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olasank [31]
3 years ago
8

There are 11 red and blue

Mathematics
2 answers:
Harrizon [31]3 years ago
4 0
There are 11 notebooks and 7 are blue. So subtract 7 from 11.

11 - 7= 4
so the answer is

4 red notebooks
daser333 [38]3 years ago
3 0
4 because 11-7=4 is it subtraction?
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At a restaurant, three salads, two sandwiches, and one drink cost $17.75. One salad, one sandwich, and three drinks cost $10.75.
Leno4ka [110]

Answer:

A salad costs $2.50

A sandwich costs $4.50

A drink costs $1.25

Step-by-step explanation:

Let x represent the salad, y represent the sandwich, and z represent the drink.

Since three salads, two sandwiches, and one drink cost $17.75:

3x + 2y + z = 17.75  (1)

Since one salad, one sandwich, and three drinks cost $10.75:

x + y + 3z = 10.75  (2)

Since a salad costs twice as much as a drink:

x = 2z  (3)

Multiply the equation 2 by -2 then, sum the equation 1 and equation 2:

-2x - 2y - 6z = -21.50

3x + 2y + z = 17.75

→ x - 5z = -3.75

Replace the x with 2z using equation 3:

2z - 5z = -3.75

-3z = -3.75

z = 1.25

x = 2z → x = 2.50

x + y + 3z = 10.75 → 2.50 + y + 3.75 = 10.75 → y + 6.25 = 10.75 → y = 4.50

5 0
3 years ago
A chef got 5 bags of onions. The red onions came in bags of 3 and the yellow onions came in bags of 6. If the chef got a total o
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Answer: 1 bag of yellow and 4 bags of red onions

Step-by-step explanation:

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A car travels distance of 340km at an average speed of 85km/h.How long does it take the car to travel in distance?​
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Answer:

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