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3 years ago

your friend reads the highway sign that says "its 71 miles to watertown." Is yiur friend correct? Explain.

Mathematics

1 answer:

pav-90 [236]3 years ago

4 0

Answer:

see the explanation

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

Observing the figure

The distance from their current location to Hudson is 9 miles

The distance from their current location to Mitchell is 65 miles

The distance from their current location to Watertown is 80 miles

Your friend is not correct

Your friend must have calculated the distance between Hudson and Watertown (80-9=71 miles)

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3 years ago

The sum of three numbers is 10. Two times the second number minus the first number is equal to 12.

eimsori [14]

Answer:

-10,1,19

Step-by-step explanation:

x+y+z = 10 (Equation 1)

2y-x= 12 (Equation 2)

x-y+2z = 7 (Equation 3)

(Equation 2): -x = -2y+12

x = 2y-12 (Equation 4)

(Equation 1) - (Equation 3): 2y-z = 3

-z = -2y+3

z = 2y-3 (Equation 5)

Substitute (4) and (5) into (1)

x+y+z = 10

(2y-12)+y+(2y-3) = 10

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Substitute y=1 into (2)

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2-x= 12

-x= 12-2

-x= 10

x= -10

Substitute y=1 and x=-10 into (1)

x+y+z = 10

-10+1+z = 10

z-9 = 10

z = 10+9

z = 19

Order: x = -10, y = 1, and z = 19

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3 years ago

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7nadin3 [17]

Answer: The final answer I got is -44.9

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