Answer: a and b
Step-by-step explanation: plug in
So y=mx+b form
m=slope=rise over run
b=y intercepe or where it crosses the y axis
so one way is to input values for x and get vales for y exg
if x=1 then y=-2
if x=2 then y=1
if x=0 then y=-5 so some points are
(x,y)
(1,2)
(2,1)
(0,-5)
(3,4)
then plot those points
Scientific notation implies that all the zeros are taken away and replaced with a 10 raised to whatever appropriate power would be necessary to make the number in scientific notation equal to the original number.
In the number 780,000,000, we can see that there are 7 zeros, but the number before the zeros has two digits, so we need to tuck the decimal point in there, because the number has to be between 1 and 10 for math reasons.
7.8 ... but what do we raise it to? We know it has to be 10, but to what power? Well, we just count how many places to the left the decimal point has traveled. From the original number, the decimal point shifted 8 places to the left, so that is the number that we will raise the 10 to.
The final number looks like this:
780,000,000 in scientific notation is <span>
Hope that helped =)</span>
Answer:
28.57%
Step-by-step explanation:
Given data
Initial cost =$28
Final cost =$36
Required
The percentage change in cost
Percent change =final - initial/initial*100
Substitute
Percent change =36-28/28*100
Percent change =8/28*100
Percent change =0. 2857*100
Percent change =28.57%
There are 40 animals at a petting zoo.
Adult goats→x Child goats→a
Adult rabbits→y Child rabbits→b
<span>
There are twice as many adult rabbits as adult goats: y=2x
</span>There are three times as many child goats as adult goats: a=3x<span> There are exactly as many adult rabbits as there are child rabbits: b=y=2x
x+y+a+b=40⇒x+2x+3x+2x=40
8x=40⇒x=40/8⇒x=5
There are 5 </span><span> adult goats are in the petting zoo.</span>