1. in the figure below, abc ~ pqr. if the area of abc is 40 cm2, what is the area of pqr? show your work.

Step-by-step explanation:

The side length AB of triangle ABC corresponds to side length of PQ of triangle PQR.

The scale factor from ABC to PQR is

The area of triangle PQR will change by centimeters square.

Since we know the area of triangle ABC to be , the area of triangle PQR

The area of the triangle PQR is 90 cm^2.

Step-by-step explanation:

We are given two triangles, ABC and PQR, which are similar to each other.

If two triangles are similar, then the ratio of their areas is the square of the ratio of their sides.

Given that area of the triangle ABC is , we are to find the area of the triangle PQR.

Finding the scale factor

So square of this scale factor will be

Area of triangle PQR = = 90cm^2

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

she gotta workk that a 2

step-by-step explanation: