The ratio of rock music to total CDs that ella owns is 25/40. Paolo has 50 rock music CDs. The ratio of rock music to total CDs in hos collection is equivalent to the ratio of rock music to total CDs in ella's collection. How many CDs do they own?

Answers

Answer 1

Answer: They own a total of 120 CDs.

GIVEN:
Ella: ratio of rock music to total CDs that she owns 25/40
Paolo: has 50 rock music CDs. The ratio of rock music to total CD is equal to Ella's ratio.

Proportion: a/b = c/d where ad = bc

25/40 = 50/x
25x = 40 * 50
25x = 2000
25x / 25 = 2000 / 25
x = 80 total of Paolo's CDs

Total of Ella's CDs = 40
Total of Paolo's CDs = 80
Total CDs in all 120

Answer 2

Answer:

Answer:

120

Step-by-step explanation:

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Complete the table of values

If x= root 7+ root 6 /root 7-root 6 then find the value of (x+1/x)

Answers

Answer:

$\huge\boxed{x+(1)/(x)=(13+2√(42))+(13-2√(42))=26}$

Step-by-step explanation:

$x=(\sqrt7+\sqrt6)/(\sqrt7-\sqrt6)\cdot(\sqrt7+\sqrt6)/(\sqrt7+\sqrt6)=((\sqrt7+\sqrt6)^2)/((\sqrt7-\sqrt6)(\sqrt6+\sqrt7))\n\n\n\text{use}\ (a+b)^2=a^2+2ab+b^2\ \text{and}\ (a-b)(a+b)=a^2-b^2$

$x=((\sqrt7)^2+(2)(\sqrt7)(\sqrt6)+(\sqrt6)^2)/((\sqrt7)^2-(\sqrt6)^2)\n\n\n\text{use}\ (√(a))^2=a,\ \text{for}\ a\geq0\n\n\nx=(7+2√(42)+6)/(7-6)=(13+2√(42))/(1)=13+2√(42)\n\n(1)/(x)=(1)/(13+2√(42))\cdot(13-2√(42))/(13-2√(42))=(13-2√(42))/(13^2-(2√(42))^2)=(13-2√(42))/(169-168)\n\n(1)/(x)=13-2√(42)$

Un automóvil gasta 5 litros de gasolina cada 80 km. Si quedan en el depósito 6 litros, ¿cuántos kilómetros podrá recorrer el automóvil?

Answers

The car can travel 96 Km in 6 liters.

What is Unitary Method?

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

A car uses 5 liters of gasoline every 80 km.

So, the car travel in 1 liters of gasoline

= 80/5

= 16 liter

and, in 6 liter the can travel

= 14 x 6

= 96 Km

Hence, the car can travel 96 Km

Learn more about Unitary Method here:

brainly.com/question/22056199

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The Translation of the Question is

A car uses 5 liters of gasoline every 80 km. If there are 6 liters left in the tank, how many kilometers can the car travel?

Planteamos una regla de tres simple directa:

Litros de gasolina Kilómetros

5 80

6 x

x=(6*80)/5 = 96 Km

Solución: Podrá recorrer 96Km

el teatro tiene 20 filas de asientos con 18 asientos en cada fila. Los boletos cuestan $5.00. El costo si se vende todos los asientos es de 20×18×5.

Answers

el costo sería $1,800

Susan tips at the rate of $75 to 5 waiters. How many waiters will she be tipping, if she can afford a $90 tip?

Answers

She will be tipping 6 waiters if she afford a $90 tip.

Hope it Helps :]

Answer:6

Step-by-step explanation:

What is the value of a in the equation a = 2 + 3a + 6?

Answers

a = 2+3a +6

a-3a = 8

-2a = 8

a = -8/2 = -4

What is the absolute value of 8.75

Answers

the answer is 8.75 cause absolute value is just how amny units a number is from zero

To find an absolute value you ask yourself "how far away is it from 0?" And that amount is the absolute value.

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