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scoray [572]
4 years ago
12

HELP ME PLEASE QUICKLY FAST!

Mathematics
2 answers:
RoseWind [281]4 years ago
5 0
The answer is 13. You can find this out by using the PEMDAS method. (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction.)
sukhopar [10]4 years ago
4 0
10/2+4(3-1) goes to 10/2+4(2) then to 10/2+8 then to 5+8 then you get 13 as ur answer!!!
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Find the equation of a line that is parallel to the line -3x+2y=10 and goes through the point (0,7).
Delvig [45]

Answer:

  3x -2y = -14

Step-by-step explanation:

The parallel line will have a new constant that can be found by substituting the given point for x and y.

  -3x +2y = -3(0) +2(7) = 14

An equation for the parallel line is ...

  -3x +2y = 14

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In standard form, the leading coefficient is positive, so the standard form equation is ...

  3x -2y = -14

6 0
3 years ago
At a local University, it is reported that 81% of students own a wireless device. If 5 students are selected at random, what is
Sphinxa [80]

Answer:

34.87% probability that all 5 have a wireless device

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they own a wireless device, or they do not. The probability of a student owning a wireless device is independent from other students. 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.

81% of students own a wireless device.

This means that p = 0.81

If 5 students are selected at random, what is the probability that all 5 have a wireless device?

This is P(X = 5) when n = 5. So

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

P(X = 5) = C_{5,5}.(0.81)^{5}.(0.19)^{0} = 0.3487

34.87% probability that all 5 have a wireless device

5 0
3 years ago
Kesha's brother Samuel also has a bank account. At the start of the week, he added $85 in the account. On Tuesday, he added mone
Lera25 [3.4K]

Answer:

85

Step-by-step explanation:

5 0
3 years ago
In the coordinate plane, the point X(-4, 0) is translated to the point X'(1, -3). Under the same translation, the points
topjm [15]

sorry i don't know the answer

6 0
3 years ago
48/root 3 + 45/root 3​
faust18 [17]

Answer:

31√3

Step-by-step explanation:

48√3 + 45/√3 since the base is same we can add the terms up 93√3

➡ 93/√3 × √3/√3 = 93√3/3 ➡ 31√3

6 0
4 years ago
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