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2 years ago

While hiking, two hikers found a cave that went

Mathematics

1 answer:

anastassius [24]2 years ago

7 0

Answer:

the hiker who went to a depth of 25 feet

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Is he cute his name is arlo here is 5 points and brainliest

PtichkaEL [24]

Answer:

He is so cute

Step-by-step explanation:

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3 years ago

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What is the shaded portion of the circle

blagie [28]

Answer:

$(5\pi-11.6)\ ft^{2}$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of the sector minus the area of the triangle

step 1

Find the area of the circle

the area of the circle is equal to

$A=\pi r^{2}$

we have

$r=5\ ft$

substitute

$A=\pi (5)^{2}$

$A=25\pi\ ft^{2}$

step 2

Find the area of the sector

we know that

The area of the circle subtends a central angle of 360 degrees

by proportion find out the area of a sector by a central angle of 72 degrees

$\frac{25\pi}{360}=\frac{x}{72}\\ \\x=72*25\pi /360\\ \\x=5\pi\ ft^{2}$

step 3

Find the area of triangle

The area of the triangle is equal to

$A=\frac{1}{2}(2.9+2.9)(4)= 11.6\ ft^{2}$

step 4

Find the area of the shaded region

Subtract the area of the triangle from the area of the sector

$(5\pi-11.6)\ ft^{2}$

8 0

3 years ago

PLSSSS HELP ME WITH THIS QUESTION!!!

AysviL [449]

Given,

∠AOE = 30°

∠DOB = 40°

So, ∠EOD = 180 - (30+40) [angles on a straight line]

= 180 - 70

= 110

∠EOD = ∠COF [ vertically opposite angle]

∴ ∠COF = 110°

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3 years ago

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4(n-1)+2 = -23 +7n

liubo4ka [24]

Answer:

Step-by-step explanation:

4(n-1)+2 = -23 +7n

=> 4n - 4 + 2 = - 23 + 7n

=> 23 - 4 + 2 = 7n - 4n

=> 21 = 3n

$= > n = \frac{21}{3}$

=> n = 7 (Ans)

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3 years ago

A bag contains 12 red marbles The ratio of red marbles to blue marbles is 4:3?

Ostrovityanka [42]

There are 9 blue marbles.

Step-by-step explanation:

12÷4=3

3×3=9

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3 years ago