3 years ago

Solve the system of equations using the substitution method.

1 answer:

5 0

Okay so here to find the answer you have to solve for any one by setting them in y=mx+b form
y=-3x+7 x=-2y-16
2y=-x-16    6=-2y-16
x=6    22=-2y
   -11=y

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A map has a scale of 1:25 000.How many kilometres in actual distance is represented by the length 6.8cm on a map?solution

Ghella [55]

Answer:

$= 1.7km$

Step-by-step explanation:

$1 : 25000 \\ 1cm = > 25000cm \\ 6.8cm = > 25000 \times 6.8 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 170000cm \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 1700m \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 1.7km$