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Greeley [361]
4 years ago
11

Evaluate the expression 12 + {-4 + 2[1 + 3(-5 – 3)]} .

Mathematics
1 answer:
max2010maxim [7]4 years ago
8 0

Answer:

-38

Step-by-step explanation:

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Which plane is closer to the base of the airport tower? Explain.
Annette [7]

Answer:

Plane B is closer.

Step-by-step explanation:

Plane B is closer.

The distance for Plane A is 7.9 km.

The distance for Plane B is 7.4 km.

Step-by-step explanation:

To find the distance to the tower, altitude must be converted to kilometers. Each 1000 ft is 0.3048 km, so the heights of the planes are ...

-- Plane A: (20 thousand ft)*(0.3048 km/thousand ft) = 6.096 km

-- Plane B: (8 thousand ft)*(0.3048 km/thousand ft) = 2.4384 km

The Pythagorean theorem can be used to find the distance from each plane to the tower:

-- distance = √((ground distance)² + (height)²)

-- Plane A distance = √(5² +6.096²) ≈ √62.16 ≈ 7.9 . . . km

-- Plane B distance = √(7² +2.4384²) ≈ √54.95 ≈ 7.4 . . . km

The distance for Plane B is shorter, so Plane B is closer to the tower.

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3 years ago
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What is the slope of the line
Gennadij [26K]

Answer:

the answer is 4/-1

Step-by-step explanation:

because m= rise/run

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Convert 5.45787878... to a fraction. Simplify.
kondaur [170]
5.45787878 = 545787878/100000000

divide both numerator and denominator by 2 or any other number

545787878 ÷ 2 = 272893939

100000000 ÷ 2 = 50000000

272893939/50000000 is your answer


3 0
3 years ago
19 photos are taken during school and 24 are taken after school. What fraction of photos were taken after school
yarga [219]
19 + 24= 43

\frac{24}{43}
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3 years ago
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What is the range of the function g (x) = |x-12| - 2?
user100 [1]

Answer:

B.  {y | y ≥ - 2}

Step-by-step explanation:

The minimum value of |y - 12| is 0, so

The minimum value of the function is  - 2

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3 years ago
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