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3 years ago

Which exponential function has an x-intercept?

Mathematics

1 answer:

luda_lava [24]3 years ago

3 0

Answer:

Step-by-step explanation:

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Need help please<br> thank you

Arte-miy333 [17]

Your answer would be B lol no but seriously your answer is B :')

4 0

3 years ago

Read 2 more answers

In a large bag of marbles, 20% of them are red. A child chooses 4 marbles from this bag. If the child chooses the marbles at ran

lubasha [3.4K]

Answer:

0.0256

Step-by-step explanation:

Assuming a binomial model, with probability of success (getting a red marble) p = 0.20. The probability of obtaining 'k' successes in 'n' trials is:

$P(x=k)=\frac{n!}{(n-k)!k!}*p^k*(1-p)^{n-k}$

For k = 3 red marbles in n = 4 trials:

$P(x=3)=\frac{4!}{(4-3)!3!}*0.20^3*(1-p)^{4-3}\\P(x=3)=4*0.20^3*0.8\\P(x=3) = 0.0256$

The probability that the child gets exactly three red marbles is 0.0256.

4 0

3 years ago

If f(x) = 2x + 6 and g(x) = x^3 ,what is (gºf)(0)?

Pie

Answer:

$(gof)(0)=216$

Step-by-step explanation:

If $f(x)=2\,x+6$ , and $g(x)=x^3$

then $(gof)(0)$ can be calculated via:

$g(f(0))=g(2\,(0)+6)=g(6)=(6)^3=216$

4 0

3 years ago

A group of people pays$720 for admission tickets to an amusement part. The price of an adult ticket is $15 and a child ticket is

Masteriza [31]

Answer:

Step-by-step explanation:

Set the number of children to n.

The number of adults is, thus, n + 25.

The total price of admission is $720, made up of adult tickets and child tickets.

The children paid $8 per child, or

8 * n

The adults paid $15 per adult, or

15 * (n + 25)

These sum of these is equal to the total cost of $720.

8*n + 15*(n + 25) = 720

8n + 15(n + 25) = 720

Multiplying 15 with both n and 25.

8n + 15n + 25*15 = 720

8n + 15n + 375 = 720

Subtracting 375 from both sides.

8n + 15n + 375 - 375 = 720 - 375

8n + 15n = 345

Adding together 8n and 15n.

23n = 345

Dividing both sides by 23.

n = 345/23 = 15

n = 15

As n is the number of children, there are 15 children in the group.

Answer: 15

5 0

3 years ago

Order -3.98, 3 8/9, -3 11/12, and 3.9 repeated from least to greatest

Mkey [24]

Answer:

Step-by-step explanation:

-3.98

3 8/9 = 3.888 (repeating)

-3

3.9

least to greatest :

-3.98 , -3, 3 8/9, 3.9

3 0

3 years ago