Aborder for a decorative mirror is made with 20 triangular tiles. each tile has a base of 0.5 cm and a height of 3 cm. what is the
total area of the border?
o
0.75 cm?
1.5 cm?
15 cm
30 cm?

15 square cm

Step-by-step explanation:

Area of triangle A = 1/2 × b× h

b = 0.5cm and h = 3cm

: A = 1/2 × 0.5 × 3

So for 20 triangle tiles

Total area = 1/2 × 0.5 × 3 × 20

= 15 square cm

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

pretty sure 750 each month!

step-by-step explanation: