Every day Rianna was walking towards their school from their home. In his 30 minutes he had reached half a kilometer. He still has (1) an hour so he can reach their school. How many kilometers would Rianna have to travel so she can reach their school? A. 1 kilometre
B. 3 kilometers
C. 4 kilometres
D. 6 kilometers ​

Step-by-step explanation:

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1 kilometer

Step-by-step explanation:

Well Rianna already walked for half a Kilometer in 30 mins so in one hour she can walk 1 kilometer

half a kilometer * 2 is one kilometer

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

answer is  

a.

p = 78

step-by-step explanation: