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Darya [45]
2 years ago
15

Which is a function? look at pic

Mathematics
1 answer:
-Dominant- [34]2 years ago
8 0

Answer:

option 2 {(12, 3), (11,2), ...}

Step-by-step explanation:

For functions, multiple x-values can have the same y-value but each y-value must have a unique x-value. The second option matches this criterion.

You might be interested in
two brothers marco and fernando are training for a marathon marco runs at a rate of 6miles per hor. Fernando funs at at a rate o
satela [25.4K]
We know that
speed=distance/time
solve for time
time=distance/speed

in this problem
<span>Marco runs at a rate of 6 miles per hour. 
</span><span>Fernando funs at a rate of 7.2 miles per hour
Difference=7.2-6=1.2 miles/hour
so
speed=1.2 miles/hour
distance=0.3 miles
time=?
</span>time=distance/speed-----> 0.3/1.2-----> 0.25 hour-----> 0.25*60=15 minutes
<span>
the answer is
0.25 hour (15 minutes)

Alternative Method
Let 
x---------> Fernando's distance when Marco is 0.3 miles apart

</span>Fernando funs at a rate of 7.2 miles per hour
<span>for distance =x
time=x/7.2------> equation 1

</span>Marco runs at a rate of 6 miles per hour. 
for distance=x-0.30
time=(x-0.30)/6------> equation 2

equate equation 1 and equation 2
 7.2*(x-0.3)=6x-----> 7.2x-2.16=6x
7.2x-6x=2.16------> x=2.16/1.2-------> x=1.8 miles

time=x/7.2-----1.8/7.2=0.25 hour
6 0
3 years ago
What is the error in -1.75+-1+4.25+3.75+1+ -4.75+2=18.5
allochka39001 [22]

Answer:

they don't respect the signs

Step-by-step explanation:

when you have a problem like the one above you have to put parentheses to the negative numbers either to add or subtract them, there is where the sign rule comes in

6 0
3 years ago
Read 2 more answers
The distance between the school and the airport on a map is 7.25 cm. The scale of the map is 1 cm : 12m. What is the actual dist
SpyIntel [72]

Answer: 87 m


Step-by-step explanation:

This problem can be solved by using a simple ratio and proportion.

The way you figure this out is::

Model = 12 m/ 1 cm = x/7.25 cm

Solve for x and you should receive this answer:

x = 87 m


hope I helped, best wishes to your future studies...

-a


8 0
3 years ago
What is the area of a triangle that has a height of 6 feet and a base length of 7 feet? (5 points)
Oksanka [162]
Formula= Base times height divided by 2
               

6 x 7= 42
42/ 2
answer= 21
3 0
3 years ago
Read 2 more answers
I need help!!! I’ll mark you brainliest<br> This is timed!!
devlian [24]

Answer:

Using the inverse composition rule you know that if (fog)=x and (gof)=x then the functions are inverses.

( g o f ) = ( 7 x + 1 ) − 1 7  this will result in (gof)=x ( f o g) = 7 x − 1 7 +1 = x − 1 + 1 =x

graphically you can check this if it seems that the functions are reflected over the line x=y.

Step-by-step explanation:

3 0
2 years ago
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