Trigonometric Formula's:


Given to verify the following:













Hence, verified the trigonometric identity.
This is the steps for equation solving for the value of x,
x/3-7 = 11
now 7 goes to the other side of equation by changing the sign from - to +,
x/3 = 11 + 7
x/3 = 18
now when we multiply both sides of equation with 3 or 3 goes to the other side of equation and multiply with 18 leaving x alone here for finding the value of x,
and we get, x = 54
at the end of equation we get x = 54, if the equation was in the form 3x - 7 = 11, then we will get x = 6
For Question Number one
(2+10)²+4=148
Question Number two:
(6+5)×(8-6)=22
Answer:
The total salary for the week
y = 0.1x + $75
Step-by-step explanation:
Let "x" be the total sales in the week.
Sondra gets $75 a week, plus 10% of "x"
Let "y" the total salary.
So the total salary for the week y = 10% of x + $75
y = 0.1x + $75
Answer:

Option D is the correct option
Step-by-step explanation:

⇒
{ w ÷ 1 = w , So, I wrote 8 × w }
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Apply cross product property
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Move 15w to left hand side and change it's sign
Similarly, Move 35 to right hand side and change it's sign
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Collect like terms
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Divide both sides of the equation by -7
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Calculate
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Hope I helped!
Best regards!!