Joseph earns $15 for every lawn he mows. How much money did Joseph earn after mowing 1 lawn? Do not include units ($) in your answer.

There are 24,360 different lock combinations possible when selecting three numbers from 1 to 30 without repetition.

To find the number of different lock combinations possible, we can use the concept of permutations. Since we are selecting three numbers from a set of 30 numbers without repetition, the number of combinations can be calculated as:

30P3 = 30! / (30 - 3)!

Here, "P" represents the permutation.

Calculating the permutation:

30P3 = 30! / (30 - 3)!

= 30! / 27!

= 30 × 29 × 28

= 24,360

Therefore, there are 24,360 different lock combinations possible when selecting three numbers from 1 to 30 without repetition.

To know more about repetition refer here:

https://brainly.com/question/28014744#

#SPJ11

To multiply these fractions, we can simplify each fraction first:

64e^2/5e * 3e/8e = (8*8*e*e)/(5*e) * (3*e)/(2*2*2*e)

Next, we can cancel out common factors between the numerators and denominators:

= (8*8*1*1)/(5*1) * (1*1)/(2*2*2*1)

= 64/5 * 1/8

= 8.

Answer:

24e^2/5e my answer needs to be 20+characters sooooooooooo

A situation in which it is inappropriate to use the correlation to measure the association between two quantitative variables is when the association is not linear. The answer is option C.

Correlation is a statistical measure that explains the degree to which two variables are related to each other. There are certain situations when it is not appropriate to use correlation to measure the association between two quantitative variables. One such situation where it is inappropriate to use correlation is to measure the association between two quantitative variables. When the association between the two variables is non-linear, it is not appropriate to use correlation to measure their association. Correlation measures how closely two variables are related to each other in a straight line manner. However, if the relationship between the variables is not linear, it is not possible to capture the relationship by measuring the correlation coefficient.

Therefore, the correct answer is option C - When the association is not linear.

Learn more about correlation:

brainly.com/question/28175782

#SPJ11

The required value of y for the unit circle is: 2/3

The circle is defined as the locus of a point whose distance from a fixed point is constant i.e center (h, k).

The equation of the circle is given by:

(x - h)² + (y - k)² = r²

where:

h, k is the coordinate of the center of the circle on coordinate plane.

r is the radius of the circle.

Here,

Equation of the unit circle is given as,

x² + y² = 1

Now substitute the given value in the equation,

5/9 + y² = 1

y² = 1 - 5/9

y² = 4/ 9

y = √(4/9)

y = 2/3

Thus, the required value of y for the unit circle is 2/3

Read more about Unit Circle at: https://brainly.com/question/26284611

#SPJ1

Answer: -6x^2-xy+15y^2

Step-by-step explanation:

The value of B-A is -6x²-xy+15y² .

A statement where the algebraic expressions are equated with an equal sign with each other is called an Equation.

It is given that

A = 5x²+3xy-7y²

B = -x²+2xy+8y²

To calculate is B - A

B- A = ²   (-x²+2xy+8y²) - (5x²+3xy-7y² )

B-A = -x²+2xy+8y² - 5x²- 3xy +7y²

B-A = -6x²-xy+15y²

Therefore the value of B-A is -6x²-xy+15y² .

To know more about Equation

https://brainly.com/question/10413253

#SPJ2

Answer:

4030 or 3040 I think 4030 though

Step-by-step explanation:

I think this is it but 6*8 is 48....I used a little logic so hopefully this is right

Answer:

4030

Step-by-step explanation:

if 9× 7 = 3545 then it 7 × 5, 9× 5 which gives 3545

4x3 = 3× 5, 4×5 which gives 1520

so 6× 8 will give 8×5, 6×5 = 4030

The total volume in Cr is 688,500 cubic yards.

The calculation of the area at each station in square feet (sf), and then calculating the volume between each station and the prior station in cubic yards (cy) by adding up the volumes to come up with the total volume in Cr, is as follows:

Given data:

Spacing between the stations = 50 feet

Length of each station = 100 feet

Depth of each station = 1.5 feet

Area of each station = 2 (h1 + h2) × w

where

w = width of the trapezoid,

h1 = depth at the beginning,

h2 = depth at the end

The depth at the beginning

h1 = 1.5 feet

The depth at the end h2 is given by the equation:

h2 = 2.5 - (0.025 × x),

where x is the distance from the starting point in feet.

