Solve. Show all your work!The digits of a positive two-digit integer N are interchanged to form an integer K. Find allpossibilities for N if N is even and exceeds K by more than 50.

Answers

Answer 1

Let the units place digit be U and the tens place digit be T.

The number N is given by:

[tex]N=10T+U\ldots(i)[/tex]

The number K is given by:

[tex]K=10U+T\ldots(2)[/tex]

It is given that N is even that means U can be only from 0,2,4,6,8.

It is also given that N exceeds K by more than 50 so it follows:

[tex]\begin{gathered} N-K\ge50 \\ 10T+U-(10U+T)\ge50 \\ 9T-9U\ge50 \end{gathered}[/tex]

So it can be said that:

[tex]T-U\ge\frac{50}{9}\approx5.5556\approx6[/tex]

Since the value of T-U will always be an integer and it should be greater than or equal to 6.

The number T can be 1 to 9 and U can be only 0,2,4,6,8 so it follows:

[tex]\begin{gathered} T=9,U=0\Rightarrow T-U=9 \\ T=9,U=2\Rightarrow T-U=7 \\ T=8,U=0\Rightarrow T-U=8 \\ T=7,U=0\Rightarrow T-U=7 \\ T=6,U=0\Rightarrow T-U=6 \\ T=8,U=2\Rightarrow T-U=6 \end{gathered}[/tex]

Hence the possible values for integer N are 90,92,80,70,60,82 and the respective integer K will be 09,29,08,07,06,28.

In all cases the difference is more than 50 as you can check.


Related Questions

x/6 -7 = -4 what value of x makes this equation true

Answers

Answer:

x=18

Explanation:

Given the equation:

[tex]\frac{x}{6}-7=-4[/tex]

To solve for x, follow the steps below.

Step 1: Add 7 to both sides of the equation.

[tex]\begin{gathered} \frac{x}{6}-7+7=-4+7 \\ \implies\frac{x}{6}=3 \end{gathered}[/tex]

Step 2: Multiply both sides of the equation by 6.

[tex]\begin{gathered} \frac{x}{6}\times6=3\times6 \\ x=18 \end{gathered}[/tex]

The value of x that makes the equation true is 18.

I would like someone to help me so I can understand what to do. Pls anyone

Answers

we have that

2 cups in a pint

2 pints in a quart

4 quarts in a gallon

so

4 cups in 2 pints

4 cups in a quart

16 cups in 4 quarts

16 cups in a gallon

and

we have

3 parts red and 5 parts yellow

3 parts +5 parts=8 parts

8 parts=1 gallon

red paint fraction is 3/8 gallon

yellow paint fraction is 5/8 gallon

Remember that

I need 16 cups for a gallon

Apply proportion

16/1=x/(3/8)

x=(3/8)16

x=6 cups

In the figure, LMN is congruent to QRS.What is the value of x and y?

Answers

If they are congruent, then;

3x + 5 = 2x + 10

collect like term

3x - 2x = 10 - 5

x = 5

Similarly,

y + 6 = 2y - 12

collect like term

2y - y = 6 + 12

y = 18

I A bar of gold is 10 cm long,5 cm wide, and 7 cm high. What is it's volume?

Answers

Assuming the bar of gold has a rectangular form, its volume would be the product between all three dimensions.

[tex]A=10\operatorname{cm}\cdot5\operatorname{cm}\cdot7\operatorname{cm}=350\operatorname{cm}^3[/tex]

Therefore, the volume is 350 cubic centimeters.

19.3 g/cm³
Explained- Density of a substance refers to the mass of the substance per unit volume.

Consider the following graph. Explain why it is possible to find an Euler circuit for this graph. Then, using Fleury's algorithm, identify and draw an Euler circuit starting with point A and choosing the first edge as A to F. Show all work using the required method. Draw the graph properly. (If you choose not to draw on my graph, then draw a LARGE graph on your paper.)

Answers

The Euler circuit for the graph using Fleury's algorithm is attached below.

