Answer:
x = - 10
Step-by-step explanation:
Average is calculated as
average = 
, thus
= 3
Multiply both sides by 3 to clear the fraction
19 + x = 9 ( subtract 19 from both sides )
x = - 10
-19
because 19 is the opposite of -19 as you might have learnt in opposite number
Answer:
area = 160 cm²
Step-by-step explanation:
area = (8x 4 x 4) + (4 x 4 x 2) = 160 cm²
2nd one
5th one
are both correct
Answer:
85.1 ft
Step-by-step explanation:
The extreme water slide forms a 20 angle with the tower it leans against 80 feet above the ground find the length of the slide x
We solve using the Trigonometric function of Cosine
cos y = adjacent/hypotenuse
y = angle = 20°
Adjacent = 80 ft
Hypotenuse = ?
cos 20 = 80/Hypotenuse
Hypotenuse = 80/cos 20
x = 85.134221798 ft
Approximately = 85.1 ft
Length of the slide = 85.1 ft
