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lina2011 [118]
3 years ago
15

(7 + 3i ) - (2 + 3i ) =

Mathematics
1 answer:
Liula [17]3 years ago
4 0
<span>7+3i−2−3<span>i
7-2+3i-3i
5+3i-3i
5+0
5 Final Answer
</span></span>
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3 years ago
What is the area of this trapezoid
balandron [24]

Answer:

640.5 cm^2

Step-by-step explanation:

So the formula for trapezoid is height times the average of the bases. So 25+36=61, and then we divide that by 2 to get 30.5 as our average. Then, we take 30.5 and multiply it by 21 and we get 640.5.

6 0
3 years ago
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Solve for x<br> a 2.2<br> b 5.4<br> c 6.5<br> d 7.2
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Step-by-step explanation:

Given that the segment is an angle bisector then the ratio of sides and base are equal, that is

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3 years ago
Two small fires are spotted by a ranger from a fire tower 60 feet above ground. The angles of depressions re 11.6° and 9.4°. How
Hitman42 [59]
<span>The two fires are about 70 feet from each other. The assumption is that the ground is relatively level and that a right triangle will be made with the three points of the triangle being the ranger, the spot on the ground directly beneath the ranger, and the fire itself. So the distance to the first fire will be: Calculate the angle. That will be 90° - 11.6° = 78.4° The distance will be tan(78.4) = X/60 60 tan(78.4) = X 60 * 4.871620136 = X 292.2972082 = X And that's how far the 1st fire is from the ranger's station. Now for the 2nd angle = 90° - 9.4° = 80.6° 60 tan(80.6) = X 60 * 6.040510327 = X 362.4306196 = X And the distance between the two fires will be the difference in distance from the tower, so 362.4306196 - 292.2972082 = 70.13341146 Rounding to 2 significant figures gives 70 feet.</span>
4 0
3 years ago
Slove -4(x+1)-3=(x-4)
Nastasia [14]

Answer:

x=-\frac{3}{5}

Step-by-step explanation:

-4(x+1)-3=(x-4) \\ \\ -4x-4-3=x-4 \\ \\ -4x-7=x-4 \\ \\ -7=5x-4 \\ \\ 5x=-3 \\ \\ x=-\frac{3}{5}

6 0
3 years ago
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