The following steps are to be used to form the circuit.

Of the three edges coming from vertex "2" should I choose? We avoid choosing the edge "2-3" because it is a bridge and we cannot return to "3".

Any of the two remaining edges is ours to choose. Let's say we choose "2-0." By eliminating this edge, we can travel to vertex "0."

We pick the one edge from vertex "0" that is present, remove it, and then move to vertex "1." The Euler tour changes to "2-0 0-1."

We take the lone edge from vertex "1," delete it, and then move to vertex "2." The Euler tour is now "2-0 0-1 1-2."

Once more, vertex 2 has just one edge, so we pick it, remove it, and continue on to vertex 3.

Hence we get the required circuit.

The term "Eulerian graph" has two different meanings in graph theory. One interpretation applies to a graph with an Eulerian circuit, whereas the other applies to a graph where each vertex has an even degree. These definitions apply to linked graphs.

To learn more about Euler circuit visit:

https://brainly.com/question/22089241

#SPJ9

Section 1- Question 10Use the quadratic formula to solve the following equation:4m2-7m +2=57+√97A87+√17B87 + √1C87+√-63D8

Answers

The Solution:

Given:

[tex]4m^2-7m+2=5[/tex]

We are required to use the Quadratic Formula to solve the equation above.

[tex]\begin{gathered} 4m^2-7m+2-5=0 \\ 4m^2-7m-3=0 \end{gathered}[/tex]

The Quadratic Formula is:

[tex]m=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

In this case:

[tex]\begin{gathered} a=4 \\ b=-7 \\ c=-3 \end{gathered}[/tex]

Substitute:

[tex]m=\frac{-(-7)\pm\sqrt{(-7)^2-4(4)(-3)}}{2(4)}[/tex][tex]m=\frac{7\pm\sqrt{49+48}}{8}=\frac{7\pm\sqrt{97}}{8}[/tex]

Therefore, the correct answer is [option A]

Convert 59°F to degrees Celsius.If necessary, round your answer to the nearest tenth of a degree.Here are the formulas.C= (5/9) (F -32).

Answers

15 ° C

Explanation

to convert form Farenheit to Celcius degree we need to use the formula

[tex]C=\frac{5}{9}(F-32)[/tex]

then

Let

F=59

now, replace and evaluate

[tex]\begin{gathered} C=\frac{5}{9}(F-32) \\ C=\frac{5}{9}(59-32) \\ C=\frac{5}{9}(27) \\ C=15 \end{gathered}[/tex]

therefore, the answer is

15 ° C

I hope this helps you

In triangle EFG, m∠E = 91.6° and m∠F = 30.7°. Determine the measure of the exterior angle to ∠G.

57.7°
60.9°
119.1°
122.3°

Answers

Answer:

122.3

Step-by-step explanation:

91.6 + 30.7 = 122.3

180 - 122.3 = 57.7 (angles in a triangle = 180)

180 - 57.7 = 122.3 (angles on a straight line = 180)

Answer: 122.3

Step-by-step explanation: did the practice test

a. Make a scatter plot of the data in the table below.b. Does it appear that a linear model or an exponential model is the better fit for the data?

Answers

a) Option C

b) A linear model

Explanation:

To determine the correct plot from the options, we trace the x and y values given

Option A:

When x = 5, y = 1

when x = 6.6, y = 2

We see this is exact opposite of the values in the given table

Option B:

when x = 5, y = 5

when x = 6.6, y = 6.6

This is also different from the given values in the table

Option C:

when x = 1, y = 5

when x = 2, y = 6.6

when x = 3, y = 8.4

This is the same as the given values in the table.

Hence, the correct scatter plot is option C

We need to check if the points are linear:

[tex]\begin{gathered} u\sin g\text{ any two points on the table,} \\ \text{rate = }\frac{6.6\text{ - 5}}{2-1}\text{ = 1.6/1 = 1.6} \\ \text{rate = }\frac{8.4\text{ - 6.6}}{3-2}\text{ = 1.8/1 = 1.8} \\ \text{rate = }\frac{10.2\text{ - 8.4}}{3\text{ - 2}}\text{ = 1.8/1 = 1.8} \\ \text{rate = }\frac{12-10.2}{4-3}\text{ = 1.2/1 = 1.2} \end{gathered}[/tex]

A linear model fit the data

whats the constant proportionality of the table. x 30 24 9 y 10 8 3

Answers

Let:

y = kx

Where:

k = constant proportionality of the table

If x = 30, y = 10:

10 = k30

Solving for k:

k = 10/30 = 1/3

Verify the answer:

If x = 24, y = 8:

y = kx = 1/3*24 =24/3 = 8

Therefore, the constant proportionality of the table is 1/3

Use the graph to respond to the questions. 6a. What is the height of the ball before its thrown? b. Approximately how high in the air did the ball go? C. NWAOOOOO INW Approximately long did it take the ball to reach the max height? d. How long was the ball in the air? 34(0.3) 2 e. (-0.2.0) -2 -1 (3.0) t 3 4 What does the point (3, 0) tell us about this situation? 1 INV

Answers

Given data:

The given graph is shown.

a)

The initial height of the ball is 3 units.

b)

The maximum height of the ball is approx 12.5 units.

c)

The time taken by the ball to reach maximum height is 1.5 units.

d)

The time ball was in air is 3 units.

e)

The point (3,0) denoted the coordinate of time is 3 when height is zero.

The system of equations y= -x - 1 is graphed. what is the solution to the system of equations ?

Answers

We solve as follows:

*First: Given one function, we corroborate and find the second one.

*We have that the first function passes by the points (0, -1) & (1, 0); we find its function:

[tex]m=[/tex]

Last week you worked 28 hours, and earned $266. What is your hourly pay rate? $ per hour Give your answer in dollars and cents (like 5.50)

Answers

1) Gathering the data

Last week

28 worked hours = $266

What is your hourly pay rate?

2) To find out that, let's set a proportion

Worked hours $

28------------------------ 266

1--------------------------- x

Let's use the fundamental property of a proportion that allows us to cross multiply the ratios of that proportion

So the hourly pay rate is approximately $11.08 per hour.

Can you please help me with this question D and E

Answers

Solution

Part d

T= -2ºC, V=15 km/hr

We can convert to F and mi/h like this:

T= 1.8*(-2)+ 32= 28.4ºF

Ms= As/0.62= 15 km/hr /0.62= 24.19 mi/hr

Replacing we have:

[tex]WC=35.74+0.6215\cdot(28.4)-35.75(24.19^{0.16})+0.4275(28.4)(24.19^{0.16})[/tex]

Solving we got:

[tex]WC=35.74+17.651-59.519+20.213=14.08[/tex]

Rounded to one decimal we got:

14.1

Part e

T= 10ºC = 1.8(10)+ 32=50ºF

Ms = 34 km/hr

Ms= As/0.62= 34 km/hr/ 0.62= 54.84 mi/hr

Replacing we got:

[tex]WC=35.74+0.6215\cdot(50)-35.75\cdot(54.84^{0.16})+0.4275(50)(54.84^{0.16})[/tex][tex]WC=35.74+31.075-67.847+40.566=39.53[/tex]

Rounded to the nearest tenth we got:

39,5

Althought the reported temperature is 50 ºFahrenheit, because of wind it feels like 39.5 Fahrenheit

When simplified, |9+ (4-3) – 17| has a value of ______.

Answers

We have the following expression:

[tex]|9+(4-3)-17|[/tex]

First, let's solve the operation inside the parenthesis.

[tex]|9+1-17|[/tex]

Second, we add and subtract accordingly.

[tex]\lvert-7\rvert[/tex]

Third, we apply the absolute value property.

[tex]\lvert-7\rvert=7[/tex]

In conclusion, the values is 7

Which function is nonlinear?Which equation represents a nonlinear function? (Let me know if you can’t read the possible answers for the equation and I will send them)

Answers

Given:

There are 4 equation representations are given.

