Answer:
x = 2, P = 22 cm, A = 21 cm²
Step-by-step explanation:
The 2 legs of the triangle are congruent , then
6x - 4 = 8 ( add 4 to both sides )
6x = 12 ( divide both sides by 6 )
x = 2
perimeter = 8 + 8 + 6 = 22 cm
Area = bh ( b is the base and h the perpendicular height )
Here b = 6 and h = 7 , then
A = × 6 × 7 = 3 × 7 = 21 cm²
Matt paid $70 for mp3 player.
Step-by-step explanation:
Given,
Cost of mp3 player = $149.99
Discount = 20%
Amount of discount = 20% of 149.99
Amount of discount =
Amount of discount = 0.2*149.99
Amount of discount = $29.99
Sale price = Cost of mp3 - Amount of discount
Sale price =
Rebate = $50
Amount paid by Matt = sale price - rebate
Amount paid by Matt = 120-50 =$70
Matt paid $70 for mp3 player.
Keywords: subtraction, percentage
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