HIS walking rate was 1 mile per hour because 20min times 3 is 1 hour, and 1/3 times 3 is 1 mile thus 1mph if can plz mark brainliest
Answer:
Step-by-step explanation:

To make this easier, to get ride of the fractions, we can multiply both sides by 4

now use the distributive property

now we want to isolate x to one side and isolate all the constants to the other

now simplify

to test, we can plug in back to the original

it works
Answer:
:( Brainly can be so unfair sometimes.
Step-by-step explanation:
It is 2.226 X 10(Exponent is 11)
Step-by-step explanation:
(note: I'm only answering the ones I know vs giving you wrong answers for the others!)
1. ROS=Obtuse (larger then ninty degrees)
2. octagon has 8 angles (octo means eight, after all!)
3. If a figure has three sides, it is a triagle (not positive on this one)
4. symmetric property of congruence (this one's a simple search :p )
5. N/A (although I believe its angle BEC=124 degrees, as every other choice Is proven to be true)
6. congruent complements theorem (this is because we are given that 3 is a suppliment of 4. we are also given that 2=4. Based on this, then 1=3 is congruent based on 1 being suppliment of 2, 2=4, and 3 being a suppliment of 4)
7. N/A
8. N/A (the picture is too fuzzy for me to make any ideas)
I'm sorry I couldn't solve them all, but I hope this at least gets you somewhere! Have a great day!