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3 years ago

Need help with questions 17 and 18

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

6 0

The answer to 17 is 18.6 and the 6 is repeating

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Which expression represents the area of the figure?

lys-0071 [83]

Answer:

The solution is 8x2 + 16x + 8. The region can be divided into a triangle and a rectangle.

Area of Triangle=

(2x + 2)(2x)

Area of Triangle = 2x2 + 2x

Area of Rectangle: (2x + 2)(3x + 4)

Area of Rectangle: 6x2 + 14x + 8

Sum of Two Regions: 8x2 + 16x + 8

Step-by-step explanation:

4 0

2 years ago

Two airplanes are flying in the air at the same height. Airplane A is flying east at 300mi/h and airplane B is flying north at 2

Ipatiy [6.2K]

Answer:

$\frac{dAB}{dt}=340 mil/h$

Step-by-step explanation:

The change of distance over time of the plain A is 300 mi/hour and 200 mi/hour for plane B. O is the point of the airport.

So, the distance from A to O AO = 90 miles and BO = 120 miles.

Now, we have a right triangle here. We can use the Pythagorean theorem, so the distance between the planes will be:

$AB^{2} =AO^{2}+BO^{2}$ (1)

$AB =\sqrt{AO^{2}+BO^{2}}=$

$AB =\sqrt{90^{2}+120^{2}}=150 miles$

If we take the derivative of the equation (1) we could find the change of the distance between planes.

$2AB\frac{dAB}{dt}=2AO\frac{dAO}{dt}+2BO\frac{dBO}{dt}$

$2*150\frac{dAB}{dt}=2*90*300+2*120*200=102000 mil/h$

$\frac{dAB}{dt}=\frac{102000}{150*2}$

Finally,

$\frac{dAB}{dt}=340 mil/h$

I hope it helps you!

6 0

2 years ago

How do I change 7 into a fraction

max2010maxim [7]

Answer:

You put it over a one to represent seven whole numbers or just 7

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2 years ago

I need help I’ll give brainlist answer.

vodomira [7]

Answer:

All beside D

Step-by-step explanation:

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2 years ago

given statement: if a shape is a rohmbus, then the diagonals are perpendicular. a square is a rohmbus. what is a logical conclus

harkovskaia [24]

Answer:

The diagonals of a square are perpendicular.

Step-by-step explanation:

6 0

1 year ago