I Need Help on this Math Problem!

Mathematics

1 answer:

maw [93]3 years ago

7 0

Step-by-step explanation:

1. vertically opposite angles are the same

b = 42

360 - (42 + 42)

360 - 84 = 276

276 ÷ 2 = 138

c = 138

2. angles in a triangle sum to 180

right angles = 90

180 - (90 + 62)

180 - 152 = 28

angle S = 28

3. 1st question no, unless one angle is given a number. angles are the same vertically opposite so the other 2 angles are also vertically opposite but angle is different size but by adding the 2 different angles, make them supplementary as they sum to 180. 2nd question yes. you could have 4 right angles.

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A particle moves in the xy plane starting from time = 0 second and position (1m, 2m) with a velocity of v>=2i-4tj^

guapka [62]

Given :

A particle moves in the xy plane starting from time = 0 second and position (1m, 2m) with a velocity of v=2i-4tj .

To Find :

A. The vector position of the particle at any time t .

B. The acceleration of the particle at any time t .

Solution :

A )

Position of vector v is given by :

$d=\int\limits {v} \, dt\\\\d=\int\limits {(2i-4tj)} \, dt \\\\d=(2t)i+\dfrac{4t^2}{2}j\\\\d=(2t)i+(2t^2)j$