To find:

The nonlinear equation.

Explanation:

A)

[tex]\begin{gathered} 3x-2y=7 \\ i.e)3x-2y-7=0 \end{gathered}[/tex]

Which is of the linear form,

[tex]ax+by+c=0[/tex]

B)

[tex]y=\frac{2}{3}x+8[/tex]

Which is of the linear form,

[tex]y=mx+c[/tex]

C)

Let us consider the two points.

[tex](5,0),(6,2)[/tex]

Using the two-point formula,

[tex]\begin{gathered} \frac{y-y_1}{y_2-y_1}=\frac{x-x_1}{x_2-x_1} \\ \frac{y-0}{2-0}=\frac{x-5}{6-5} \\ \frac{y}{2}=\frac{x-5}{1} \\ y=2x-10 \end{gathered}[/tex]

Substituting the first point to verify the linear equation,

[tex]\begin{gathered} -4=2(3)-10 \\ -4=-4 \end{gathered}[/tex]

Therefore, the linear equation is satisfied for all 4 points.

Thus, options A, B, and C are linear equation.

So, the nonlinear equation must be given options D.

Final answer:

The correct option is D.

How would you solve this question or similar questions? It is solving for x.

Answers

Given the initial expression

[tex]\sqrt[]{2x+3}=\sqrt[]{2x}+3[/tex]

Then,

[tex]\begin{gathered} \sqrt[]{2x+3}=\sqrt[]{2x}+3 \\ \Rightarrow(\sqrt[]{2x+3})^2=(\sqrt[]{2x}+3)^2 \\ \Rightarrow2x+3=2x+6\sqrt[]{2x}+9 \end{gathered}[/tex]

Therefore,

[tex]\begin{gathered} \Rightarrow3=6\sqrt[]{2x}+9 \\ \Rightarrow-6=6\sqrt[]{2x} \\ \Rightarrow\sqrt[]{2x}=-\frac{6}{6}=-1 \\ \Rightarrow\sqrt[]{2x}=-1 \\ \Rightarrow\sqrt[]{2}\sqrt[]{x}=-1 \\ \Rightarrow\sqrt[]{x}=-\frac{1}{\sqrt[]{2}} \end{gathered}[/tex]

And sqrt(x)>=0 for any real number.

Therefore, there is no real solution to the equation.

Find the midpoint and distance on points (5,5) and (-1,3)

Answers

Given:

Two points (5, 5) and (-1, 3).

To find the midpoint and distance:

Using the midpoint formula,

[tex]\begin{gathered} m=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}) \\ =(\frac{5-1}{2},\frac{5+3}{2}) \\ =(\frac{4}{2},\frac{8}{2}) \\ =(2,4) \end{gathered}[/tex]

Thus, the mid-point formula is (2, 4).

Using the distance formula,

[tex]\begin{gathered} d=\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2_{}} \\ =\sqrt[]{(-1-5)^2+(3-5)^2} \\ =\sqrt[]{(-6)^2+(-2)^2} \\ =\sqrt[]{36+4} \\ =\sqrt[]{40} \\ =2\sqrt[]{10}\text{ units} \end{gathered}[/tex]

Thus, the distance between the two points is,

[tex]2\sqrt[]{10}units[/tex]

The circumference of the hub cap of a tire is 79.63 centimeters. Find the area of this hub cap. Us3.14 for a. Use pencil and paper. If the circumference of the hub cap were smaller, explain how twould change the area of the hub cap.The area of this hub cap is about square centimeters.(Round the final answer to the nearest whole number as needed. Round all intermediate values to the nearestthousandth as needed.)

Answers

Recall that the circumference of a circle is given by the following formula:

[tex]C=2\pi r,[/tex]

where r is the radius of the circle.

