Answer:
It's Option A.
Step-by-step explanation:
Using the Cosine Rule:
cos < K = (3.9^2 - 1.9^2 - 2.8^2) / (-2 *1.9*2.8)
= 3.76 / -10.64
= - 0.3534.
m < K = 110.7 degrees.
Using the Sine Rule:
3.9 / sin 110.7 = 2.8 / sin <J
sin J = 2.8 sin 110.7/ 3.9 = 0.6716
m < J = 42.2 degrees
So m < L = 180 - (110.7 + 42.2)
= 180 - 152.9
= 27.1 degrees
You would first subtract 3a^4 from 8a^4
8a^4-3a^4=5a^4, since you can subtract numbers that are like terms.
Same with 5d and 3d
5d-3d=2d
Then you would put the answers together.
5a^4+2d
So the answer is 5a^4+2d
It’s 15/30=x/34
you divide 15/30 gives you 1/2 then you multiply by 34 gives you 17 thats your answer
x= 17
Answer:
l = 14
Step-by-step explanation:
Given
p = 2l + 2w and w = 7, p = 42, substitute values into formula
42 = 2l + (2 × 7), that is
42 = 2l + 14 ( subtract 14 from both sides )
28 = 2l ( divide both sides by 2 )
14 = l or l = 14
