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AfilCa [17]
3 years ago
9

1) What are the solutions of the equation? x^2 – 3x = 28? Asap please . 30 points

Mathematics
2 answers:
Sedbober [7]3 years ago
7 0
2-3x=28
-3x=28-2
-3x=26
X=-26/3
sammy [17]3 years ago
4 0

Answer:

Step-by-step explanation:

x²-3x-28=0

x²-7x+4x-28=0

x(x-7)+4(x-7)=0

(x-7)(x+4)=0

x=7,-4

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One of the sides of an equilateral triangle is 32. What is the height of the triangle? Round to 2 decimal places.
Ilya [14]
So because it's an equilateral triangle, you can cut the triangle in half and make a right triangle with a hypotenuse of 32. The bottom of the triangle would be half of 32, which is 16, because you cut the triangle in half. Now you can use the pythagorean theorem to solve for the height.

16^{2} +b^{2} =32^{2}

The answer is whatever b is:

b = \sqrt{ 32^{2} - 16^{2}

So your answer is 27.713.
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3 years ago
Trevor bought 3 shirts that all cost the same amount. He also bought a jacket for $47.15. With the given information in the torn
KengaRu [80]

Answer: See explanation

Step-by-step explanation:

Your question isn't complete but let me help out. The value of each shirt will be gotten by subtracting $47.15 from the total amount paid for the shirt and jacket. Let's say the total amount paid is $90.02

Since the jacket cost $47.15, the cost of the shirts will be:

= $90.02 - $47.15

= $42.87

We would now divide the coat if the three shirts by 3. This will be:

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6 0
3 years ago
2 pyramids have a volume of 8 and the larger volume is 343<br> what is the scale factor
Mice21 [21]

Answer

i think its 42.875

step-by-step explanation:

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7 0
3 years ago
Find the difference in simplest form. <br> 2b/b^2-2b+1 - 2/b^2-2b+1
kolezko [41]
1) factor the denominators: 2b/(b-1)2 - 2/ (b-1)2
2) MAKE SURE YOU HAVE A COMMON DENOMINATOR
3) combine the numerators: 2b-2/(b-1)2
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An airplane pilot over the Pacific sights an atoll at an angle of depression of 10°. At this time, the horizontal distance from
Alex17521 [72]
The question was posted incomplete.

This is the part missing:

<span>What is the height of the plane to the nearest meter?

Answer:  559 m.

Explanation:

1) The horizontal distance between the plane and tha atoll makes a right triangle with the height, with the depression angle between the two legs.

2) Therefore, you can use the tangent trigonometric ratio:

tan(10°) = opposite-leg / adyacent-leg = height / horizontal distance

⇒ height = horizontal distance × tan (10°)

⇒ height = 3,172 m × tan(10°) = 559.31 m, which rounded to the nearest m is 559
</span>
6 0
3 years ago
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