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jek_recluse [69]
2 years ago
10

Please help me with this question If you don't know Please don't answer

Mathematics
2 answers:
Afina-wow [57]2 years ago
6 0

Answer:

t squared over  9

Step-by-step explanation:

KatRina [158]2 years ago
5 0
T square over 9

Hope I helped a tiny bit
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1.7

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What is the distance between 15 miles east and 12 miles west?
inysia [295]

Answer:

27 miles.

Step-by-step explanation:

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7 0
2 years ago
How many times does the graph of the function below interect or touch the x-axis? y=-2x^2+3x+5
Andrei [34K]

Answer:

Two times at (-1,0) and (2.5,0)

Step-by-step explanation:

When the graph intersects or touches x-axis, y is equal to 0

so y = -2x^2 + 3x + 5

=> 0 = -2x^2 + 3x + 5

The formula to solve a quadratic equation of the form ax^2 + bx + c = 0 is equal to x = [-b +/-√(b^2 - 4ac)]/2a

so a = -2

    b = 3

    c = 5

substitute in the formula

x = [-3 +/- √(3^2 - 4x-2x5)]/2(-2)

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x = [-3 +/- 7]/(-4)

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x2 = (-3 - 7)/(-4) = -10/-4 = 5/2 = 2.5

so the graph has two x-intercepts (-1,0) and (2.5,0), therefore it intersects x-axis two times

7 0
3 years ago
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