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11Alexandr11 [23.1K]
2 years ago
5

Evaluate the expression 15x + 4 for x = -1 1/2​

Mathematics
1 answer:
olga_2 [115]2 years ago
5 0

Answer:

18.5

Step-by-step explanation:

First we plug in the number

-1 1/2 is the same as -1.5

Plugging this in we will have:

15(-1.5) + 4 =

-22.5 + 4 =

-18.5

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3/4x + 6 = 15 what is x
Maslowich
<span>(3/4)*x-6 = 15 // - 15

(3/4)*x-15-6 = 0

3/4*x-21 = 0 // + 21

3/4*x = 21 // : 3/4

x = 21/3/4

x = 28</span>
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3 years ago
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3 years ago
If 8% of all cell phones are defective, and you have a random sample group of 100 Samsung Galaxy Vills,
Sati [7]

Answer:

Mean = 8

Variance = 7.36

Standard Deviation = 2.7129

Step-by-step explanation:

This is a binomial distribution with parameters, n and p.

Where

n is sample size (given as 100)

p is the probability of success, or probability of defective (given as 8% or 0.08)

The mean, variance, standard deviation formula for binomial distribution is shown below:

Mean = np

Variance = npq

Standard Deviation = \sqrt{npq}

Where q would be probability of failure, or "1 - p"

Thus,

n = 100

p = 0.08

q = 1 - 0.08 = 0.92

SO, we have:

Mean = np=100*0.08=8

Variance = npq=100*0.08*0.92 = 7.36

Standard Deviation = \sqrt{npq}=\sqrt{7.36}=2.7129

5 0
3 years ago
Amelia made 3 1/3 pounds of trail mix. If she puts 2/3 of a pound into each bag, how many bags can Amelia fill? Write your answe
Neporo4naja [7]

Answer:

6

Step-by-step explanation:

Because ⅔ goes into 3 ⅓ 6 times.

7 0
3 years ago
If g(x) = 3x + 1, evaluate g(-2).
zloy xaker [14]
G(x) = 3x + 1, evaluate g(-2).

Simply plug in (- 3) in g(x)

g(-2) = 3(-2) + 1

g(-2) = - 6 +1

g(-2) = - 5

4 0
3 years ago
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