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Answer:

it would be d 60t

Step-by-step explanation:

Lea and Marie are washing all the windows in their house. It would take Lea 80 minutes to wash the windows by herself, and it would take Marie 60 minutes to wash them by herself. Lea creates a table so she can find out how long it will take to wash the windows if they work together. What is the missing value in the table that represents the rate for Marie?

A table showing Rate in part per minute, Time in minutes, and Part of Windows Washed. The first row shows Lea, and has StartFraction 1 Over 80 EndFraction, t, and StartFraction 1 Over 80 EndFraction t. The second row shows Marie, question mark, t, and StartFraction 1 Over 60 EndFraction t.

so if she and her friend would be washing all of the windows in their house then their house is 60 cm and 60 in so the answer would be 60t

TRUE

A triangle cannot have more than one right angle

The triangle was known in China in the early 11th century by the mathematician Jia Xian (1010–1070)

What is a triangle?

A triangle has 3 medians and 3 altitudes. The outer angle of a triangle is equal to the sum of the opposite angles inside it. ∠ACD = ∠A + ∠B. Total Angle Properties: The sum of the three angles of the triangle is 180 °.

                        A triangle is a closed two-dimensional shape with three sides, three angles, and three vertices. Triangles are also polygons. The figure above is a triangle labeled △ ABC. Triangle example. Practical examples of triangles include sandwiches, traffic signs, hangers, and pool tables.

The three angles in the triangle, called the internal angles, always add up to 180 °. The sides that form an angle (the sides next to it) are called the adjacent sides of the angle. The opposite side (the side that crosses an angle and does not form part of it) is called the opposite side of the angle.

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To find the vertical asymptotic equations of the rational function, we must first find the points of intersection of the function with the x-axis. These points are the solutions of the equation f(x) = 0. We decompose the exponential function into the product of two expressions: f(x) = (x² + 9x)(x² - 2x - 15) Now we can set each of the expressions inside the parentheses equal to zero and solve the vertical asymptotic equations: x² + 9x = 0 or x² - 2x - 15 = 0 To solve the first equation, we can factor x out: x(x + 9) = 0 So the two vertical asymptote equations are x = 0 and x + 9 = 0 (that is, x = -9). To solve the second equation, we can use the analysis method or the quadratic formula. Using the analysis method, we can decompose the expression x² - 2x - 15 in the following form: (x - 5)(x + 3) = 0 Therefore, two vertical asymptote equations equal to x - 5 = 0 (that is, x = 5) and x + 3 = 0 (that is, x = -3). So the vertical asymptotic equations of the rational function f(x) = (x² + 9x)(x² - 2x - 15) are equal to x = 0, x = -9, x = 5 and x = -3.

Answer: B

Step-by-step explanation: You have no more than $65 which means you will want to spend equal to or less. Since you have $65, you will be able to spend up to that amount but you will not be able to spend any more than that. So, you will need to make sure the final price remains under or equal to your amount.

(5, 5) is the solution of the system 5x – y = 20 and 2x + y = 15

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

The given equations are

5x – y = 20

2x + y = 15

______________

7x=35

Divide both sides by 7

x=5

Now plug in value 5(5)-y=20

25-y=20

Subtract 20 on both sides

25-20=y

5=y

Hence, (5, 5) is the solution of the system 5x – y = 20 and 2x + y = 15

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