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2 years ago

How any shapes s in a pentagon

Mathematics

1 answer:

Vlad [161]2 years ago

8 0

There are 5 sides on a pentagon. penta=5 sides

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Help asap please!! thank you

Pavlova-9 [17]

Answer: The third option

Step-by-step explanation:

(6) (5) is the area of the quadrilateral, therefore you subtract that value by the area of the semi-circle.

to find the area of a semi circle the formula is: (1/2) π ( $r^{2}$ )

The radius is 2.5 because the diameter is 5, and the radius is half the diameter.

6 0

2 years ago

After a baseball is hit, the height h (in feet) of the ball above the ground t seconds after it is hit can be approximated by th

lubasha [3.4K]

Answer:

The ball will take 4.05 seconds to hit the ground.

Step-by-step explanation:

we have

$h=-16t^{2}+64t+3$

This is a quadratic equation (vertical parabola) open down

The vertex is a maximum

we know that

The ball hit the ground when h=0

Solve the quadratic equation

For h=0

$-16t^{2}+64t+3=0$

The formula to solve a quadratic equation of the form

$at^{2} +bt+c=0$ is equal to

$t=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^{2}+64t+3=0$

$a=-16\\b=64\\c=3$

substitute in the formula

$t=\frac{-64(+/-)\sqrt{64^{2}-4(-16)(3)}} {2(-16)}$

$t=\frac{-64(+/-)\sqrt{4,288}} {-32}$

$t=\frac{64(-)\sqrt{4,288}} {32}=-0.05\ sec$ ---> the time cannot be a negative number

$t=\frac{64(+)\sqrt{4,288}} {32}=4.05\ sec$

therefore

The ball will take 4.05 seconds to hit the ground.

4 0

2 years ago

Cam wants to find 509-106. Which steps can he use to find the difference

attashe74 [19]

Answer:403

Step-by-step explanation:

5 0 9

- 1 0 6

''''''''''''''"''""''''''

4 0 3

''''''''''''''''''''''''''''

5 0

3 years ago

ABCD is a parallelogram. If AB =3x+4, and CD =4x-1, find the length of AB

RSB [31]

If AB = CD, then 3x+4 is equal to 4x-1

3x + 4 = 4x - 1
Add one to both sides to cancel out.
3x + 5 = 4x
Subtract 3x from both sides to cancel out.
5 = x

Now, substitute the 5 in place of the x in the equation for AB (3x+4)

3(5) + 4
15 + 4
19

Final Answer: B) 19

7 0

3 years ago

Read 2 more answers

F(x) = x+3

Ksivusya [100]

Answer:

I got 2x^3+3x^2-4x-12

Step-by-step explanation:

I hope this helps a little bit

3 0

1 year ago