Answer: 13.8 m
Step-by-step explanation:
Given
From point A, angle of elevation is 
From point B which is 18 m closer, it changes to 
Suppose the height of tree is h
From figure, we can write
Similarly
Deduce the value of h
Thus, the height of the tree is 13.8 m
Answer:
2x - 7y = -34.
Step-by-step explanation:
As the line we want is perpendicular to y= -7/2 x + 9 it's slope will be
-1 /(-7/2) = 2/7.
Now we find the point of intersection ofn the 2 given lines:
x + y = 10
3x - 4y = -12
Multiply the first equation by -3:
-3x - 3y = -30
Now add this last equation to the second one:
-7y = -42
y = 6
Plug y = 6 into the first equation:
x + 6 = 10
x = 4.
So the point of intersection is (4, 6) and the equation we want passes through this, so using the point-slope form of straight line we have:
y - 6 = 2/7(x - 4)
7y - 42 = 2(x - 4)
7y - 42 = 2x - 8
2x - 7y = -42 + 8
2x - 7y = -34
Answer:
5c+4=2(c-5)
opening the parentheses we get:
5c+4=2c-10
putting like terms together we get
5c-2c=-10-4
3c=-14
c=-14/3
so the answer would be A. C = - 4 2/3
Answer:
Whenever finding a rule, figure out what x+1 relates to in terms of y (aka the slope). Also, figure out the y-intercept (0,<em>y</em>)
<u>Example:</u>
x+1 = y+2.
Slope: 2 ÷ 1 = 2.
The y-intercept is (0,9)
This would make the rule y=2x+9
