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3 years ago

What is the formula A=1/2(b1 + b2) - h

1 answer:

6 0

Answer: Trapezoid

Explanation:
The formula A=1/2(b1+b2)h can be used to determine the area, a, of a trapezoid with height, h, and base lengths, b1 and b2.

You might be interested in

Factor the polynomial -x3-4x2-5x

viktelen [127]

Factor out common factors.

-x³-4x²-5x = -x(x² + 4x + 5)

-x(x² + 4x + 5) is your answer

hope this helps

3 0

3 years ago

The coach has 3 positions to fill on his basketball team. There are 9 students who are interested in being on the team. How many

Colt1911 [192]

Answer: Option 'c' is correct.

Step-by-step explanation:

Since we have given that

Number of students who are interested in being on the team = 9

Number of positions to fill on his basket ball team = 3

So, the combinations of the three positions he can choose for the team is given by

$3\times 9=27$

Hence, Option 'c' is correct.

8 0

4 years ago

In the diagram m ∠ 3 = x + 30 and m ∠ 4 = 2x - 80. What is the measure of angle 3?

Juli2301 [7.4K]

Answer:

140 degrees

Step-by-step explanation:

Due to ∠3 and ∠4 being vertical angles (they are across from one another) their measures are the same, therefore:

⇒ m∠3=m∠4

and since their measures are given in terms of x to find x just substitute:

⇒ x+30=2x-80 ⇒ x=110

We substitute x in m∠3=x+30 and find that m∠3=140 degrees

7 0

4 years ago

Read 2 more answers

Use the rectangle hexagon with side length 10 meters to fill in the missing information

Vlada [557]

Answer:

$A_h=150\sqrt{3}\ m^2$

Step-by-step explanation:

<u>Regular Hexagon</u>

For the explanation of the answer, please refer to the image below. Let's analyze the triangle shown inside of the hexagon. It's a right triangle with sides x,y, and z.

We know that x is half the length of the side length of the hexagon. Thus

$x=5 m$

Note that this triangle repeats itself 12 times into the shape of the hexagon. The internal angle of the triangle is one-twelfth of the complete rotation angle, i.e.

$\theta=360/12=30^o$

Now we have $\theta$ , the height of the triangle y is easily found by

$\displaystyle tan30^o=\frac{x}{y}$

Solving for y

$\displaystyle y=\frac{x}{tan30^o}=\frac{5}{ \frac{1} {\sqrt{3} }}=5\sqrt{3}$

The value of z can be found by using

$\displaystyle sin30^o=\frac{x}{z}$

$\displaystyle z=\frac{x}{sin30^o}=\frac{5}{\frac{1}{2}}=10$

The area of the triangle is

$\displaystyle A_t=\frac{xy}{2}=\frac{5\cdot 5\sqrt{3}}{2}=\frac{25\sqrt{3}}{2}$

The area of the hexagon is 12 times the area of the triangle, thus

$\displaystyle A_h=12\cdot A_t=12\cdot \frac{25\sqrt{3}}{2}=150\sqrt{3}$

$\boxed{A_h=150\sqrt{3}\ m^2}$

6 0

4 years ago

Match the system of equations on the left with the appropriate solution on the right.

krok68 [10]

Answer:

Step-by-step explanation:

it's really long to write it this web page could help understand system of equations. "https://study.com/academy/lesson/types-of-systems-of-equations.html"

the answers are :1-3 , 2-5. 3-4. 4-5 .

4 0

3 years ago