Lin had $80 in her saving account. She used her debit card to make 3 purchase of $30 per purchase. How much was left in Lin's saving account?

Answer:

1 hour and 50 minutes will take to fill up a 300 gallon swimming pool explanation just do the quation/math

At a rate of 4 gallons per min , how long will it take to fill a 300 gallon swimming pool

Time to fill = Total Gallons of the Pool / Fill Rate

Time to Fill = 300 gallons / 4 gallons per minute

Time to Fill = 75 minutes

Answer:

x + y = 24

16x + 20y = 434

x = 11.5

y = 12.5

Step-by-step explanation:

Part A:

x + y = 24

16x + 20y = 434

Part B:

simplify the second equation to find a "kind of answer" to a variable,

so we could simplify it to either y = 21.7 - 0.8x or x = 27.125 - 1.25y

in this case we will use y = 21.7 - 0.8x

substitute your new value of y into the first equation:

x + (21.7 - 0.8x) = 24

now, we can solve this to find the actual value of x: x = 11.5

so plug in your real x value to the simplified second equation (y = 21.7 - 0.8x)

you get y = 12.5

this tells you how many hours the machine spent on making each type of item

Answer:

The length of the ladder  = 6.5077 ft

Step-by-step explanation:

Given A ladder leans against the side of a house

Given the angle of elevation of the ladder is 68° when the bottom of the ladder is 16 ft from the side of the house

Let 'C' be the point of observation.

Given CA= 16 ft

 From right angle triangle

     x = 16 × cos 68°

    x = 16 × 0.4067

    x = 6.5077

  x = 6.5 ft

The length of the ladder = 6.5 ft

Answer and Step-by-step explanation: (MAKE ME BRAINLIEST)

Simplified version

1) √14/6

2)√2

3)√7/3

4)√3/7

*step by step is shown in the photos.

Answer:

b and a

Step-by-step explanation:

i would go with b

Answer:

wiat

Step-by-step explanation:

The equation x² y² = 4 corresponds to a hyperbola when only considering x and y as variables. When considering x, y, and z as variables, the equation corresponds to a two-sheeted hyperboloid.

a) When only x and y are the variables being considered, the equation x² y² = 4 corresponds to a circle in the xy-plane. The circle has a center at the origin (0,0) and a radius of 2.

b) If x, y, and z are the only variables being considered, the equation x² y² = 4 still represents a circle in the xy-plane, but it becomes a cylinder along the z-axis. This cylinder has a center on the z-axis and a radius of 2, extending infinitely along the z-axis.

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The student did the subtraction step of PEMDAS out of order.

PEMDAS is a rule regarding precedence of operations, given as follows, from highest to lowest precedence.

In this problem, the expression is:

(6 - 2)² + 12  - 3².

The student reached an answer of 97 as follows:

(6 - 2)² + 9² = 4² + 9² = 16 + 81 = 97.

The student did the subtraction first, hence the student did the subtraction step of PEMDAS out of order.

The correct solution is:

(6 - 2)² + 12  - 3² -> Solve the Parenthesis.

4² + 12 - 3² -> Solve the Exponents.

16 + 12 - 9 -> Solve the Addition and Subtraction.

19.

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Answer:

scale factor of lengths = 3

Step-by-step explanation:

Given 2 similar figures with scale factor of lengths = k

Then scale factor of areas = k²

Given

scale factor of areas = 9 , then

scale factor of lengths = \(\sqrt{9}\) = 3

For a repeated-measures experiment comparing two treatment conditions, the t statistic has a df of 15. There were 16 subjects who participated in this study.

For a repeated-measures experiment with two treatment conditions, the degrees of freedom (df) for the t-test are given by:

df = N - 1

where N is the number of subjects in the study.

In this case, the t statistic has a df of 15.

Therefore, we can write:

15 = N - 1

Solving for N, we get:

N = 16

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We get minimum value of n  = 12.

What is linear equation and examples?

Total no of ways of choosing 4 persons out of a groups of n persons

                  = (n  4 ) = n(n - 1)(n - 2 ) ( n - 3)/24

According to the question  = ( n  4 ) = 365

⇒n(n-1)(n-2)(n-3) = 4 * 365 also n is a integer

By hit & and trial , we get minimum value of n  = 12

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The number of ounces for each of his friend is 7

From the question, we have the following parameters that can be used in our solution:

Number of ounces of the fruit punch = 49 ounces

Number of people = 7 people

From the above parameter, we can calculate the number of ounces per person to be:

The number of ounces per question is calculated as

Number of ounces = Number of ounces of the fruit punch/Number of people

Substitute the known values in the above equation

So, we have the following equation

Number of ounces = 49/7

Evaluate the quotient

Number of ounces = 7

Hence, the number of ounces per person 7

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Answer:

A, E, F

Step-by-step explanation:

Your welcome

Answer:

its a,d,c,e, and f

Step-by-step explanation:

Ratio analysis can be made more meaningful in all the following ways except by focusing more on long-term solvency than on short-term solvency.

Ratio analysis is a mathematical technique for analyzing a company's financial documents, such as the balance sheet and income statement, to gather knowledge about its liquidity, operational effectiveness, and profitability. Fundamental equity research is built on ratio analysis.

In order to get insights into profitability, liquidity, operational effectiveness, and solvency, ratio analysis examines line-item data from a company's financial statements.

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The full question:

ratio analysis can be made more meaningful in all the following ways except by?

The value of cos θ is equal to 1/3 when sec θ= √6/2.

Since we are given the value of secant of theta, we can use the relationship between secant and cosine to find the value of cosine of theta.

Let's start by recalling the definitions of secant and cosine functions. The secant of an angle is defined as the reciprocal of the cosine of that angle.

In other words, secθ = 1/cosθ

Conversely, the cosine of an angle is defined as the reciprocal of the secant of that angle.

cosθ = 1/secθ

We are given that secθ= √6/2

We can use this value to find cosθ= 1/secθ

cosθ = 1 / (√6/2)

To simplify this expression, we can multiply both the numerator and denominator by 2/sqrt(6).

cosθ = ((2/√6) / (√6/2) * (2/√6))

cosθ = (2/√6) / 1

cosθ = (2/√6 * √6/√6)

cosθ = 2/6 = 1/3

Therefore, the value of cosθ is equal to 1/3 when secθ = sqrt(6)/2.

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The condition of the correlation is given below:-

A. False,

B. False,

C. True.

Since the correlation value is simply the outcome of all the units in that variable interacting with one another, changing just one of the variables does not guarantee that the correlation value will change in the end.

We have been given three statements about the correlation. We are asked to determine which of the given statement are true.

(A) A correlation of 0.02 indicates a strong positive association.

We know that a correlation coefficient close to 1 represents a positive association and a correlation coefficient close to 0 represents a negative association.

Since our given correlation coefficient is close to 0, therefore, it represents a negative association and the given statement is false.

(B) Standardizing the variable will make the correlation 0.

We know that standardizing the variable does not change the correlation.

If the correlation between the variables was 0, then the correlation between standardized variables also will be 0. Therefore, the given statement is false.

(C) Adding an outlier can dramatically change the correlation.

We know that correlation is strongly influenced by outliers, therefore, the given statement is false.

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The value of the fractions will be:

1 1/4 + 3 1/2 - 3/4 = 4

The value of 15/8 × 4/45 will be 1/6

3/7 × 2/5 × 70/6 is 2

A fraction simply means a piece of a whole. In this situation, the number is represented as a quotient such that the numerator and denominator are split. In this situation, in a simple fraction, the numerator as well as the denominator are both integers.

1 1/4 + 3 1/2 - 3/4

= 1 1/4 + 3 2/4 - 3/4

= 4 3/4 - 3/4

= 4

The value of 15/8 × 4/45 will be:

= 15/8 × 4 / 45

= 15/2 × 1/45

= 1 / 2 × 1/3

= 1/6

3/7 × 2/5 × 70/6

= 1 × 2/5 × 10/2

= 2

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Step-by-step explanation:

Plot the point.

-1+3=2 and -2-5=-7

this is your new plot, (2,-7)

move the dot an equal distance across the x-axis, which is up and down.

Answer:

42:18:30

Step-by-step explanation:

42/7=6

3*6=18

5*6=30

Therefore, 42:18:30

Answer:

since the ratio is 7:3:5 and there are 42 yellow. since thats the case I divide 42 by 7 to get 6. so then 3*6= 18, and 5*6=30. so really there are 42 yellow: 18 pink balls: and 30 green balls so the total in the bag is 90 balls in the bag.

Step-by-step explanation:

Answer:

Plane RAT

Step-by-step explanation:

:]

The equation of the regression line for the given data can be determined by performing linear regression analysis.

The regression line represents the best-fit straight line that describes the relationship between the independent variable (number of years studied) and the dependent variable (proficiency exam grades). The equation of the regression line can be expressed as y = a + bx, where y is the predicted value of the dependent variable, x is the independent variable, a is the y-intercept, and b is the slope of the line.

To find the equation of the regression line, we first need to calculate the slope and y-intercept using the given data. We can use statistical software or a calculator to perform the regression analysis and obtain the values of a and b. Once we have these values, we can plug them into the equation of the regression line to get the final equation.

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Answer:

E

Step-by-step explanation:

2c + 7 > 0

2c > -7

c > -7/2

If c < -7/2

-2c -7 -3 > 4

-2c > 14

c < -7

if c > -7/2

2c + 7 -3 >4

2c >0

c >0

Answer: 12

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

65 ÷ 10 = 6.5

Divide 65 by 10 to figure out how many words he can text in one minute, which is 6.5.

143 ÷ 6.5 = 22

Divide 143 by 6.5 to get the amount of minutes it takes, which is 22.

Answer:

The required values are:-

x= 45/14 and y= -15/14

Answer:

Answer is option a) 4/5

Here value of opposite side is 40

And the value of hypotenuse is 50

Step-by-step explanation:

\( \sin(C) = \frac{opposite \: side \: }{hypotenuse} \\ = \frac{40}{50} \\ = \frac{4}{5} \)

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