what is the gcf of 81 and 72

=================================================

Work Shown:

Plug the first equation into the second equation.

2x - y = 5

2x - (3x-1) = 5

2x - 3x+1 = 5

-x+1 = 5

-x = 5-1

-x = 4

x = -4

Use this to find the value of y.

y = 3x-1

y = 3*(-4)-1

y = -12-1

y = -13

The solution is (x,y) = (-4,-13)

This points to    choice A    as the final answer.

You can use graphing software like Desmos or GeoGebra to confirm that the two lines intersect at (-4,-13).

Answer:

20

Step-by-step explanation:

4 ÷ 1/5  Multiply by the reciprocal (turn the fraction upside down)

4 x 5 = 20

The tablet is 99% effective if used correctly.

However, since individuals make mistakes and it's easy to forget or overlook pills, the actual effectiveness of the pill is only about 93%. Accordingly, 7 out of every 100 women who take pills annually become pregnant.

Depending on the type of pills you're utilizing and when you start taking them. The birth control pill can be started on any day of the month. However, for up to 7 days, you might need to use a backup birth control method, such as condoms, depending on when you start and the type of pill you're taking.

Know more about birth control pill

https://brainly.com/question/2296833

#SPJ4

On solving the provided question, we can say that The pieces were dangerous to interests in national security

Simple interest is calculated by dividing the principal by the interest rate, the passage of time, and other elements. The formula used in marketing is simple return = principal + interest + hours. Using this approach, interest may be calculated most easily.

The pieces were dangerous to interests in national security . A general who opposed the US involvement in Vietnam sent the Times a number of documents from 1971 that have come to be known as the "Pentagon Papers." On the basis of security concerns, the US attempted to prevent them further dissemination but failed.

To know more about interest visit:

https://brainly.com/question/28792777

#SPJ4

Answer:

x≥-8

Step-by-step explanation:

Because we don't know the first number mentioned, we can name it as x

Since the problem starts off with "twice a number" so we mark it as 2x and then it states to take the difference of that number and 9. So the new problem we have is 2x-9=?. Now, the answer that we have is at least -25, so the answer is no longer an equal sign, but a greater-than or equal-to sign. Making our new equation 2x-9≥-25. Now we can act as if its a normal equation, adding 9 to both sides making it 2x≥-16, divide both sides by 2 to get x≥-8.

An extra step to ensure our answer is more than or equal to -8 is by plugging in -8 AND another number that is more than -8. 2(-8)-9=? which we would find that ? is -25. A number that is greater than -8 could be -1, which we would test by doing 2(-1)-9=?. ? would be equal to -11 so we know that our final answer of x≥-8 is correct.

Answer:

p

Step-by-step explanation:

no of dimes you have =17

no of dimes your brother have=8

now

no of dimes more you have save =17-8

=9

hence you have saved 9 more dimes

Answer:

294

Step-by-step explanation:

We will take our equation, and substitute in 7 for s, wherever we see it, so we have:

[tex]6 * 7^{2}[/tex]

Simplifying, we have:

[tex]6 * 49[/tex]

Which finally we multiply to:

6 * 49 = 294

So, your answer is 294.

Hope this helped!

Answer:3.41

Step-by-step explanation:it is pie

Answer:

119 eggs

Step-by-step explanation:

To start off, we know that this number has to be of some multiple of 7. Because if the eggs are taken out 7 at a time, and no eggs are left over, then the total number of eggs can be divisible by 7. Because there is however a multiple if you take out the eggs 2-6 times, there are eggs left over. The smallest multiple of 7 we can test is simply 7. To check, we can start with dividing 7 by 6 and getting a remainder of 1 instead of 5. So we know that 7x1 doesn't work.

The next smallest multiple of 7 that isn't multiplied from 2-6 is 7x7 to get 49. from here we can check that 49/6 = 8 r1 (r meaning remainder). So we know that 7x7 can't work. From here, the next smallest number would be 7x11.

7x11 = 77. 77/6 is 12 r5. This so far looks good. Now we can try 5. 77/5 = 15 r2. This doesn't work, so we try the next largest number which is 7x13 which is 91.

91/6 = 15 r1 which doesn't work. Next we try 7x17 which is 119. 119/6 is 19 r5 (looks good), 119/5 = 23 r4 (looks good), 119/4 is 29 r3, 119/3 is 39 r2, and 119/2 is 59 r1! Which means our answer is that the least number of eggs in the basket is 119.

