If the area decreases by 8.5%, that leaves 100-8.5, or 91.5% of the forest remaining. So, at the end of 15 years, you have:
(.915)^15=.2638, or 26.38% of the forest left.
.2638 x 4200=1108 km² of the forest remains
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Answer:
343
Step-by-step explanation:
7 * 7 * 7
7 * 7 = 49
49 * 7 = 343
Answer:
Step-by-step explanation:
Given information: The perpendicular bisector of side AB of ∆ABC intersects the extension of side AC at D, m∠CBD = 16° and m∠ACB = 118°.
Let the measure of ∠ABC is x°.
In triangle ABD, DM is perpendicular bisector of AB.
In triangle ADM and BDM,
(Definition of perpendicular bisector)
(Definition of perpendicular bisector)
(Reflection property)
By SAS postulate,
(CPCTC)
According to angle sum property of a triangle, the sum of interior angles of triangle is 180°.
In triangle ABC
Subtract 134 from both sides.
Divide both sides by 2.
Therefore, the measure of ∠ABC is 23°.
You would plug in 40 for x making the equation 12.5(40) and the answer would be $500
Answer:
The signup fee is $17
Step-by-step explanation:
we know that
The equation in point slope form is equal to
where
m is the slope or unit rate of the linear equation
(x1,y1) is a ordered pair of the line
Let
x -----> the number of months
y -----> the total cost of a gym membership
In this problem we have
The slope of unit rate is equal to
The ordered pair is
substitute
----> equation in point slope form
Convert to slope intercept form
---> equation in slope intercept form
The y-intercept is the signup fee (value of y when the value of x is equal to zero)
therefore
The signup fee is $17