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DedPeter [7]
3 years ago
7

Dennis walks from (–5, –2) to (–5, 5) on the map. Which expression represents the distance that he walked? |-2| + |5| |-5 + 5| |

-2| - |5| |-5| + |-5|
Mathematics
1 answer:
maks197457 [2]3 years ago
7 0

Answer:

|-2| + |5|

Step-by-step explanation:

Dennis walks from (–5, –2) to (–5, 5) on the map.

Point on the format (x,y). On the x-coordinate, he stayed at the same position, x = -5, so it does not enter the distance calculation.

On the y-coordinate, he went from -2 to 5, so the distance is of:

d = 5 - (-2) = 5 + 2 = |5| + |2| = |5| + |-2| = 7

So the correct option is |-2| + |5|

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John has two colored varieties of water bottles: white water bottles and black water bottles. The total number of water bottles
mixas84 [53]

Answer:

15 black water bottles

Step-by-step explanation:

let w represent white water bottles, and let b represent black water bottles.

set up a system of equations:

w+b=20

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(the top equation shows that the number of white water bottles he sold and the number of black water bottles he sold equals to 20, since it says that the total number of water bottles is 20. the bottom equation shows that white water bottles cost $1, and black water bottles cost $2, and that the total amount of money he got from selling them is $35).

in the top equation, isolate w:

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now we do substitution. in the bottom equation, substitute 20-b for w:

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then, solve:

b+20=35

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4 0
2 years ago
How do I create an equation and solve for x
vekshin1

Answer:

Equation: (2x + 30) + 106 = 180

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Step-by-step explanation:

<u>We know that the missing angle from within the triangle and the expression 2x + 30 makes 180 so we can say;</u>

180 - (33 + 41) = missing angle

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Now we can set up our equation to solve for x:

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