The equation must satisfies the Kent calculation is k² - 8k + 12 = 0

The term equation in math is called as a mathematical expression that contains an equals symbol.

Here we have given that Kent multiplies both sides of the equation below by an expression.

And then he moves all the terms to one side of the equal sign in the resulting equation.

Here we have the given equation is

=> k+12/k= 8

When we multiply both sides by k.

=> k² + 12 = 8k

Now we have to subtract 8k from both sides to move all the terms to one side of the equal sign then we get

=> k² + 12 - 8k = 0

Hence the required equation is k2 - 8k + 12 = 0.

To know more about equation here.

https://brainly.com/question/10413253

#SPJ4

The mean number of points for all 5 games is 4 points.

The arithmetic mean is defined as the ratio of the sum of observations to the total number of observations. It can be referred to as the average of a specific set of data or the arithmetic mean.

The formula for the mean of a given set of data is as follows:

Mean = Sum of Observations/Total number of observations

As per the question,

Here, n = 5

⇒ ∑x = Sum of Observations

⇒ ∑x = 10 + 3 + 2 + 5 + 0 = 20

Mean = ∑x/n

Mean = 20/5

Mean = 4

Hence, the mean of the given data is 4.

Learn more about Arithmetic means here:

brainly.com/question/13000783

#SPJ1

To get to the mall, you'll need to find the shortest path from your home to the mall.

The Manhattan Distance formula is an efficient way to calculate the shortest path between two points on a rectangular grid. The formula is as follows:

MD = |x1-x2| + |y1-y2|

Where MD is the Manhattan Distance, x1 and y1 are the coordinates of your home, and x2 and y2 are the coordinates of the mall.

To find the shortest path, simply plug in the coordinates for your home and the mall into the formula and calculate the Manhattan Distance. The result is the shortest number of blocks you need to travel to get to the mall.

For more questions like Manhattan Distance click the link below:

https://brainly.com/question/29445735?

#SPJ4

The correct option when Triangle ABC is transformed to triangle A′ B′ C is A.The measure of angle BCA = The measure of angle C prime A prime B prime.

Triangle ABC is changed into triangle A′B′C′ and on the x- and y-axes, a coordinate grid ranging from -4 to -4 to 4 is displayed. A is at ordered pair negative 1, 3, B is at ordered pair 0, 1, and C is at ordered pair negative 3, 0 in the triangle ABC.

A triangle Primes A, B, and C have A prime is at ordered pair minus 1, minus 3, B prime is at ordered pair minus 0, and C prime is at ordered pair minus 3, 0.

A triangle A prime B prime C prime has A prime at ordered pair negative 1, negative 3, B prime at ordered pair 0, negative 1, C prime at ordered pair negative 3, 0.

Therefore,

<BAC = <B'A'C'

<ABC = <A'B'C'

<ACB = <A'C'B'

In this case, the correct option is A.

Learn more about triangles on:

https://brainly.com/question/17335144

#SPJ1

The required values of the events are P(Sum > 5) = 0.72 , P (sum is even) = 0.5.

Simply put, probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes. Statistics is the study of events that follow a probability distribution.

We have,

According to empirical or relative frequency probability, probabilities are determined by dividing the total number of potential outcomes of an experiment by the number of ways an event could occur.

There are a total of 36 possible results when a fair die is rolled twice consecutively, which is

(1,1), (1, 2), (1,3), (1,4), (1, 5), (1, 6)

(2,1), (2, 2), (2, 3), (2,4), (2,5), (2,6)

(3, 1), (3,2), (3, 3), (3, 4), (3, 5), (3, 6)

(4, 1), (4,2), (4,3), (4, 4), (4, 5), (4, 6)

(5, 1),(5, 2), (5, 3), (5,4), (5,5), (5, 6)

(6,1), (6, 2), (6,3), (6,4), (6,5), (6,6)

Event A: The total exceeds 5. We find 26 numbers in the table that are bigger than 5, so

P(A) = P(Sum > 5) = 0.72 Event

B: The results of the total are even from the table are 18

P(B) = P (sum is even) = 0.5

To know more about Probability visit:

brainly.com/question/30034780

#SPJ4

Answer:

D. the experiment

Step-by-step explanation:

The hypothesis becomes the basis of the experiment.

