15 points, plz

what is the area of a triangle whose vertices are d(3, 3), e(3, −1), and f(−2, −5)?

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²

use the formula = 1/2b x h

The answer to your question is 10 units ²

Step-by-step explanation:

To solve this problem I will use the formula

                 3    3

A  =   1/2    3    -1        = 1/2  [  (3 x -1) + (3 x -5) + (-2 x 3) - (3 x -5) - (-2 x -1)

                -2   -5                     -(3 x 3)]

                 3    3        = 1/2 [ -3 - 15 - 6 + 15 - 2 - 9]

                                 = 1/2 [ -20]

                                 = 1/2|20|

                                 = 10 units²

Sorry, I don't remember how to use the formula 1/2 b x h

triangle abc is reflected on the line x=-6.5 then reflected again on the x axis

step-by-step explanation:

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500