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Angeline T.

Mensan. 93rd Percentile for SAT. Patient Tutor.

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SAT

TutorMe

Question:

A rectangle has a perimeter of 62 meters. If the long side is 9 less than 3 times the short side, how long is the short side?

Angeline T.

Answer:

The answer is 10 meters. We let x describe the short side. Then we define the long side by setting it equal to 3x-9. Since we know that a rectangle has two long sides and two short sides, we use the perimeter equation (2l + 2w = perimeter) and substitute our values to end up with 2(3x-9) + 2x = 62. We then solve for x, which is 10. The short side is 10 and the long side is (3x10)-9 or 21. Checking our values we get 21 + 21 + 10 + 10, which does, in fact, give us 62.

CSS

TutorMe

Question:

What are the three ways that you can define a color for a border attribute?

Angeline T.

Answer:

To define a color, you can use the hexadecimal method (e.g. #FF0000), the rgb method (e.g. rgb(255, 255, 255) ), or the name method (e.g. blue).

Algebra

TutorMe

Question:

What is the y-intercept of the following equation: 3x - 2y = 10

Angeline T.

Answer:

The y-intercept of an equation is the point at which the line intersects the y-axis on a graph. In other words, it is the value of y, when x is 0. To find the y-intercept, substitute 0 for x, and solve for y. In the given equation, the if x is 0, y is -5. So the y-intercept would be (0,-5).

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