[tex] \frac{5a}{r} \: - 2 = y[/tex]

Step-by-step explanation:

A = r(y +2) /5

A×5 = r(y+2)

(5A)/r = y+2

(5A)/r - 2 = y

•: y = (5A)/r - 2

(only applicable when

[tex]a = \frac{ry + 2r}{5} [/tex]

expand)

The equation [tex]4x^2+12x+9=0[/tex] has only one solution, and the type of solution is rational.

Finding the value of the given equation's unknown variables is a step in the equation-solving process. The value of the variable satisfies the requirement that the two expressions are equal. When a linear equation has one variable, there is only one solution; when there are two variables, there are two solutions. A quadratic equation's solution yields two roots. To solve an equation, a variety of techniques and steps are used. Let's go over each method for solving an equation in detail one by one.

Here steps for solving an equation are given below.

[tex]4x^2+12x+9=0\\4x^2+6x+6x+9=0\\2x(2x+3)+3(2x+3)=0\\(2x+3)(2x+3)=0\\2x=-3\\x=\frac{-3}{2}[/tex]

Here both solutions are same so the equation [tex]4x^2+12x+9=0[/tex] has only one solution and the type of solution is a rational solution.

Know more about type of solution:

https://brainly.com/question/28805070

#SPJ4

Answer:

0.15

Step-by-step explanation:

Factors of 12 are 1, 2, 3, 4, and 6.

Only 5 is not a factor of 12.

The probability of rolling a 5 is 15 / 100, or 0.15, or 15%.

Answer: acute-angled triangles.

Step-by-step explanation:

Equilateral Acute Triangle. An equilateral acute triangle is that type of acute triangle that has all its interior angles measuring 60°.

Isosceles Acute Triangle.

Scalene Acute Triangle

Answer:

Based on the given information, we know the following:

Solid A is formed by joining one hemisphere to the frustum of a cone.

Solid B is formed by joining the other hemisphere to the small cone that was removed from the large cone.

The volume of solid A is 6 times the volume of solid B.

We can use the formulas for the volume of a hemisphere and a frustum of a cone to represent the volumes of solids A and B.

The volume of a hemisphere is (2/3)πr^3, where r is the radius of the hemisphere.

The volume of a frustum of a cone is (1/3)πh(R^2+r^2+Rr), where h is the height of the frustum, R is the radius of the larger base and r is the radius of the smaller base.

The volume of a cone is (1/3)πr^2h

Let's call the height of the frustum h, the radius of the large base R and the radius of the small base r

We can set up the equation: (2/3)πr^3 = 6((1/3)πr^2h + (1/3)πR^2h + (1/3)πRrh)

After simplifying, we get:

2h = 12r + 12Rh + 6Rr

We know k = (R/r)^(1/3)>(7)^1/3, we can substitute it into the equation:

2h = 12r + 12rk + 6rk^2

Solving for h, we get:

h = 6rk + 6rk^2

So h is expressed in terms of k and r.

There are 7!/3! ways for 8 people to sit around a circular table if Alice, Bob, and Eve do not want to sit next to each other.

Rotation is the process of rotating an object in two or three dimensions around an axis. This axis can be a point in space, a line, or a plane. Rotation can also refer to a continuous change of direction, such as the rotation of the Earth around its axis. Rotation can be described using terms such as clockwise, counterclockwise, and angular velocity. Rotation can also be described using mathematical equations, such as Euler's rotation theorem. Rotation can be used to create symmetry in design, or to create motion in an animation.

This is because we can pick any of the 7 people to be seated first, then any of the 6 people to be seated second, then any of the 5 people to be seated third, and so on. However, since Alice, Bob, and Eve do not want to sit next to each other, we must divide the 7! by 3! to account for the fact that the order in which Alice, Bob, and Eve are seated does not matter. The 3! accounts for the fact that we could arrange the three of them in 3! = 6 different orders. Therefore, the total number of ways for 8 people to sit around a circular table if Alice, Bob, and Eve do not want to sit next to each other is 7!/(3!) = 840 ways.

To know more about rotation click-
https://brainly.com/question/26249005
#SPJ4

Answer:

(5, 0)

Step-by-step explanation:

The slope of the first line is -(-1 / 1) = 1.

The slope of the second line is -(3 / 5) = -3/5.

Since the lines have different slopes, they intersect at a single point. Therefore, there is only one solution. To find it, solve the system of equations.

Using elimination, multiply the first equation by 3 and add it to the second.

-3x + 3y = -15

3x + 5y = 15

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

8y = 0

y = 0

Using substitution, find x:

-x + 0 = -5

x = 5

The solution is (5, 0).

