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3 years ago

Please I need help!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Ray Of Light [21]3 years ago

7 0

Answer: 40

Step-by-step explanation:

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What’s 19,975 divided by 25 show your work

Dvinal [7]

the answer to the question is 799

6 0

3 years ago

As you might know from reading the Harry Potter books, wizarding money comes in three denominations: bronze Knuts, silver Sickle

Nina [5.8K]

Answer:

Minimun amount = $95,48

Step-by-step explanation:

We need to buy the book that costs 12 galleons, 16 sickles, 25 knuts.

At the bank we need to exchange our dollars. We know that:

1 galleon = $7,35

And:

1 galleon = 17 sickles

1 sickle = 29 knuts

First we use a rule of three to convert everything to galleons:

1 galleon = 17 sickles ⇒ 1 sickle = 1/17 galleons

$\frac{1 galleon}{x}=\frac{17 sickles}{1 sickle}$

$x=\frac{1}{17} sickles$

1 sickle = 1/17 galleons = 29 knuts ⇒ 1 knut = 1/493

$\frac{1/17 galleons}{x}=\frac{29 knuts}{1 knut}$

$x=\frac{1}{493} galleons$

And now we need to convert every wizarding money to dollars by using our reference above:

1 galleon = $7,35

1 sickle = 1/17 galleons = $7,35 / 17 ≅ $0,4323

1 knut = 1/493 galleons = $7,35 / 493 ≅ $0,0149

Finally we calculate the cost of the book:

Galleons: 12 x $7,35 = $88,2

Sickles: 16 x $0,4323 = $6,91

Knuts: 25 x $0,0149 = $0,37

Cost of the book = $88,2 + $6,91 + $0,37 = $95,48

So this is the minimun amount of dollars you need to exchange to purchase the book.

8 0

3 years ago

Where r is the radius of the cylinder and h is the height of the cylinder.

AnnyKZ [126]

<h3>Given:-</h3>

radius = 7 inches
height = 9 inches

$\\ \\$

Surface area of cylinder

$\\ \\$

we know:-

$\bigstar \boxed{ \rm Surface \: Area \: of \: Cylinder=2\pi rh+2\pi {r}^{2} }$

$\\ \\$

So:-

⇢SA of cylinder=2πrh+2πr²

$\\$

⇢SA of cylinder = 2πr(h+r)

$\\$

⇢SA of cylinder = 2 × π × 7(7 + 9)

$\\$

⇢SA of cylinder = 2 × π × 7 (16)

$\\$

⇢SA of cylinder = 2 × π × 112

$\\$

⇢SA of cylinder = 2 × 112 × π

$\\$

⇢SA of cylinder = 224π inches ²

$\\$

.°. Surface Area of cylinder is 224π inches².

3 0

2 years ago

A jewelry store marks up the price of its jewelry up 50%. What will be the selling price of an item that the store purchased for

snow_tiger [21]

Answer: $142.5

Step-by-step explanation: If the price is being marked up by 50%, you take 50% or half of the original price of $95, which is 47.5, and add it to your original price.

95 + 47.5 = 142.5

3 0

3 years ago

Lijuan threw a softball 124 feet on her first throw. She threw the softball 30% farther on her second throw. On her third throw,

Ymorist [56]

Lijuan threw the ball 17.05 feet further on her third throw

5 0

3 years ago

Read 2 more answers