Answer:
y=2.5x-3
Step-by-step explanation:
first, we find the y-intercept, which is the number with a zero in the x
That would be -3
next, we find the slope
to do this, we have to take two numbers on the y side next to each other and subtract.
For this example we will use 7 and 2
7-2=5
And just to be positive, we will also do 12 and 7
12-7=5
Okay, now that we know that the number is growing by 5 every time, we know that it is now 5/2 because y is growing by 5 and x is growing by 2
Now, we make the x side grow by only 1, so to do this, we will divide both sides by two.
Now we have 5/1 or just 5
Finally, to put that into the right format, we do y=5x-3
You're Welcome
Good Luck
Answer: 1.48971 x 10^19
Step-by-step explanation: 1-light year is approximately 5.865 x 10^12 which is 5,865,000,000,000 kilometers or 6 trillion miles in 1-year. The Andromeda galaxy is indeed 2.54 million light-years from Earth which is the closest galaxy to our Milky Way Galaxy.
The best way to this is to put this into a scientific calculator. If it shows 1.48971E19, the E stands for exponent and the 19 next to the E stands to the 19th power. That is written as 1,489,710,000,000,000,000 miles!! from Earth. That's a lot of zeros. That's the reason scientific notation is used; to avoid all those zeros and express very small/large figures.
Hope this explanation helps.
Step-by-step explanation:
Arithmetic mean has become the most widely used measure of central tendency of data. ... That is why arithmetic mean is regarded as the ideal measure of central tendency. One demerit of arithmetic mean is that it is affected by the extreme value (of observed data)
A.
The rate is 12:2
B.
Set up a proportion:
12/2 = x/5
Multiply 5 to both sides:
60/2 = x
Divide:
30 = x
So he will walk 30 miles in 5 hours.
C.
To find out, we can divide 12 / 2.
12 / 2 = 6 miles per hour
PEMDAS
(9)(5) + 8
45 + 8
53
