Find the x- and y-components of the vector d⃗ = (3.0 km , 30 ∘ left of +y-axis). express your answer using two significant figures. enter the x and y components of the vector separated by a comma.

The vector is v = (-15km, 25.98km)

Step-by-step explanation:

We have that the vector has a magnitude of 30 km, and is 30° to the left (counterclockwise) of the positive y-axis

So we can draw a triangle rectangle, where the hypotenuse of the triangle is our vector, the adjacent cathetus to the angle of 30° will be the y-component, ad the opposite cathetus will be the x component (in this case the x component will be a negative component, because the vector points to the left of the y-axis, this is the negative side of the x-axis)

so we have that the y-component will be:

Vy = 30km*cos(30°) = 25.98km

The x-component will be

Vx = -30km*sin(30°) = -15km

Then, if the vector is written in the form v = (x, y)

our vector is: v = (-15km, 25.98km)

step-by-step explanation:

sry but any answer choices

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls