Answer:
Read below.
Step-by-step explanation:
Wrong:
(2.5 x 10^9) + (5.3 x 10^8) =
(2.5 + 5.3) x (10^9 x 10^8)
=
7.8 x 10^7=
7.8 x 10,000,000=
780,000,000
<u>Bold is edited by me</u>
Correct:
(2.5 x 10^9) + (5.3 x 10^8)=
(2.5 x 1,000,000,000)+(5.3 x 100,000,000)=
2,500,000,000+5,300,000,000=
7,800,000,000
The problem is that whoever wrote it swapped the numbers in the parentheses, added a pair of them together and multiplied the other pair. You are not supposed to take out the pairs and swap them if you'd like or the answer is incorrect. Second mistake is that 
is not 
I do not know how and where you got that answer from.
Answer:
42.1%
Step-by-step explanation: helped by the flower dude
Answer:
.25 or 1/4 mile
Step-by-step explanation:
7.2 miles biking x 2 (round trip)= 14.4 miles
Total miles is 16.9-14.4= 2.5 miles left to run 10 times around a small pond. So to find out the distance of each lap around the pool you divide 2.5 miles by 10 laps equals .25 or 1/4 Mike is the distance around the pond.
Answer:
Step-by-step explanation:
Find the slope using the slope formula: 
, m=4
Use any set of points you know to solve for b. (2, 0)
Pug in everything you know: 0=4(2)+b
You get: 0=8+b
Subtract 8 to get the b by itself. b=-8.
Now just plug in and you'll get the answer!
Answer:
Step-by-step explanation:
(1/6)(1/6)=1/36
2.777 rounded to 2.8%
