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myrzilka [38]
3 years ago
5

Choose the best score on a quiz 15 points out of 25

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
6 0

15 out of 25 is a 60%

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a railroad track rises 30feet for every 400 feet of track. what is the measure of the angle of elevation of the track?
tensa zangetsu [6.8K]
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Answer:

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Step-by-step explanation:

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3 years ago
Each term of the first polynomial is ____________ to each term in the second polynomial
Georgia [21]

9514 1404 393

Answer:

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Step-by-step explanation:

To multiply two polynomials, each term of the first polynomial is <u>multiplied</u> to each term in the second polynomial. Combine any <u>like terms</u> to simplify.

3 0
3 years ago
Consider the parabola represented by the equation -2y^2=4x
stepan [7]
Part 1: The general form for this matches y^2 = -4cx, which implies that this opens to the left. (Imagine assigning any value of y, whether positive or negative, which would result in a positive left-hand value. Then to match this sign, the value of x must be negative so that the right-hand side becomes positive as well.)

Part 2: The distance from the vertex to the directrix is given by c. This equation has its vertex at the origin (0, 0). If it opens to the left, the directrix is a vertical line to the right of the origin. This equation is y^2 = -4(1/2)x, so c = 1/2, and the directrix has the equation x = 1/2.

Part 3: The focus is inside the parabola, but it is the same distance from the vertex as the directrix. This distance is 1/2 units, and it will be to the left of the vertex. So the focus is at (-1/2, 0).
5 0
3 years ago
I need help with this question
Lunna [17]
{3,4,5,6} should be the answer
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3 years ago
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