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mafiozo [28]
3 years ago
6

Mónica ha comprado un CD el dependiente le dice que ha descontado el 20% de su valor siendo ese descuento de $20 cuánto costaba

inicialmente el CD
Mathematics
1 answer:
taurus [48]3 years ago
5 0

Answer:

El CD costaba $100 inicialmente.

Step-by-step explanation:

Dado que la información indica que el porcentaje de descuento es 20% y ese descuento tiene un valor de $20, puedes usar una regla de tres para encontrar el valor que representa el 100% que sería el valor inicial del CD dado que el 20% del valor es igual a $20:

20%  →  20

100% →    x

x=(100*20)/20=100

De acuerdo a esto, la respuesta es que el CD costaba $100 inicialmente.

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Jane has 34 candles leftover from the last craft show and Brianna
katrin [286]

Answer:

4 hours

Step-by-step explanation:

Given that the number of leftover candles for Jane = 34

and  the number of leftover candles for Brianna = 2

Rate of candle making for Jane = 24 candles/ hour

Rate of candle making for Jane = 32 candles/ hour

As they work for h hours to make candles.

So, in h hours, the number of new candles made by Jane = 24h candles

For Jane, the total number of candles after h houres, including the leftover candles = 24h+34 \cdots(i)

Similarly, in h hours, the number of new candles made by Brianna = 32h candles

For Brianna, the total number of candles after h houres, including the leftover candles = 32h+2 \cdots(ii).

As they want to have the same number of candles at their stalls, so equating the numbers of candles from equations (i) and (ii), we have

24h+34=32h+2 \\\\\Rightarrow 32h-24h=34-2 \\\\\Rightarrow 8h=32\\\\

\Rightarrow h=32/8=4 hours.

Hence, both need to work for 4 hours to have the same number of candles.

5 0
3 years ago
Solving Expressions Analytically Consider the following equation: x3+4x2+4x+16=0. Solve for x. Your answer should be stored in a
Shalnov [3]

Answer:

List is {-2i, 2i, -4)

Step-by-step explanation:

This is a third order polynomial, so we expect three roots (solutions).

Note that we can factor this expression by grouping:

(x²)(x + 4) + (4)(x + 4) = 0, or

(x + 4)(x² + 4) = 0

The factor (x + 4) corresponds to the root/solution x = -4, and:

The other factor (x² + 4) corresponds to the roots/solutions x = 2i and x = -2i.

List is {-2i, 2i, -4)

5 0
4 years ago
The square on the right is a scaled copy of the square on the left. Identify the scale factor. Express your answer in simplest f
Oksanka [162]
Square on the right is .9765 the measurements of the square on the left or 85:83
6 0
3 years ago
Please help and answer both questions i will really appreciate it
vladimir1956 [14]

Answer for 1. X=12.5

6 0
4 years ago
The function D(t)=18t2−130t gives the distance a car going a certain speed will skid in t seconds. Find the time it would take f
Assoli18 [71]

The time it will take for the car to skid for 150 feet is 8.23 seconds.

<h3>How to find the time the car will skid?</h3>

The function D(t) = 18t² − 130t gives the distance a car going a certain speed will skid in t seconds.

The time the it would take for the car to skid for 150 feet can be calculated as follows:

Therefore,

D(t) = 18t² - 130t

150 =  18t² - 130t

18t² - 130t - 150 = 0

divide by 3

9t² - 65t - 75 = 0

Hence,

t = 65 ± 5√277 / 18

t = 8.23425471586 or -1.01166666667

Hence,

t = 8.23 seconds.

Therefore, the time it will take for the car to skid for 150 feet is 8.23 seconds.

learn more on function here: brainly.com/question/13927655

#SPJ1

7 0
2 years ago
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