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3 years ago

Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45

Mathematics

1 answer:

barxatty [35]3 years ago

7 0

The increase of 45 to 75 is a positive increase. The decrease from 75 to 45 is a negitive

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The sixth grade art students are making a mosaic using tiles in shapes of right triangles. Each tiles has the leg measures of 5.

Drupady [299]

Given:

Each right triangular tiles has the leg measures of 5.2 cm and 6 cm.

There are 150 tiles in the mosaic.

To find:

The area of the mosaic.

Solution:

We know that, the area of a triangle is:

$A=\dfrac{1}{2}\times Base\times height$

So, the area of Each right triangular tile is:

$A=\dfrac{1}{2}\times 5.2\times 6$

$A=\dfrac{1}{2}\times 31.2$

$A=15.6$

There are 150 tiles in the mosaic. So, the area of the mosaic is:

$Area=15.6\times 150$

$Area=2340$

Therefore, the total area of the mosaic is 2340 cm ².

5 0

3 years ago

Volume of this cone

ArbitrLikvidat [17]

Answer:

669.9 ft³

Step-by-step explanation:

The formula for volume of a cone:

$v=\pi r^2*\frac{h}{3} (3.14*radius*radius*\frac{height}{3} )$

$r = radius,\pi =pi,h=height.$

The radius is 8; the height is 10.

From here, we can just plug the numbers into the formula.

$\pi 8^2*\frac{10}{3} (3.14*8*8*\frac{10}{3} ) = 669.866666667.$

$669.866666667$ ≈ $669.9.$

7 0

3 years ago

What is 1/2 y − 5 =−7

alexgriva [62]

Answer:

=-4

Step-by-step explanation:

4 0

3 years ago

Is 21/25 equal to 85/100

Iteru [2.4K]

Answer:

nope it is equal to 84/100 though

Step-by-step explanation:

cross multiply

21 x

-------- -----------

25 100

21*100= 2100

2100/25= 84

x=84

I hope this helped!

8 0

3 years ago

Un carro recorre 784 kilometros en una hora expresar la rapidez en m/sg

9966 [12]

Answer:

217.7777 m/s

Step-by-step explanation:

1km = 1000 metros

784 km = 784*1000 = 784000 metros

1 hora = 3600 segundos

entonces:

784 kilómetros en una hora = 784km/h = 784000m/3600ses

= 217.7777 m /s

es decir que recorre en cada segundo:

217.7777 metros.

Tarea relacionada:

https://brainly.lat/tarea/16056884

4 0

3 years ago