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Mandarinka [93]
3 years ago
10

La fórmula para calcular la distancia de "d" en pies, necesaria para detener un auto sobre una superficie con nieve es d=1/6 x^2

, donde x es la velocidad del auto en millas por hora, antes de que se apliquen los frenos. Si la distancia necesaria para detener un auto fue de 150 pies, ¿Cual era la velocidad del auto antes de que de aplicarán los frenos?
Con planteamiento, Porfavor.
Mathematics
1 answer:
spin [16.1K]3 years ago
8 0
D=1/6 x^2
150=1/6 x^2
*6     *6
900=x^2
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blondinia [14]

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27 / 4.5 = 6

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5 0
4 years ago
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3 years ago
Josh went to applebee and enjoyed a delicious steak. He enjoyed his server and wanted to give an extra special tip. Usually josh
Sonbull [250]

Answer:

Josh's total bill is $ 27.825

Step-by-step explanation:

Given:

The subtotal of the Josh Bill =   $21.00

<u>Finding the usual amount Josh gave as Tip To his sever:</u>

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<u>Finding the amount Josh gave 25%</u><u> </u><u>as Tip To his sever:</u>

But now he tips 25% which is

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=> \frac{25}{100} \times 21

=> 0.25 \times 21

=> 5.25

Thus the tip amount will be $5.25

So he will be giving (5.25 - 4.2) = $1.05 more than the usual tip

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The total bill  = subtotal+ 7.5% sales tax +  25% tip

=> 21 + 7.5 % of 21 + 25% of 21

=> 21 + \frac{75}{100} \times 21 +  \frac{25}{100} \times 21

=>21 +0.075 \times 21 +  0.25 \times 21

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3 years ago
Solve. Find all solutions in [0,2).5 secx cotx+5 secx+ cotx+1=0
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