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scZoUnD [109]
3 years ago
14

Plz help

Mathematics
1 answer:
Pavel [41]3 years ago
7 0
$40 + $15g
So let’s say she has 3gb of data it would be 40+15(3)
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Which value is equivalent to the expression 23 + 34? A) 18 B) 72 C) 78 D) 89
Darya [45]

Answer:

none

Step-by-step explanation:

23+34=57

5 0
3 years ago
Read 2 more answers
Someone help me please :)
igor_vitrenko [27]

Answer:

<h2><u><em>mark me as brilliant ~_~</em></u></h2>

Step-by-step explanation:

3 0
3 years ago
Statistics show that about 42% of Americans voted in the previous national election. If three Americans are randomly selected, w
MrRa [10]

Answer:

19.51% probability that none of them voted in the last election

Step-by-step explanation:

For each American, there are only two possible outcomes. Either they voted in the previous national election, or they did not. The probability of an American voting in the previous election is independent of other Americans. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

42% of Americans voted in the previous national election.

This means that p = 0.42

Three Americans are randomly selected

This means that n = 3

What is the probability that none of them voted in the last election

This is P(X = 0).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{3,0}.(0.42)^{0}.(0.58)^{3} = 0.1951

19.51% probability that none of them voted in the last election

6 0
2 years ago
Complete the steps to find all zeroes of the function f(x) = x4 − 4x3 − 4x2 + 36x − 45. This function has roots.
xxTIMURxx [149]
Steps?

A graph shows zeros to be ±3. Factoring those out leaves the quadratic
  (x-2)² +1
which has complex roots 2±i.

The function has roots -3, 3, 2-i, 2+i.

7 0
3 years ago
Read 2 more answers
I need help plzzzzzzzzzzzz. I need you guys to show work too
Softa [21]

Answer:

22

Step-by-step explanation:

<h2>—Math</h2>

√(x+3) –4 = 1

√(x+3) = 1 +4

√(x+3) = 5

x + 3 = 5²

x = 25 –3

x = 22

6 0
3 years ago
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