Answer:
1114 foot
Step-by-step explanation:
Let the engineer is at a distance of x feet from the base of the building.
Please see the attached image.
In the triangle, we have
Solving the equation for x, we get
Thus, the engineer is 1114 foot from the base of the building.
Answer:
PR corresponds to TR
Step-by-step explanation:
<Q and <S are pair of alternate angles [since PQ is parallel to ST]
<Q = <S [since they are alternate angles]
So, PR corresponds to TR [since they are opposite sides of alternate angles and ΔPQR is similar to ΔTSR]
Answer:
PR corresponds to TR.
Step-by-step explanation:
Its the second choice:
PR corresponds to TR.
This is because they are opposite equal angles ( < Q and <S).
Solve for a
3b=10b-49
Solve for b
Answer:
The first answer is a = 10, The second answer is b = 7
Step-by-step explanation:
Equation 1: 5a = a + 40
To solve for a, you want to isolate a on one side of the equation. You can do this by subtracting "a" from both sides of the equation:
5a - a = a - a + 40
This simplifies to:
4a = 40
Now, divide both sides by 4 to solve for a:
4a/4 = 40/4
a = 10
So, a = 10.
Equation 2: 3b = 10b - 49
To solve for b, you want to isolate b on one side of the equation. First, let's get the "b" terms on one side by subtracting 10b from both sides:
3b - 10b = 10b - 10b - 49
This simplifies to:
-7b = -49
Now, divide both sides by -7 to solve for b:
(-7b) / (-7) = (-49) / (-7)
b = 7
So, b = 7.
1. Consider right triangle ABK. In this triangle AB is the hypotenuse, BK and AK are legs. By the Pythagorean theorem,
2. Use the definition of
Then
3. Consider right triangle ABD. In this triangle AD is the hypotenuse, AB and BD are legs. Since then
The leg that is opposite to the angle of 30° is half of the hypotenuse, so
4. The area of parallelogram aBCD is
Answer:
Therefore the car takes 2 s to reach a minimum height from the ground before rising again.
Step-by-step explanation:
Given that a roller coaster ride reach a height of 80 feet.
The height above the ground of the roller coaster is modeled by the function
h(t)=10t²-40t+80
where t is measured in second.
h(t)=10t²-40t+80
Differentiating with respect to t
h'(t)= 10(2t)-40
⇒h'(t)=20t-40
To find the minimum height we set h'(t)=0
∴20t-40=0
⇒20t =40
⇒t=2
The height of the roller coaster minimum when t=2 s.
The minimum height of of the roller coaster is
h(2)= 10(2)²-40.2+80
=40-80+80
=40 feet.
Therefore the car takes 2 s to reach a minimum height from the ground before rising again.
Answer:
2s
Step-by-step explanation:
2
4
5
Answer: 2=b
Step-by-step explanation: