Answer:
Step-by-step explanation:
Given: sin x + cos x
To change the given trigonometry expression in term of sine only.
Trigonometry identity:-
Expression: 
We get rid of cos x from expression and write as sine form.
Expression: 
Hence, The final expression is only sine function.
Answer:
x = 20
Step-by-step explanation:
7x° + (x + 20)° = 180° (linear pair)
Solve for x
7x + x + 20 = 180
Add like terms
8x + 20 = 180
8x + 20 - 20 = 180 - 20
8x = 160
8x/8 = 160/8
x = 20
Answer:
r=C2
Step-by-step explanation:
C=2r is the equation to find circumference
She needs to work backwards in this case, so:
r=C2
r=The circumference she knows x 2 x 3.14(or 3.14159265359)
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<h3><u><em>I would recommend writing/typing all of this(Especially if you need to show you work)!</em></u></h3>
<em><u>I hope this helped!</u></em>
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<h3>
Answer: 1.28544 x 10^5 (ten to the 5th power)</h3>
Step-by-step explanation:
4 x 103 = 412, 3 x 104= 312
412 x 312 = 128,544
number has to be between one and ten and show significant digits. the decimal has to be moved five tome to the left creating the number 1.28544. to move the decimal back you have to multiply by 10 to the 5th power. Yielding 1.28544 x 10^5