We are given that:

[tex]79.63cm=2\pi r,[/tex]

therefore:

[tex]r=\frac{79.63}{2*\pi}cm.[/tex]

Now, the area of a circle is given by the following formula:

[tex]A=\pi r^2,[/tex]

Therefore, the area of the hub cap is:

[tex]A=\pi *(\frac{79.63cm}{2})^2*\frac{1}{\pi^2}\approx505cm^2.[/tex]

Answer:

[tex]\begin{equation*} 505cm^2. \end{equation*}[/tex]

Given that the radius of the circle and the circumference are proportionally related, if the circumference is smaller then the radius is smaller. The area is proportionally related to the radius squared, therefore, a smaller circumference implies a smaller radius which implies a smaller area.

Which of the following is not a step in solving the equation 3/x = 8/7 (1) Divide both sides of the equation by 8(2) Use cross products to write the equation 3.7 =8x(3) Divide both sides of the equation by 3(4) Rewrite 3.7 as 21

Answers

Let's solve the equation:

3/x = 8/7

8x = 3 * 7 Cross product

8x = 21 Rewrite 3 * 7 as 21

Dividing both sides by 8:

8x/8 = 21/8

x = 2.625

As you can see, we do not follow step 3. Divide both sides of the equation by 3.

ans (alpha particles) at Figure 127 Exercises 12.6. complete the following: Find the intercepts and domain and perform the symmetry test (a) 9x^2 - 16y^2 = 144

Answers

We have that the general equation of the hyperbola is the following:

[tex]\frac{x^2}{a^2}-\frac{y^2}{b^2}=1[/tex]

where 'a' and '-a' are the x-intercepts.

In this case, we have the following equation:

[tex]9x^2-16y^2=144[/tex]

then, we have to divide both sides by 144 to get on the right side 1, thus, we have the following:

[tex]\begin{gathered} (9x^2-16y^2=144)(\frac{1}{144}) \\ \Rightarrow\frac{9}{144}x^2-\frac{16}{144}y^2=1 \\ \Rightarrow\frac{x^2}{16}-\frac{y^2}{9}=1 \end{gathered}[/tex]

now, notice that we have that:

[tex]a^2=16[/tex]

then, the x-intercepts are:

[tex]\begin{gathered} a^2=16 \\ \Rightarrow a=\pm\sqrt[]{16}=\pm4 \\ a_1=4 \\ \text{and} \\ a_2=-4 \end{gathered}[/tex]

therefore, the x-intercepts are 4 and -4.

Now that we know that the intercepts are on those points, we can see that the hyperbola has the following graph:

we can see that the hyperbola is not defined between -4 and 4, therefore, the domain of the hyperbola is:

[tex](-\infty,-4\rbrack\cup\lbrack4,\infty)[/tex]

finally, to perform the symmetry test, we have to check first both axis simmetries by changing x to -x and y to -y:

[tex]\begin{gathered} \frac{x^2}{16}-\frac{(-y)^2}{9}=1 \\ \Rightarrow\frac{x^2}{16}-\frac{y^2}{9}=1 \\ then \\ \frac{(-x)^2}{16}-\frac{y^2}{9}=1 \\ \Rightarrow\frac{x^2}{16}-\frac{y^2}{9}=1 \end{gathered}[/tex]

since the hyperbola got symmetry about the x-axis and the y-axis, we have that the hyperbola got symmetry about the origin

18. Light Bulbs: The mean lifespan of a standard 60 watt incandescent light bulb is 875 hours with a standard deviation of 80 hours. The mean lifespan of a standard 14 watt compact fluorescent light bulb (CFL) is 10,000 hours with a standard deviation of 1,500 hours. These two bulbs put out about the same amount of light. Assume the lifespan’s of both types of bulbs are normally distributed to answer the following questions. (a) I select one incandescent light bulb and put it in my barn. It seems to last forever and I estimate that it has lasted more than 2000 hours. What is the probability of selecting a random incandescent light bulb and having it last 2000 hours or more. Did something unusual happen here? (b) I select one CFL bulb and put it in the bathroom. It doesn’t seem to last very long and I estimate that it has lasted less than 5,000 hours. What is the probability of selecting a random CFL and having it last less than 5,000 hours. Did something unusual happen here? (c) Compare the the lifespan of the middle 99% of all incandescent and CFL light bulbs. (d) Is there much of a chance that I happen to buy an incandescent light bulb that lasts longer than a randomly selected CFL?