At x = 0,

h2 = 2.5 - (0.025 × 0)

= 2.5 feet

At x = 50,

h2 = 2.5 - (0.025 × 50)

= 1.25 feet

At x = 100, h2

= 2.5 - (0.025 × 100)

= 0 feet

Now we can calculate the areas as follows:

Area at station 1 = 2 (1.5 + 2.5) × 50

= 200 sf

Area at station 2 = 2 (1.5 + 1.25) × 50

= 150 sf

Area at station 3 = 2 (1.5 + 0) × 50

= 150 sf

Next, we need to calculate the volume between each station and the prior station in cubic yards (cy) using the formula:

Volume (net cy) = 2 (A1 + A2) × 27L

where A1 and A2 are the areas of the two adjacent stations, and L is the spacing between them.

Using this formula, the volume between station 1 and 2 is:

Volume (net cy) = 2 (200 + 150) × 27 × 50

= 364,500 cy

The volume between station 2 and 3 is:

Volume (net cy) = 2 (150 + 150) × 27 × 50

= 324,000 cy

Therefore, the total volume in Cr is:

364,500 cy + 324,000 cy

= 688,500 cy

So the total volume in Cr is 688,500 cubic yards.

To know more about cubic yards visit:

https://brainly.com/question/17652034

#SPJ11

Answer:

First one is quinton

second one is 900

Step-by-step explanation:

Answer:

Card #10: Quiesha is right

Card #6: Ulysses is right

square root(3) * ((125 / 5) - 8) =

29.44

that's the final answer.

if possible please give me a brainliest. tnx good day

Answer:

yeah its correct

Step-by-step explanation:

Answer:

\(\boxed {\mathfrak {B) 1.6}}\)

Step-by-step explanation:

B) \(r-value\) \(cant\) \(be\) \(1.6\)

\(-1 \leq r\leq 1\)

\(-----\)

Answer:

(3x • 5 = 7)

your welcome

Answer:

Negative one-half (negative 2) (x + 3) = negative 10 (negative one-half

Answer:

1 = 130

2 = 50

3 = 130

Step-by-step explanation:

Since we already know that one angle is 50 degrees, this also tells us that angle two is congruent to it because it is opposite to it. Now the two other adjacent angles, basically just do 180-50 to get 130.

Answer:

The quadrilateral formed is a trapezoid

Step-by-step explanation:

In this case, it is necessary to know what points A, B, C, and D.

If the points are equal to the following coordinate points

A (-2, 1)

B (2, 1)

C (3, -2)

D (-3, -2)

As shown in the image the answer would be a trapezoid.

________________________________

The figure cannot be a square, a rhombus or a rectangle since by definition these are:

A square has all sides of equal length and all its right angles.

A rhombus is a parallelogram that has all sides of equal length and all its angles different from right angles.

A rectangle is a parallelogram that has all its right angles.

The figure that we obtain is neither a parallelogram nor does it have all its right angles.

The OLS estimator b in the presence of measurement error will be unbiased if certain conditions are met. The variance of b|X is larger than the variance of b*|X due to the additional measurement error.

i) The least squares problem for equation (3) is formulated as follows: minimize the sum of squared residuals, SSR(b) = (y - Xb)'(y - Xb). The first-order conditions give ∂SSR(b)/∂b = -2X'y + 2X'Xb = 0. Solving for b, we get b = (X'X)^(-1)X'y, which is the OLS estimator.

ii) The OLS estimator b will be unbiased if E(ν|X) = 0 and X is of full rank. Additionally, the error term ε should satisfy the classical linear model assumptions, including E(ε|X) = 0, var(ε|X) = σε^2In, and ε being uncorrelated with X.

iii) The variance of b|X is given by var(b|X) = σε^2(X'X)^(-1). Comparing it to var(b*|X), we find that var(b|X) is larger due to the presence of measurement error. The additional error term η introduces more variability into the estimated coefficients, leading to a larger variance compared to the scenario where y* is observed directly.

