Answer:
The area of a trapezoid is
A = (1/2) h (b1 + b2)
where
h is the height
b1 is length of base 1
b2 is the length of base 2
Step-by-step explanation:
Answer:
its A my guy did it on apex 972.41
Step-by-step explanation:
The ladder, leaning against the building, forms a right triangle with height "a" being the distance from the ground to the window, and hypotenuse "c" being the length of the ladder.
Because it's a right triangle, we can use trigonometric ratios to find the angles we're missing.
For part A), to solve for the angle between the base of the ladder and the ground, you'll want to use sine, because we know the lengths of the opposite side and the hypotenuse.
Sin(x) = a/c , solve for angle x in degrees or radians.
For part B), finding the angle between the top of the ladder and the building, remember that the sum of the angles in a triangle is 180 degrees, or pi radians, depending on which unit your teacher prefers.
Assuming degrees, we can say that angle y = 180-90-x. You are simply subtracting the two known angles to find the third.
For part C) use the Pythagorean theorem. You're looking for the length of the base, "b". Recall:
a^2 + b^2 = c^2
Plug in the known values, and solve for b.
Substitute the values 15, 18, and 31 into the equation.
A(15)= -26
A(18)= -32
A(31)= -58
Isolate the f. Note the equal sign. What you do to one side, you do to the other.
First, subtract 6e from both sides
6e (-6e) - 7f = 8g + h (-6e)
-7f = 8g + h - 6e
Divide -7 from both sides
(-7f)/-7 = (8g + h - 6e)/-7
f = -8/7g + h/-7 + 6/7e
f = -8/7g + h/-7 + 6/7e is your answer
hope this helps