Answers

Set

[tex]\begin{gathered} \mu_1=875,\sigma_1=80 \\ \text{and} \\ \mu_2=10000,\sigma=1500 \end{gathered}[/tex]

a) The Z-score formula is

[tex]Z=\frac{x-\mu}{\sigma}[/tex]

Therefore, in our case, if x=2000

[tex]\Rightarrow Z=\frac{2000-875}{80}=\frac{1125}{80}=14.0625[/tex]

Using a Z-score table,

[tex]\begin{gathered} P(z\ge2000)=1-P(z<2000)\approx1-1=0 \\ \Rightarrow P(z\ge2000)=0 \end{gathered}[/tex]

A value of 2000 hrs is 14 standard deviations away from the mean. The probability is practically zero.

b) Similarly, set x=5000; then,

[tex]Z=\frac{5000-10000}{1500}=-\frac{5000}{1500}=-3.333\ldots[/tex]

Thus, using a z-score table

[tex]P(z\le5000)=0.0004[/tex]

The probability is 0.0004=0.04%. It is quite improbable but not an impossible event.

c) According to the empirical rule 99.8% of the data lies within 3 standard deviations; thus,

[tex]\begin{gathered} Incandescent \\ \mu_1\pm3\sigma_1=\lbrack875-240,875+240\rbrack=\lbrack635,1115\rbrack \\ \text{CFL} \\ \mu_2\pm3\sigma_2=\lbrack10000-4500,10000+4500\rbrack=\lbrack5500,14500\rbrack \end{gathered}[/tex]

The lifespan of 99% of all incandescent bulbs is between 635 and 1115 hrs, whereas that of all CFL bulbs is between 5500 and 14500 hrs.

d) If we randomly select a CFL, the most probably lifespan is the mean of the distribution, in other words, 10000 hrs.

The probability of an incandescent bulb lasting 10000 hrs is

[tex]\begin{gathered} Z=\frac{10000-875}{80}=114.0625 \\ \Rightarrow P(z\ge10000)=1-P(z<10000)=0 \end{gathered}[/tex]

The event is practically impossible.

What is the equation of the line shiwn graphed below

Answers

we are given the horizontal line. To determine the equation of this line let's remember that the equation of any horizontal line is of the form:

[tex]y=k[/tex]

Where "k" is the point where the line touches the y-axis, in this case, the equation of the line is:

[tex]y=4[/tex]

I need help answering this question and the solution set

Answers

Let's first try to rewrite the expression to see if we can write it in a fomr more familiar:

[tex]\begin{gathered} x-\sqrt{10-3x}=0, \\ x=\sqrt{10-3x}, \\ x^2=10-3x, \\ x^2+3x-10=0. \end{gathered}[/tex]

This is the same equation, but now we recognize a quadratic expression equal to 0. We can use the quadratic formula to find the solutions of this equation:

[tex]x_{1,2}=\frac{-3\pm\sqrt{3^2-4\cdot1\cdot(-10)}}{2\cdot1}[/tex]

And solve:

[tex]\begin{gathered} x_{1,2}=\frac{-3\pm\sqrt{9+40}}{2}=\frac{-3\pm7}{2} \\ x_1=\frac{-3+7}{2}=\frac{4}{2}=2 \\ x_2=\frac{-3-7}{2}=\frac{-10}{2}=-5 \end{gathered}[/tex]

Thus, the solution set of the equation is x = -5, x = 2

If h(x)=-3x and g(x)=2x-1 what input value would make h(x)=12?

Answers

The question gives the function h(x) as

[tex]h(x)=-3x[/tex]

To find the value that will make the function 12, we equate the function to 12, such that

[tex]-3x=12[/tex]

Solving to get x, we have

[tex]\begin{gathered} x=\frac{12}{-3} \\ x=4 \end{gathered}[/tex]

Therefore, h(x) = 12 when x = 4.

