Prove the identity
2sin^2x - 1 = sin^2x - cos^2x
Answers
sin² x-cos² x=sin² x-(1-sin² x)=2sin² x-1
==============================
Making
On evaluating the left hand side and replacing
2(1-
This gives
=2-2
=1-2
From the identity in
=
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How do I go about solving this?
antoine went on vacation to las vegas. his room cost 115.62 each night. his flight there cost $45.70 and his flight. was32.49. he averaged $15.00 per day on food. on the first dat antoine won$75.00 and on the last day he lost $25. if he stayed for 3 nights and 4 days, how much did the entire trip ( including airfare, food , hotel and wining ) cost him ?
(7x^2 - x - 2) - ( -6x^3 + 3) A. 6x^3 + 7x^2 - x - 5 B. -6x^3 + 7x^2 - x + 1 C. -x^3 - x - 5 D. x^2 - x + 1
Write the equation y= 5x-11 in standard form
THE QUESTIONS IS ON THE FILE!
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Answers
Answer:
__ - 8=81
unsure if we're adding his friend but for this i assume no,
81+ 8 = 89
so its either 89 or
89+13=102
Answers
The required inequality for Silvio to earn more than $158 in one day is, $50 + 12x ≥ 158.
Given that,
Silvio works at a car wash. He earns $50 per day and $12 per car washed. Silvio wants to earn at least $158 in 1 day.
To determine the inequality represents the number of cars (C) Silvio must wash to reach his goal.
What is inequality?
Inequality can be defined as the relation of the equation containing the symbol of ( ≤, ≥, <, >) instead of the equal sign in an equation.
Here,
Let the number of cars washed by Silvio be x,
According to the question,
Silvio works at a car wash. He earns $50 per day and $12 per car washed.
Total earning of the day = $50 + 12x
Silvio wants to earn at least $158 in 1 day. So, his total earnings of the day must be greater equal to $158.
$50 + 12x ≥ 158.
Thus, the required inequality for Silvio to earn more than $158 in one day is, $50 + 12x ≥ 158.
Learn more about inequality here:
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Answer:
50+12x≥158
Step-by-step explanation:
starting with $50, adding $12 for every car washed (x), must be at least, but can be greater than, $158.
Answers
Answer:11.25 square feet of each carpet will be needed for the bedroom.
Step-by-step explanation:
The formula for determining the area of a square is expressed as
Area = length^2
Marco's bedroom is a square that one side is 7 1/2 feet. Converting
7 1/2 feet to improper fraction, it becomes 15/2 feet.
Therefore, the area of Marco's bedroom would be
(15/2)^2 = 225/4 = 56.25 square feet.
Marco wants to come in at five carpet. It means that the number of square feet of each carpet that will be needed for the bedroom is
56.25/5 = 11.25
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Answer:
1\4
Step-by-step explanation:
Assuming 0 and 1 are arithmetic (elementary branch of mathematics)
a) 5
b) -1
c) 6
d) 2
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Answer:
a) 5
Step-by-step explanation:
x+2 = 2x-3
-x -x
2 = x-3
+3 +3
5 = x