Therefore, The OLS estimator b in the presence of measurement error will be unbiased if certain conditions are met. The variance of b|X is larger than the variance of b*|X due to the additional measurement error.

To learn more about OLS click here

brainly.com/question/33206061

#SPJ11

Answer:

SAS

Step-by-step explanation:

AB congruent to MN

Angle B congruent to Angle N

BC congruent to NP

Check both triangles

So

Two sides are equal and their corresponding angles are equal

Answer:

The dependent variable is the number of plays he carries the ball.

The independent variable is the number of touchdowns he scores.

The dependent variable is the number of yards he gains.

Step-by-step explanation:

Tom's coach keeps track of the number of plays that Tom carries the ball and how many yards he gains. Select all the statements about independent and dependent variables that are true.

The dependent variable is the number of plays he carries the ball.

The independent variable is the number of plays he carries the ball.

The independent variable is the number of touchdowns he scores.

The dependent variable is the number of yards he gains.

The dependent variable is the number of touchdowns he scores.

y = kx

y = dependent variable. it is the variable that is explained by the dependent variable

x = is the variable that explains the dependent variable

A common everyday counting unit that is used to mean 12 of an object is a Dozen

Dozen is derived from the Old French word "douzaine" which means twelve each. In most situations, a dozen is used to refer to a group of twelve items. The term dozen is also used in informal situations to refer to a very large number of objects. For example, one might say "I have dozens of friends!" to mean that they have a lot of friends.

Dozen is a useful term when counting items. It allows for large numbers to be easily broken down into manageable groups. For example, if you have 120 pencils, you could easily count them by saying that you have 10 dozen pencils. It can also be useful when talking about fractions. For example, instead of saying "one and a half of an item," one could say "one and a half dozen of an item."

Dozen is a common everyday counting unit that is used to mean 12 of an object. It is a useful term when counting items and when talking about fractions, and can be used in both formal and informal settings.

Know more about a Dozen here :

https://brainly.com/question/30948187

#SPJ11

Answer:

The function graphed below is \(x = y^{2} - 2\) or \(y = \pm \sqrt{x+2}\).

Step-by-step explanation:

The graph represents a second order polynomial function (a parabola), whose axis of symmetry is the x-axis and whose form is presented as follows:

\(x - h = C\cdot (y-k)^{2}\)

Where:

\(x\), \(y\) - Dependent and independent variable, dimensionless.

\(h\), \(k\) - Horizontal and vertical components of the vertex, dimensionless.

\(C\) - Vertex constant, dimensionless. If \(C > 0\), then vertex is an absolute minimum, otherwise it is an absolute maximum.

After a quick observation, the following conclusions are done:

1) Vertex is an absolute minimum (\(C > 0\)) and located at (-2, 0).

2) Parabola pass through (2, 2).

Then, the value of the vertex constant is obtained after replacing all known values on expression prior algebraic handling: (\(x = 2\), \(y = 2\), \(h = -2\), \(k = 0\))

\(2+2 = C\cdot (2-0)^{2}\)

\(4 = 4\cdot C\)

\(C = 1\)

The function is:

\(x = -2 + 1\cdot y^{2}\)

\(x = y^{2}-2\)

The inverse function of this expression is \(y = \pm \sqrt{x+2}\)

The function graphed below is \(x = y^{2} - 2\) or \(y = \pm \sqrt{x+2}\).

Answer:

100

Step-by-step explanation:

Given :

Terms ( n ) = 100

First term ( a ) = 100

Series = > 100 + 98 + 96 .......

Common difference ( d ) = 98 - 100 = > - 2

We know sum formula:

S_n = ( n / 2 ) ( 2 a + ( n - 1 ) d )

= > S_100 = ( 100 / 2 ) ( 200 + ( 100 - 1 ) - 2 )

= > S_100 = 50 ( 200 - 198 )

= > S_100 = 50 ( 2 )

= > S_100 = 100

Therefore, sum of first 100 terms is 100.

