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Firdavs [7]
4 years ago
13

A sign says that the price marked on all music equipment is 35% off the original price. You want to buy an electric guitar for t

he $315. Write an equation to represent the total cost c for the price p with a 35% discount
Mathematics
1 answer:
zaharov [31]4 years ago
8 0

Step-by-step explanation:

c=p-0.35p

If the guitar is 315 dollars, then the price with discount is 204.75

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João emprestou R$ 1000,00 a seu amigo José. Para que José conseguisse o empréstimo com o amigo, foram definidas as seguintes con
pochemuha

Answer:

La opción correcta es;

d) R $ 1.200,00

Step-by-step explanation:

El monto que Joao prestó a José = R $ 1.000,00

La duración del préstamo = 6 meses

El plazo de interés del préstamo = interés simple del 10% por trimestre

La cantidad que José tiene que pagarle a Joao después de 6 meses viene dada por la siguiente fórmula de interés simple;

A = P · (1 + r · t)

A = La cantidad que José tiene que pagarle a Joao después de 6 meses

P = La cantidad que Joao prestó a José = R $ 1.000,00

r = La tasa de interés = 10% / trimestre = 10% / (3 meses) = 0.1 / (3 meses)

t = La duración del préstamo = 6 meses

Por lo tanto, al sustituir los valores anteriores en la fórmula de interés simple, tenemos;

A = R $ 1.000,00 × (1 + 0,1 / (3 meses) × 6 meses) = R $ 1.000,00 + R $ 200,00 = $$ 1.200,00

El monto que José debe pagar a Joao después de 6 meses = R $ 1.200,00

8 0
3 years ago
-9x+5<17 AND 13x+25<-1
fgiga [73]

Answer:

x < -3 1/2 or 3.5

Step-by-step explanation:

-9x + 5 < 17

13x +25 < -1

If we add the 2 equations together, we will have

4x + 30 < 16

4x < 16 - 30

4x < -14

Divide both sides by 4

x< -14/4

x < -3 1/2 or 3.5

4 0
4 years ago
a polygon has two interior angles of 120 degree each and the others are 150 degree each calculate the number of sides and the su
trapecia [35]

Answer:

  • 10 sides
  • angles total 1440°

Step-by-step explanation:

The formula for the total of interior angles can be used together with the given angle values to write an equation for the number of sides.

<h3>Setup</h3>

The total of interior angles of an n-sided polygon is 180°×(n -2). In the given n-sided polygon, two angles are 120° and (n -2) angles are 150°. The total of angles is the same either way it is computed:

  2×120 +(n -2)150 = (n -2)180

<h3>Solution</h3>

Subtracting (n-2)150, we have ...

  240 = 30(n -2)

  8 = n -2 . . . . . . . . divide by 30

  10 = n . . . . . . . . add 2

The polygon has 10 sides.

The total of interior angles is ...

  angle sum = 180°×(10 -2) = 1440°

The sum of interior angles is 1440°.

4 0
2 years ago
Read 2 more answers
paper costs $1.50, which inequality is used to find how many rolls of paper could be purchased with less than $12?
Usimov [2.4K]

Answer:

1.50x < 12 (the inequality would just be "less than")

Step-by-step explanation:

4 0
3 years ago
What is 4.3125 in fraction simplist form
seropon [69]
Simplest form: 4 15/16
4 0
3 years ago
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