the matrix. For an n x n checkerboard matrix, if n is even, the rank will be n/2 and the nullity will also be n/2. If n is odd, the rank will be (n + 1)/2 and the nullity will be (n - 1)/2.
Therefore, for the 17x17 checkerboard matrix, the rank will be (17 + 1)/2 = 9, and the nullity will be (17 - 1)/2 = 8.
In summary, the basis for the nullspace of the 4x4 checkerboard matrix is {-1, 1, -1, 1}, resulting in a nullity of 1 and a rank of 2. For the 17x17 checkerboard matrix, the rank is 9, and the nullity is 8.

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