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MrRissso [65]
3 years ago
12

Irunt

Mathematics
1 answer:
natita [175]3 years ago
8 0

Answer:

30 = 2x + 3y

Step-by-step explanation:

x is the number of pens bought and y is the number of notbooks bought you graph this and you get a graph that shows you all the combinations.

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2 + 4 + 5 - 7 x 6 =
il63 [147K]

Answer:

-31

Step-by-step explanation:

We need to use BODMAS to figure out the answer to this extremely difficult question:

So first we need to multiply:

-7 × 6 = -42

Then we need to add:

2 + 4 + 5 = 11

Now we need to subtract:

11 - 42 = -31

8 0
3 years ago
Read 2 more answers
Observa los puntajes de las respuestas de una evaluación que tuvo de 100 preguntas. Si Alfredo contestó correctamente 57 pregunt
n200080 [17]

La pregunta está incompleta:

Observa los puntajes de las respuestas de una evaluación que tuvo de 100 preguntas. Si Alfredo contestó correctamente 57 preguntas, 16 incorrectas y el resto las dejó en blanco, ¿qué puntuación obtuvo en la evaluación?

Puntos por respuesta:

Correctas: 4

En blanco: -1

Incorrectas: -3

Answer:

Alfredo obtuvo una puntuación de 153.

Step-by-step explanation:

De acuerdo a la información proporcionada, conoces el número de preguntas en la evaluación y el número de preguntas que Alfredo contestó de forma correcta e incorrecta y tienes que restar estas del total de preguntas para encontrar el número de preguntas que dejó en blanco:

100-57-16=27

Ahora, debes multiplicar el número de respuestas correctas, incorrectas y en blanco por su respectivo puntaje:

Correctas: 57*4=228

En blanco: 27*(-1)=-27

Incorrectas: 16*(-3)=-48

Finalmente, debes sumar los resultados obtenidos por cada tipo de respuesta:

228+(-27)+(-48)= 228-27-48=153

De acuerdo a esto, la respuesta es que Alfredo obtuvo una puntuación de 153.

4 0
3 years ago
Step 1: A poll of 1500 college students were asked whether or not they had used the Internet to find a place to live sometime wi
Gnoma [55]

Answer:

n = 1500

Step-by-step explanation:

The sample size is the number of students  that were asked

n = 1500

7 0
3 years ago
Lucy wants to make different types of cheesecake. Each cheesecake uses 2/3 pound of cream cheese. She has 2 pounds of cream chee
AnnyKZ [126]
Lucy can make a total of 2 cheesecakes with 2 pounds of cream cheese.
8 0
3 years ago
there is a drawing with students name in a bag. there are 13 girls and 12 boys.what is the probability of drawing a girl's name
ryzh [129]

Answer:

13 in12

Step-by-step explanation:

6 0
3 years ago
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