A building has two sizes of apartments, small and regular. The ratio of small apartments to regular apartments is 6 to 18. What percent of apartments in the building are small?

Answers

25 percent. You have 24 total apartments so 6/24 is .25, or 25 percent.

Elisa's school is selling tickets to a choral performance. On the first day of ticket sales the school sold 8 senior citizen tickets and 5 child tickets for a total of $94. The school took in $152 on the second day by selling 4 senior citizen tickets and 10 child tickets. What is the price each of one senior citizen ticket and one child ticket?

Answers

Let's define the next variables:

x: price of one senior ticket

y: the price of one child ticket

On the first day of ticket sales, the school sold 8 senior citizen tickets and 5 child tickets for a total of $94. That is:

8x + 5y = 94 (eq. 1)

The school took in $152 on the second day by selling 4 senior citizen tickets and 10 child tickets. That is:

4x + 10y = 152 (eq. 2)

Multiplying equation 2 by 2, we get:

2(4x + 10y) = 2*152

8x + 20y = 304 (eq. 3)

Subtracting equation 1 to equation 3, we get:

8x + 20y = 304

-

8x + 5y = 94

------------------------

15y = 210

y = 210/15

y = 14

Substituting this result into equation 1:

8x + 5(14) = 94

8x + 70 = 94

8x = 94 - 70

8x = 24

x = 24/8

x = 3

Each senior citizen ticket cost $3 and each child ticket cost $14

solve the given system of equations2y=x+93x-6y=-15

Answers

Answer:

No solutions

Explanation:

The given system of equations is

2y = x + 9

3x - 6y = -15

To solve the system, we first need to solve the first equation for x, so

2y = x + 9

2y - 9 = x + 9 - 9

2y - 9 = x

Then, replace x = 2y - 9 on the second equation

3x - 6y = -15

3(2y - 9) - 6y = -15

3(2y) + 3(-9) - 6y = -15

6y - 27 - 6y = -15

-27 = -15

Since -27 is not equal to -15, we get that this system of equation doesn't have solutions.

In right triangle XYZ, the hypotenuse measures 14 inches and one leg measures 10 inches. Find the length of the other leg. Show your work and write your answer in simplest radical form.

Answers

As per given by the question,

There are given that a triangle XYZ, and the hypotenuse of the triangle is 14 in., and one leg is 10 in.

Now,

First draw the triangle XYZ.

Now,

From the triangle XYZ, XZ is hypotenuse of the triangle, XY is the first leg of the triangle, and YZ is second leg of the triangle.

So,

First leg z is 10, then find the value of second leg x.

Then,

To find the value of second leg, here use pythagoras theorem.

So,

From the pythagoras theorem;

[tex]XY^2+YZ^{2^{}^{}}=XZ^2[/tex]

Now,

[tex]\begin{gathered} XY^2+YZ^2=XZ^2 \\ 10^2+x^2=14^2 \\ 100+x^2=196 \\ x^2=196-100 \\ x^2=96 \end{gathered}[/tex]

Then,

[tex]\begin{gathered} x^2=96 \\ x=\sqrt{96}^{} \\ x=9.79 \end{gathered}[/tex]

Hence, the length of the other leg is 9.79.

A property owner paid $960 for the tiles to cover a 800 sq. ft yard. Then he decided to tile an additional 260 sq. ft. How much will be paid for the additional tiles?

Answers

Answer:

$312 will be paid for the addditional tile

Explanation:

Given that the property owner paid $960 for tiles to cover a 800 sq. ft yard

Since he decided to tile an additional 260 sq. ft, to know how much will be paid for the additional tiles, we need to know how much he paid for each of the last set of tiles.

The amount is

960/800 = 1.2

He paid $1.2 per tile.

For 260 sq. ft, he will pay:

$1.2 * 260

= $312

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