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goldfiish [28.3K]
3 years ago
14

1/2(3x -2/3y) + 3(x/2 + 1/2y)

Mathematics
1 answer:
blsea [12.9K]3 years ago
4 0

Simplify the expression.

18x + 7y/6

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Two planes are the same altitude. From the airport , one plane is 50 km away in the direction of N°60 E and another is 80 km awa
djverab [1.8K]

9514 1404 393

Answer:

  78.5 km

Step-by-step explanation:

Measured at the airport, the angle between the two planes is ...

  180° -60° -50° = 70°

The law of cosines tells us the distance between the planes is ...

  d = √(50² +80² -2·50·80·cos(70°)) ≈ √6163.84 ≈ 78.5 . . . km

The planes are about 78.5 km apart.

6 0
2 years ago
State the hypotenuse, opposite and
UkoKoshka [18]

Answer:

hypotenuse:2 (AB)

adjacent side: 1 (AD)

opposite side:√3(BD)

Step-by-step explanation:

-->AB is hypotenuse cuz it's opposite to right angle (90°)

-->AD is adjacent,cuz it's adjacent to reference angle(60°)

-->BD is opposite side,cuz it's opposite to the reference angle(60°)

✌️:)

4 0
3 years ago
Evan saves $2 for every $5 he earns mowing lawns. How much will Evan have saved when he has earned $150?
Lesechka [4]

Answer:

he will have saved 45$

Step-by-step explanation:

if you take 2 from every 5 and 5 x 15 = 150, you would do 2 x 15 and get 30. So, the answer is 30$

6 0
3 years ago
Read 2 more answers
15. Find the lengths of major and minor arcs AB correct to the tenth of a cm. The minor
oee [108]

Las funciones trigonométricas se utilizan fundamentalmente en la solución de triángulos

rectángulos, recordando que todo triángulo rectángulo tiene un ángulo de 90° y sus ángulos

interiores suman 180°. La notación que se acostumbra es la siguiente.

5 0
3 years ago
Please help, i will mark brainliest
larisa86 [58]

Answer:

1. 1,000

2. 395

Step-by-step explanation:

Hope it helps lol

3 0
2 years ago
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