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dexar [7]
3 years ago
7

Please help me answer #4, #5 and #6

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
7 0

Answer:

4). The Washington Monument is 169.2-m tall.

Step-by-step explanation:

4). We know this because...

person     1.8       0.7

----------  = -----  = -------

Wash.        x       65.8

We then know to cross-multiply to get:  

1.8(65.8) = 0.7x

Which simplifies down to:

118.44 = 0.7x

x = 169.2

Answer:

5). The pond is 180ft wide.

Step-by-step explanation:

5). We know this because...

90       120

-----  = -------

135        x

We then know to cross-multiply to get:

90x = 120(135)

Which simplifies down to:

90x = 16200

x = 180

Answer:

6). The height of the clock tower is 13ft 9in.

Step-by-step explanation:

6). We know this because...

person       5.5         4

----------  =  --------  = -----

clock            x          10

We then know to cross-multiply to get:

5.5(10) = 4x

Which simplifies down to:

55 = 4x

x = 13.75 (13 ft 9 in)

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3.14 is the decimal for pi


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3 years ago
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One trampoline has a diameter of 10 feet. A larger trampoline has a diameter of 14 feet. How much greater is the area of the lar
kati45 [8]

Answer:

The larger trampoline is larger in area by 75.36 feet²

Step-by-step explanation:

There are two trampolines here; the larger and the smaller one.

The trampoline's area can be found using the area of a circle which is πr² or πd²/4, where "r" and "d" represent radius and diameter respectively.

Here we will let D be <em>the diameter of the larger trampoline</em> and d should be taken as <em>the diameter of the smaller trampoline</em>.

So, the difference in area will be πD²/4 - πd²/4 = π/4 (D² - d²), where π is given as 3.14.

So, the area difference = \frac{3.14}{4} × (14² - 10²) =  \frac{3.14}{4} × (196 - 100) = \frac{3.14}{4} × (96) = 75.36 feet²

7 0
3 years ago
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Can someone help me with these questions please it’s a big part of my grade also please explain as well I’ll mark u brainlist!
Murrr4er [49]
1) 12t

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12(5)= 60

Therefore, you need 60 players to fill in 5 teams.

Hope this helps!! :)
8 0
3 years ago
Jaime make $8.20 on hour in his part-time job. He made $53.30 last week. How many hours did he work.
andrew11 [14]

Answer:

he worked for 6 hours and 30 min

Step-by-step explanation:

what you do is take 53.30 and divide it by 8.20

4 0
3 years ago
A rectangle is 3 times as long as it is wide. if the area is 12 square feet find its perimeter.
WARRIOR [948]
Length=3*width
area=12
3W*W=12
w^2=4
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perimeter=2(l+w)
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                 =16
4 0
3 years ago
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