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3 years ago

PLEASE THIS IS DUE AT MIDNIGHT LOL:

Mathematics

2 answers:

Bingel [31]3 years ago

7 0

Answer:

186.55 mph

Step-by-step explanation:

Let the speed of the plane be s

The speed of the plane in the same direction is

s + 12

The speed of the plane against wind is

s - 12

Time = distance/speed

455/(s + 12) = 400/(s - 12)

Solving for s

400(s + 12) = 455(s - 12)
400s + 400*12 = 455s - 455*12
455s - 400s = (400 + 455)*12
55s = 10260
s = 10260/55
s = 186.55 mph

Free_Kalibri [48]3 years ago

4 0

if a plane flies 455 miles with wind, and takes 400 against the wind, and the wind is blowing at a speed of 12mph, then the plane can fly 2455 miles if it's still in the air

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Tresset [83]

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What value of cc will complete the square below and make the expression a perfect square trinomial?

Sav [38]

Question: What value of c will complete the square below ( $x^{2} +30x+c$ ) and make the expression a perfect square trinomial?

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Step-by-step explanation:

Perfect square trinomials come in the form a² + 2ab + b², which is equal to (a + b)². In the presented trinomial, we can immediately identify that a = x, and b² = c, but we need to find the numerical value of $c$ .

To do this, note that the middle term, or 2ab, corresponds with (is equal to) 30x. We know that a = x, and thus, 2ab = 2bx. Now, 2bx and 30x are corresponding terms; thus, 2bx = 30x.

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1 year ago

A scale drawing of a school bus has a scale of 1/2 inch to 5feet. If the length of the school bus is 4 1/2 inches on the scale d

Sedaia [141]

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Scale drawn:

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Meaning that if the drawing scale is 0.5 inch then the actual bus would be 5ft.

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Step-by-step explanation:

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