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3 years ago

5

HELP ! find the area of the shapes below

2 answers:

aksik [14]3 years ago

5 0

Don’t know tbh
Sorry

nekit [7.7K]3 years ago

3 0

I think I know the Pentagon one. I believe it'd be 225 yd.

The rectangle is 15 multiplied by 12, which is 180. And because the triangle is not a right triangle, you can just think of it as a rectangle that was broken apart. So 3 multiples by 15, 45. Add 45 and 180 to get the answer.

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Kalin walks at a steady rate of 1.1 miles per hour. The beach is 4 miles from his

Vesna [10]

Answer:

It would take him 4 hrs

Step-by-step explanation:

and 40 or 4 mins

6 0

3 years ago

Find the volume of the largest circular cone that can<br> beinscribed in a shpere of radius 3.

Aleksandr [31]

Answer:

$V =\dfrac{32}{3}\pi$

Step-by-step explanation:

given,

radius of sphere = 3

volume of cone:

$V = \dfrac{1}{3}\pi r^2h$

r is the radius of circular base

h is the height of the cone

here r = x and h = 3 + y

now, volume in term of x and y

$V = \dfrac{1}{3}\pi x^2(3+y)$

Applying Pythagoras theorem

x² + y² = 3²

$x = \sqrt{9-y^2}$

$V = \dfrac{1}{3}\pi ( \sqrt{9-y^2})^2(3+y)$

$V = \dfrac{1}{3}\pi ( 9-y^2)(3+y)$

$V = \dfrac{1}{3}\pi (27 + 9 y - 3 y^2-y^3)$

differentiating both side

$\dfrac{dV}{dy} =\dfrac{1}{3}\pi ( 9-6y- 3y^2)$

for maxima $\dfrac{dV}{dy} = 0$

$\pi ( 3-2 y - y^2)=0$

y² + 2 y - 3 = 0

(y+3)(y-1)=0

y = 1,-3

y cannot be negative so, volume at y = 1

$V = \dfrac{1}{3}\pi (27 + 9 (1)- 3(1)^2-(1)^3)$

$V =\dfrac{32}{3}\pi$

Hence, the largest cone which can be inscribed in the spheres of the radius 3 has volume $V =\dfrac{32}{3}\pi$

5 0

3 years ago

Solve equation.<br> 2x-5y=20

Novay_Z [31]

If you solve for x you get:
x=(<span><span><span>5/2)</span>y</span>+<span>10
</span></span>
If you solve for y you get:
y=(<span><span><span>2/5)</span>x</span>−<span>4</span></span>

5 0

4 years ago

Can someone tell me how to solve translations please?

Sophie [7]

Step-by-step explanation:

Hey there!

Here; The coordinates are ; H(-4,-2), G(-5,3), F(-2,1)

The translation P(x,y) = P'(X+7,y)

Use same formula.

H(-4,-2) -------> P'(3,-2)

G(-5,3)-----------> G'(2,3)

F(-2,1)------------> F'(5,1)

<u>There</u><u>fore</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>Option</u><u> </u><u>C</u><u>.</u>

<u>Hop</u><u>e</u><u> it</u><u> helps</u><u>.</u><u>.</u>

6 0

3 years ago

Divide 15 root 20 by 6 root 125

nata0808 [166]

Answer:

15√20/6√125

=√20/√5

=2

Step-by-step explanation:

7 0

4 years ago