Answer:
90 feet
Step-by-step explanation:
you take the length times the height to get the area
Step-by-step explanation:
1 week = 7 days
given 7 days = 14 hours of practice
and let x be the number of hours spent on practicing and y the number of days.
from the above expression we can have the equation,
![y = \frac{x}{2}](https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7Bx%7D%7B2%7D%20)
using the equation when y = 10,
![\frac{x}{2} = 10 \\ x = 2(10) \\ = 20](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B2%7D%20%20%3D%2010%20%5C%5C%20x%20%3D%202%2810%29%20%5C%5C%20%20%3D%2020)
Answer:
2 times 7 is 14 then add 14 so 28
Step-by-step explanation:
hopw this helps
4 sin^2 θ + 13cos^2 θ = 7
sin^2 θ = 1 - cos^ θ
4 - 4cos^2 θ + 13cos^2 θ = 7
9cos^2 θ = 3
cos^2 θ = 1/3
cos θ = # (1/3) # - square root
Square root of (1/3) has +1/3 and -1/3 as values of cos
Find the key angle by doing the cos inverse of #1/3
K.A = cos^-1 #(1/3) = 0.955
θ lies in all 4 quadrants
The values of θ are:
θ = 0.955, 2.186, 4.096, 7.23
Ignore 0.955, 2.186, 4.096, 7.23 as they are out of range pi/2 = 1.571
The the value of θ = 0.955 = 0.96 (to 2 d.p) radian
Hope it helped!
The area of a trapezoid is found using the formula, A = ½ (a + b) h, where 'a' and 'b' are the bases (parallel sides) and 'h' is the height (the perpendicular distance between the bases) of the trapezoid.