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A baseball is thrown with one quarter rotation that takes 1.35 seconds. What is the angular velocity in units of radians per second?

Step-by-step explanation:

Angular speed is given by , where is angle change in radians and is elapsed time.

Since the baseball makes one fourth (one quarter) of a rotation in 1.35 seconds, it will take the baseball seconds to complete on rotation.

One rotation is 360 degrees or radians. Therefore, the angular speed of the baseball is:

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.