Answer:
area = 396 ft²
Step-by-step explanation:
area = (12 x 19) +(19 x 6) + (9 x 6) = 396 ft²
The answer would be
#pi/2; (7pi)/6 and (11pi)/6#
Explanation ?
Call sin x = t.
#2t^2 - t - 1 = 0.#
Since a + b + c = 0. use shortcut. 2 real roots: t = 1 and #t = c/a = -1/2#
sin x = t = 1 --> #x = pi/2#
sin x = t = -1/2 --> #x = (7pi)/6# and #x = (11pi)/6#
Within interval #(0, 2pi)#: 3 answers: #pi/2; (7pi)/6 , and (11pi)/6.#
-------------------------------------------------------------------------------------------
Hope you find this helpful !
The answer is true since the triangles are similar on all lengths and angles
Answer:
Age of the spear head = 6349 years.
Step-by-step explanation:
Expression to be used to calculate the age of the spear head,
Here, 
= Final amount of C-14
= Initial amount
= 0.0001
= Time in years
If = 53% of = 
years
≈ 
years
Therefore, age of the spear head = 6349 years.
Let x be the missing number
7/8 = x/48
Cross- multiply
7/8= x/48
(7)*(48) = x*8
336 = 8x
Flip the equation
8x = 336
Divide both sides by 8
8x/8 = 336/8
x= 42
Check my answer
First , replace x by 42
7/8 = 42/48
0.875 = 0.875
I hope that's really help !
