Answer:
<u>Step-by-step explanation:</u>
Given: cos x = , x is in Quadrant 4
Use Pythagorean Theorem to find sin x:
8² + y² = 17²
y² = 17² - 8²
y² = 289 - 64
y² = 225
y = 15
→ sin x =
Use the double angle formula to find cos (2x):
Divide Whole Numbers and Unit Fractions Which is the quotient of 1/4 ÷ 4 ? Use a number line to help. A number line shows zero,
2 answers:
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solving equation in terms of x we get
solving equation in terms of y we get
Step-by-step explanation:
We need to solve the equation:
Solving the equation:
Simplifying and finding value of x:
We can simplify and find value of y as well:
So, solving equation in terms of x we get
solving equation in terms of y we get
Keywords: Solving Equations
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Answer:
Step-by-step explanation:
The above question is in the form of an exponential decay. The equation for an exponential decay is given by:
where y and x are variables, b < 1, a is the initial value of y (that is the value of y when x = 0).
Let y represent the number of trees left and x represent the number of months. Given that there is currently 2.5 billion trees, therefore a = 2.5 * 10⁹, b = 0.5% = 0.005. The equations becomes: