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Lisa [10]
2 years ago
9

Can you guys check these :) I’ll give brainleist :)

Mathematics
1 answer:
stiv31 [10]2 years ago
8 0

Answer:

9. No

10. Yes

Step-by-step explanation:

The first one is not, since you have (3, 3) and (3, 9).  In a function, each x maps to a single y.

The second one is since every x appears only once.

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Can someone please write an equation for each graph? PLEASE HELP
vovangra [49]

Answer:

Step-by-step explanation:

I used the following points.

x           y

-10        -1

-5         -1

-1           0

0           1

1            3

2           7

3           15

From which I think the graph turns out to be y = 2^(x + 1) - 1

-6         2

0          5

1           8

2         14

From which I get y = 3*2^x + 2

You may say to me that's all well and good, but how did you do it? You have to take a few wild guesses. It also helps to know where the question came from. What were you studying when the graphs were assigned?

I don't think there is a magic bullet for figuring these out. You just have to keep on trying until you get it.

One thing is certain. You should work on the y intercept (5) and the distance above or below the x axis. The distance above the x axis is 2 which means that c = 2.

y = a*b^x + c

c is the constant above or below the x axis. You need only read the graph to get the result. a is the hardest to find, but it will be just slightly easier when you let x = 0.

a + c = 5  Since c = 2  a must be 3

 

6 0
3 years ago
When you flip a biased coin the probability of getting a tail is 0.4. How many times would you expect to get tails if you flip t
olya-2409 [2.1K]

Answer:

50 im not 100% sure tho

Step-by-step explanation:

6 0
2 years ago
Is 2/3(3/4x-3/2) equal to 1/2x -1
ziro4ka [17]

Answer:

Step-by-step explanation:

that would be the anwer

6 0
3 years ago
Read 2 more answers
Is 4 greater than 4.002?
elixir [45]
No because 4=4.00000 and there is that much more than 4.00000 so 4.002 is more
5 0
3 years ago
Read 2 more answers
Joseph has a job walking dogs and gets paid per dog. He needs to walk 45 dogs to earn enough money to pay for his soccer team fe
rusak2 [61]

Using proportions, it is found that it will take him 22.5 hours to walk the 45 dogs.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

He walks 3 dogs in 1 hour and 30 minutes, we means that the time in hours it takes for him to walk a dog is:

t = 1.5/3 = 0.5 hours.

Hence the time it will take him to walk 45 dogs is given by:

45 x 0.5 = 22.5 hours.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

8 0
1 year ago
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