The ramp is simply a right triangle when viewed from the side. The rise is the height of the triangle and the run is the length or base. The slope of the ramp is the angle that the ramp makes with the ground. Plug those values into the formula for tanФ = opposite/adjacent or rise/run and solve for Ф. You should end up with 0.23
Answer:
The length of BC = 3 units
The length of AD length = 7 units
The Height = 3 units
The Area = 15 square units
Step-by-step explanation:
The length of base BC is <u>3 </u>units, the length of base AD is <u>7 </u>units.
The height of trapezoid <em>ABCD</em> is <u>3 </u> units.
The area of trapezoid <em>ABCD</em> is <u>15 </u> square units.
Answer:
3. 1/28
4. About 7.11%
Step-by-step explanation:
3.
Since two of the eight ads are by a local retailer, the probability of picking either one once is 2/8=1/4. However, the second time, since on of the ads has already been used and there are a total of 7 left, the new probability is 1/7. Multiplying these two together, you get 1/4*1/7=1/28.
4.
To find the probability, you need to find the area of the smaller triangle and the rest. The formula for the area of an equilateral triangle is , meaning that the area of the big triangle is and the area of the little triangle is . . Hope this helps!
Step-by-step explanation:
Let find the distance of the diameter. using distance formula.
The diameter is sqr root of 8 units.
A circle equation is
where r is the radius. The radius is half the diameter so
So our radius is 2.
Now we need to find the midpoint or Center of the diameter.
So the center of the circle is (-4,1). So our equation of the Circle us