Here is your word problem →
A boy had $1.02 with him , his friend Chucky gave him some amount of money and now he has $13.48 . How much money did Chucky gave to that boy.
Solution →
Let the money given by Chucky be c.
Therefore , According to question →
c + 1.02 = 13.48
or, c = 13.48 - 1.02
or, c = 12.46
Answer → Chucky gave him $12.46
____________________________________
Step-by-step explanation:
w(2w - 30) = 5400
2w²- 30w = 5400
2w² - 30w - 5400 = 0
(w - 60 ) ( w + 45 ) = 0
w= 60 w= - 45
only take the positive value
therefore w = 60
Answer:
See proof below
Step-by-step explanation:
show that
sinx/1+cosx=tanx/2
From LHS
sinx/1+cosx
According to half angle
sinx = 2sinx/2 cosx/2
cosx = cos²x/2 - sin²x/2
cosx = cos²x/2 - (1- cos²x/2)
cosx = 2cos²x/2 - 1
cos x + 1 = 2cos²x/2
Substitute into the expression;
sinx/1+cosx
= (2sinx/2 cosx/2)/2cos²x/2
= sinx.2/cos x/2
Since tan x = sinx/cosx
Hence sinx/2/cos x/2 = tan x/2 (RHS)
This shows that sinx/1+cosx=tanx/2
Answer:
I believe it's C. Wingspan is a continuous quantitative variable.