Answer:

Step-by-step explanation:

Answer:

45 is the answers for the question

Step-by-step explanation:

please mark me as brainlest and follow me

\( \Huge\begin{gathered} {\underline{\boxed{ \mathcal {\red{5 \: \times \: 9 \: = \: 45}}}}}\end{gathered}\)

The lengths of sides of the unknown are:

The value of x can be obtain as follow:

Sine θ = opposite / hypotenuse

Sine 30 = 29.5 / x

Cross multiply

x × sine 30 = 29.5

Divide both sides by sine 30

x = 29.5 / sine 30

Value of x = 59

The value of y can be obtain as follow:

Tan θ = opposite / adjacent

Tan 30 = 29.5 / y

Cross multiply

y × Tan 30 = 29.5

Divide both sides by Tan 30

y = 29.5 / Tan 30

y = 29.5 ÷ 1/√3

y = 29.5 × √3

Value of y = 29.5√3

Learn more about lengths of triangle:

https://brainly.com/question/17307037

#SPJ1

Socioeconomic factors and public health initiatives might also play a role in these improvements. In conclusion, it is essential to consider lurking variables when analyzing correlations to avoid falsely attributing causation.

a) While there is a strong negative correlation between the number of infant deaths at birth and the number of people over age 65, it is not necessarily true that people living longer is causing a decrease in infant mortalities at birth. Correlation does not equal causation, and there may be other factors at play.
b) Possible lurking variables that could be causing an increase in one or both of the variables include advances in medical technology and access to healthcare, changes in maternal health behaviors, and socioeconomic factors such as poverty and education level. It is important to consider these variables when analyzing the correlation between infant deaths at birth and the number of people over age 65. A negative correlation between infant deaths at birth and the number of people over age 65 does not imply causation. It is unlikely that people living longer directly causes a decrease in infant mortalities at birth. Instead, lurking variables could be influencing both factors. Potential lurking variables include advances in medical technology and healthcare access. Improved healthcare could contribute to both a decrease in infant mortality rates and an increase in life expectancy for the elderly. Additionally, socioeconomic factors and public health initiatives might also play a role in these improvements. In conclusion, it is essential to consider lurking variables when analyzing correlations to avoid falsely attributing causation.

To know more about variables visit:

https://brainly.com/question/15078630

#SPJ11

Answer:

y = x - 12

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 1 , then

y = x + c ← is the partial equation

To find c substitute (13, 1) into the partial equation

1 = 13 + c ⇒ c = 1 - 13 = - 12

y = x - 12 ← equation of line

The dependent variable in this hypothesis is test performance.

What is a dependent variable?

In mathematical modelling, statistical modelling, and experimental sciences, there are dependent and independent variables. Dependent variables get their name because, during an experiment, one‘s values are examined under the assumption as well as demand that they are dependent on the value of another variable due to some law or rule (for example, a mathematical function). In the context of the experiment in question, independent variables are those that are not thought to be depending on other variables. Time, space, specific gravity, mass, fluid flow rate and previous values of certain observed value of interest (such as the size of the human population) are examples of common independent variables that can be used to forecast future value systems (the dependent variable).

The outcome of this hypothesis is the dependent variable.

Hence, the dependent variable in this hypothesis is test performance.

To learn more about the dependent variable

https://brainly.com/question/13172624

#SPJ4

We can form the eq. for y,

→ 6x - y = 2

→ y = 6x - 2

Then the value of x will be,

→ -4x + 3y = 1

→ -4x + 3(6x - 2) = 1

→ -4x + 18x - 6 = 1

→ 14x = 1 + 6

→ x = 7/14

→ [ x = 1/2 ]

Hence, the value of x is 1/2 (or) 0.5.

Now the value of y will be,

→ y = 6x - 2

→ y = 6(1/2) - 2

→ y = 3 - 2

→ [ y = 1 ]

Hence, the value of y is 1.

Answer: The second type of investment earns greater amount of interest.

Step-by-step explanation:

1)

SI = prt / 100

= 10000 x .02 x 4

= 8000

2)

At compound intetest

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

= 108307.12

Interest = 108307.12 - 100000 = 8307.12

Difference

8307.12 - 8000 = 307.12

Answer:

7

Step-by-step explanation:

it is a 16 digit credit card number. Therefore, start from the first digit and double alternating digits. Add them and the non doubled digits. should be divisible by 10. For double digits, they are added to make single digit.

9+3+8+3+9+4+7+5+6+1+5+3+4+3+3+x = 73+x

final number should be divisible by 10.

x=7