Find the angle between vector u= 3i + sqrt 3j and vector v=-2i-5j to the nearest degree a) 82 degrees b) 38 degrees c) 142 degrees d) 98 degrees

The angle between u and v is 142°

C is correct

Step-by-step explanation:

Given:

We need to find the angle between u and v vector.

Using dot product.

where,

Nearest degree

Hence, The angle between u and v is 142°

the third picture

step-by-step explanation:

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.