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beks73 [17]
2 years ago
6

If i have 35% of a phones and its now $78 how much was the phone before the discount

Mathematics
1 answer:
denpristay [2]2 years ago
7 0

Step-by-step explanation:

Multiply $78 by by 65/100 to determine the original price.

78 can be put over 1.

<u>Multiply</u><u>:</u>

\frac{78}{1}  \times  \frac{65}{100}  =  \frac{5070}{100}

<u>Simplify by dividing the numerator and denominator by 100:</u>

\frac{5070 \div 100}{100 \div 100}  =  \frac{50.70}{1}

The original price was $50.70.

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Nine increased by the product of a number and 2 is less than or equal to 27.
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Answer:

x≤9

Step-by-step explanation:

9+2x≤27

1) Subtract both sides by 9:

2x≤18

2) Divide both sides by 2:

x≤9

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What is the area of the frame around the picture?
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Rotate the figure shown 180° clockwise. What is the coordinate of J'? <br> C. (7,6)<br> D. (-6,7)
oee [108]

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(6, 7)

Step-by-step explanation:

rotating a shape 180 degrees will create the same shape, with similar coordinates. Therefore, drawing a straight line through the origin, would make the coordinates of J (6, 7)  

5 0
3 years ago
En un examen de admisión de 120 preguntas, cada respuesta correcta vale 2 puntos y por cada incorrecta se quita medio punto. Un
padilas [110]

Answer:

Respondió mal 64 preguntas.

Step-by-step explanation:

De acuerdo a la información proporcionada puedes plantear las siguientes ecuaciones:

x+y=120 (1)

2x-0,5y=80 (2)

x es el número de preguntas correctas

y es el numero de preguntas incorrectas

Primero debes despejar "x" en (1):

x=120-y (3)

Después, debes reemplazar (3) en (2):

2(120-y)-0,5y=80

240-2y-0,5y=80

240-80=2,5y

160=2,5y

y=160/2,5

y=64

Ahora puedes reemplazar el valor de "y" en (3) para encontrar el valor de "x":

x=120-y

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De acuerdo a esto, la respuesta es que el postulante respondió mal 64 preguntas.

6 0
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