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alisha [4.7K]
4 years ago
13

Please help me answer this math question!

Mathematics
1 answer:
Sveta_85 [38]4 years ago
5 0
The answer is B. If you would like an explanation just comment.
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A medical device company knows that 11% of patients experience injection-site reactions with the current needle. If 4 people rec
Orlov [11]

Answer:  0.6274

Step-by-step explanation:

Given: The proportion of patients experience injection-site reactions with the current needle : p=0.11

Sample size : n= 4

Let x be a binomial random variable that represents the people get an injection-site reaction.

Binomial probability formula: P(X=x)= ^nC_x p^x(1-p)^{n-x}

The required probability : P(x=0)

=\ ^4C_0(0.11)^0(1-0.11)^4\\\\=(1)(1)(0.89)^4\\\\=0.62742241\\\approx0.6274

Hence, the  probability that none of the 4 people get an injection-site reaction =  0.6274

6 0
3 years ago
Help please...no links...
Likurg_2 [28]

the answer is 3/4 or c.

Step-by-step explanation:

to find tan A you would use the equation of tan which is the value opposite the angle A which is 27 over the value adjacent to the angle which is 36.

3 0
3 years ago
Choose the mixed number that has not been reduced to simplest form.
mamaluj [8]

Hello there!

7 14/18 is the mixed number that has not been reduced to simplest form.

We can divide the numerator and denominator by 2 to reduce the fraction:

7 7/9

The answer is Option A. Hope this helps!

~Just a cheerful gal

#CarryOnLearning

SilentNature

4 0
3 years ago
Easy question please help
omeli [17]

Answer:

y = 3x - 2

Step-by-step explanation:

Required

The equation of the above linear function

From the table, we have:

(x_1,y_1) = (1,1)

(x_2,y_2) = (2,4)

Calculate slope (m)

m = \frac{y_2 -y_1}{x_2 -x_1}

m = \frac{4 -1}{2 -1}

m = \frac{3}{1}

m =3

The equation is:

y = m(x - x_1) + y_1

So, we have:

y = 3(x - 1) + 1

y = 3x - 3 + 1

y = 3x - 2

3 0
3 years ago
A washing machine sells for $201 after being discounted by 40 percent. What was the original price of the washing machine?
olga_2 [115]

Step-by-step explanation:

Let original price be x

Price after 40% discount is $201

Therefore

x × 40% = $201

x = 201 ÷ (40/100)

x = 502.5

Therefore, the original price is $502.5

Hope it helps :)

5 0
3 years ago
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