Answer:
a. 49
Step-by-step explanation:
so, basically turn the equation around! -15+64. because -15 is in parentheses, we know that it is negative, but another way you can do it is to take away the addition symbol and just use the negative as a subtraction one. so you could do 64-15 and you get 49. for b it's a little different, two negative cancel each other out so because there's a subtraction sign after 18 and there's a negative sign before 55 you can see that to simplify the equation it would be -18+55 or again 55-18. for c I think that one is pretty simple, just do 92-86 (I don't know if you see the pattern yet but most times you can just flip it around.) and for d you can do 17 plus 44 and then make the solution negative. I hope this helped a little!!
The model car is 1/2 the actual size. To find the size of the wheels, find half of 16.
Answer:
Step-by-step explanation:
Using the point slope equation of a line to solve the question
y-y0=m(x-x0) where (x0,y0) is the point and m is the slope of the unknown line perpendicular to the given line.
Rewriting the equation given in the form y = MX+c
2x+5y+8 = 0
5y = -8-2x
y = -8/5-2x/5
From the equation, m = -2/5
Since the unknown line is perpendicular to the give line, the slope of the given line will be;
M = -1/(-2/5)
M = 5/2
Substituting the point and the slope into the equation above
y-(-6) = 5/2(x-(-3))
y+6 = 5/2(x+3)
y+6 = 5x/2+15/2
2y+12 = 5x+15
2y-5x = 15-12
2y-5x = 3 gives the required equation of the line
We can use trigonometry to solve the problem. First draw a picture of the situation to understand what is going on (See the attached photo).
Next, we can use the tangent function to solve for the height of the building:
Next, rearrange the problem to solve for h:
h = 39.356 ft