The probability that four marbles are chosen from the jar with the replacement and that they are all white is p^4 (p raised to the fourth power).

If four marbles are chosen from a jar with replacement, the probability that they are all white is (probability of drawing a white marble)^4.

If the marbles are chosen with replacement, the probability of choosing a white marble on any one draw is the same as the proportion of white marbles in the jar. Let's call this probability p. The probability that all four marbles chosen are white is p^4 (p raised to the fourth power).

Learn more about probability here: https://brainly.com/question/24756209

#SPJ4

The cost function is  [tex]C(x)=[/tex] [tex]\left \{ {{35} \atop {(0.1t-5)}} \right.[/tex] .

The application of the idea of kinds of functions is the foundation of this issue. We will create and classify the sort of function we have using the provided information.

According to the given information, the cell phone plan has a basic charge of $45 a month. The plan includes 500 free minutes and charges 10 cents for each additional minute of usage.

Let t be the number of minutes the cell phone is used.

So, for 0≤t≤500 it will cost only the basic charge of $45.00

For an additional minute of usage, it costs 10 cents or $0.1 in addition to the basic charge. So, our function looks like:

f(x)=45+0.1(t-500)=45+0.1t-50 = (0.1t-5), for 500 ≤ t ≤ 700.

Thus, the cost function looks like:

C(x) = [tex]\left \{ {{35} \atop {(0.1t-5)}} \right.[/tex]

To know more about cost function visit: brainly.com/question/28394132

#SPJ4

The area of a regular octagon inscribed in a circle of radius 4 meters is 45.255 square meters. So, option C is correct

An octagon is a polygon with 8 sides, and a regular octagon has all sides of equal length. To find the area of a regular octagon inscribed in a circle of radius 4 meters, we can use the formula:

Area = (2 * (4^2) * (1 + sqrt(2))) / (4 * tan(pi/8))

Plugging in the values we get:

Area = (2 * (4*cos(pi/8))^2 * (1 + sqrt(2))) / (tan(pi/8)) = 16 * (1 + sqrt(2)) * (sqrt(2) / sqrt(2+ sqrt(2)))

        = 8 * 1/2 * 4 * 4 * sin45°

        = 32√2

        = 45.255 square meters.

Therefore, the area of a regular octagon inscribed in a circle with a radius of 4 meters is 45.255 square meters.

To learn more about a regular octagon:

https://brainly.com/question/30131610

#SPJ4

Answer:

Substitute x = 11 to x + 4, you get,

11 + 4 = 15

Thanks

[tex]x+4[/tex] when x is equal to 11

Evaluate:

[tex](11)+4[/tex]

[tex]=15[/tex]

To graph a system of equations, you can first solve each equation for y, and then plot the solutions on the same coordinate plane.

For the first equation, 8x + 8y = 64, we can solve for y by subtracting 8x from both sides, which gives us 8y = 64 - 8x. Then we divide both sides by 8 to get y = (64 - 8x)/8.

For the second equation, 2x - 2y = -4, we can solve for y by adding 2x to both sides, which gives us 2y = 2x - 4.

So the solutions for y in the first equation are:

y = (64 - 8x)/8

and in the second equation are:

y = 2x - 4

We can now plot these two lines on the same coordinate plane. The point of intersection of these two lines will be the solution of the system of equations

Answer is attached in the graph.

Step by step

The easiest way to solve these is to graph on an internet or app graphing calculator.

To graph by hand you need to simplify them and arrange in slope intercept form y=mx + b

(#1)

8x + 8y = 64 all are divisible by 8

8/8x + 8/8y = 64/8

Simplify

x + y = 8

Arrange in slope intercept form

subtract x from both sides to isolate y

x - x + y = -x + 8

y = -x + 8

We plot the first point of y intercept of 8 (0,8) and plot the 2nd point by slope of -1/1 or

( 1, -1). Draw your line

(#2)

2x - 2y = -4 are all divisible by 2

2/2x - 2/2y = -4/2

Simplify

x - y = -2

Arrange in slope intercept form

subtract x from both sides to isolate y

x - x - y = -x -2

Simplify

-y = -x -2

Change the signs by multiplying all by -1

y= x +2

We plot the first point of y intercept

of 2 (0, 2) and plot the 2nd point by slope of 1/1 or ( 1, 1). Draw your line

Now you can find the solution is where the lines intersect. At (3, 5)

See my attached graph for your two line equations below

y = x + 2

y = -x + 8