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podryga [215]
3 years ago
7

Can someone help asap, please? Select all of the graphs that represent functions.

Mathematics
1 answer:
Degger [83]3 years ago
8 0
B is the answer , because in functions, we can’t have two X for one Y
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A ball is dropped from the ground. T represents the time in seconds. To find the time you can you the equation Y= -16t^2 +44t. H
bagirrra123 [75]

Answer:

2.75 seconds.

Step-by-step explanation:

We have been given that a ball is dropped from the ground. T represents the time in seconds.

To find the time when the ball was in air, we will equate height of ball with 0 and solve for t.  

-16t^2+44t=0

Upon dividing both sides by 4, we will get:

-4t^2+11t=0

-t(4t-11)=0

-t=0\text{ (or) }(4t-11)=0

t=0\text{ (or) }4t-11=0

t=0\text{ (or) }4t=11

t=0\text{ (or) }t=\frac{11}{4}

t=0\text{ (or) }t=2.75

Since our given function is a downward opening parabola, so ball will be in air between both t-intercepts.

Since the ball touches the ground at 2.75 seconds, therefore, the ball would be in air for approximately 2.75 seconds.

4 0
3 years ago
What is the equation of a line that has a slope of 2 and passes through the point (1,-9)?
muminat
I’m not sure what kind of equation you want but if you want point slope it’s
Y+9=2(x-1) because the formula is y-y1=m(x-x1) so you just fill it in but if this isn’t the kind of answer you were looking for I wouldn’t mind helping you in the comments :)
6 0
3 years ago
HELP!!!!!!!!!!!!!!!!!!!!!!!
Agata [3.3K]

Answer:

B would be (-1, -2)

C would be (-1, 1)

A would be (-4, -2)

Step-by-step explanation:

The ordered pairs are affected by the y value. The X value stays the same since you didn't move the shape any to the right or left. The y values went down three on all of the points because you moved the whole shape down three spots.

I hope this helps! Please mark as brainliest! Just ask if you need anymore help! :D Good Luck!

8 0
4 years ago
Sophia bought 18 packs of lemonade each pack has 24 cans answer key
Juliette [100K]
Answer is 432 cans in total
18 packs times 24 cans in each is 432
5 0
2 years ago
I need to what 25% of 780 is
beks73 [17]

Answer:

195

Your welcome

3 0
4 years ago
Read 2 more answers
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