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aleksandrvk [35]
1 year ago
15

Need heeeelp please ​

Mathematics
1 answer:
Juliette [100K]1 year ago
5 0

Answer:

7.61577310586

Step-by-step explanation:

Pythagoras Theorem 7 squared + 3 squared= 49+9=58

\sqrt{58}

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Use the discriminant to describe the roots of each equation. Then select the best description.
Marrrta [24]
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The discriminant is b^2-4ac.  Substituting the above numeric values,
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Off the point example:  If the discriminant were zero, your poly would have two real, equal roots.</span>
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The total stopping distance T for a vehicle is T = 2.5x + 0.5x 2 , where T is in feet and x is the speed in miles per hour. Appr
Kobotan [32]

Answer:

%  change in stopping distance = 7.34 %

Step-by-step explanation:

The stooping distance is given by

T = 2.5 x + 0.5 x^{2}

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f (x + dx) = f (x)+ f' (x)dx

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Therefore

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This is the stopping distance at x = 25

Put x = 25 in above equation

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T(25) = 2.5 × (25) + 0.5 × 25^{2}

T(25) = 375 ft

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%  change in stopping distance = \frac{27.5}{375} × 100

%  change in stopping distance = 7.34 %

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