Discount: 0,15 * 25 = 3,75$
Price after discount: 25 - 3,75 = 21,25$
The game will cost less than 22$, which is Jade’s budget for a board game.
Considering the angle a by cosine rule
11^2 =7 ^2 +15^2 - 2(7)(15)cos(a)
When you do the maths,
Cos(a) =153/210 =0.729
a= cos inverse of 0.729
a=43 degrees
Considering angle b
7^2=15^2 +11^2 -2(11)(15) cos(b)
This will result in cos(b) =297/330=0.9
b= cos inverse of 0.9 = 25.8 degrees
Considering angle c
15^2=7^2 +11^2 - 2(11)(7) cos(c)
Cos(c) will be = -55/154 = -0.357
c= cos inverse of -0.357=110.9
Comparing the angles a,b and c,
C is the largest size in the triangle with an angle of 110.9 degrees
Am I right please ??
5 to the 2nd power is 25, and 3 to the 2nd power is -9, so 16 is your answer.
5/8 of the cast doesn't sing. To get this answer, you must do 8/8 - 3/8. This would give you 5/8 because 8-3 equals 5 and the denominators just satay the same.
Remember that cosine is adjacent/hypotenuse. We can plug in the values given for this triangle.
Cos(A) = 5/13.
Don’t use a decimal answer as rounding would be necessary, and therefore you wouldn’t be giving an exact value. Leave your answer as 5/13.
