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3 years ago

(3x^2 + 4x -7) - (x^2 - 2x + 6)

Mathematics

1 answer:

marshall27 [118]3 years ago

8 0

(9x^2 +4x -7) - x^2 +2x - 6
8x^2 +6x - 13.

Get a grip on your life son. This is really simple.

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Please help!!! A plane takes off from the airport and climbs at a steady rate. If the plane travelled

vaieri [72.5K]

Answer:

$12.0^\circ$

Step-by-step explanation:

Think of a right triangle. It may help you to draw it.

Start at a point. Draw a point and label it point A. That is where the plane takes off from. Now draw a diagonal segment tilted up to the right and stop at a point and label it B. Segment AB is the path of the airplane. Now draw a segment down vertically to a point you will label C, so that points A and C are on the same horizontal line. Connect points A and C.

You now have a right triangle. Angle C is the right angle. AB is the hypotenuse and is 5.4 km. That is the actual distance the plane traveled. BC is 1.12 km (since 1120 m = 1.12 km) and is a leg of the right triangle. The angle you are looking for is angle A.

For angle A, BC is the opposite leg. AB is the hypotenuse.

The trig ratio that relates the opposite leg to the hypotenuse is the sine.

$\sin A = \dfrac{opp}{hyp}$

$\sin A = \dfrac{1.12~km}{5.4~km}$

$\sin A = 0.2074$

$A = \sin^{-1} 0.2074$

$A = 12.0^\circ$

Answer: 12.0 degrees

5 0

3 years ago

State the point on the line y - 18 = 71.3(x +98)

krek1111 [17]

9514 1404 393

Answer:

(-98, 18)

Step-by-step explanation:

We recognize the equation as being in the "point-slope" form.

y -k = m(x -h) . . . . . . . a line with slope m through point (h, k)

Comparing this form to the given equation, we identify the parameters as ...

k = 18, m = 71.3, h = -98

The point on this line is (h, k) = (-98, 18).

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3 years ago

Suki has a 9 foot by 12 foot foot oriental rug. She is making a scale drawing of the rug that is 1 foot long. How many inches wi

Irina-Kira [14]

The width is 108 inches.

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3 years ago

What makes apparent magnitude different from absolute brightness? Give an example in your response.

Lapatulllka [165]

Apparent magnitude isn’t the actual brightness, it’s what the brightness appears to be from earth, absolute brightness is the actual brightness an example is our sun it appears bright on earth but in space it is so much more brighter

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3 years ago

-6,-5 and -4,-4 what is the slope intercept form

slava [35]

The slope intercept form is -9,-4

I hoped this helped :)

6 0

4 years ago