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Tju [1.3M]
2 years ago
12

A local grocery store tested spinach samples for E coli bacteria using two different tests. The first test has a 94% probability

of giving accurate results, while the second test is accurate 89% of the time. A sample that contains E coli bacteria is tested.
The probability that both tests detect the bacteria is
%.
Mathematics
2 answers:
GuDViN [60]2 years ago
8 0

Answer:

83.66%

Step-by-step explanation:

pav-90 [236]2 years ago
4 0

Answer:

Probability of  the first test giving accurate results = 84%

Probability of the second test is accurate = 89%

Answer = 83.66%

Step-by-step explanation:

Got it right on edmentum

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Sam is packing gift boxes with fruit. For each apple he packs 3 plums and 5 oranges. If he puts 3 apples in a box, how many plum
Musya8 [376]
You can make an equation.

Let x=oranges
p=plums
n=apples

n= 3p + 5x

So basically we know 1 Apple means Sam will pack 3 plums and 5 oranges

To get 3n which means 3 apples we have to multiply the whole equation by 3


(n= 3p + 5x) x3


3n=9p+15x

So Sam will also put 9 plums and 15 oranges if he puts 3 apples in the box
7 0
2 years ago
Read 2 more answers
Nadia’s bookshelf contains 10 fiction books, two reference books, and five nonfiction books. What is the probability that she ra
pshichka [43]

Answer:

5/136

Step-by-step explanation:

Probability is the chance of an event happening.

Probability = (Favorable outcome)/(total outcome)

P(r and n) = 2/17 × 5/16

=(2 × 5)/(17 × 16)

= 10/272

= 5/136

7 0
2 years ago
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Alexis has a rectangular piece of red paper that is 4 cm wide its length is twice its width she Glooze a rectangular r Alexis ha
UNO [17]

Are you looking for the area or the perimeter?

Perimeter: 24

Area: 32

Hope this helped!

-TTL

5 0
2 years ago
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The graph of f(x) = StartRoot x EndRoot is reflected over the y-axis. Use the graphing calculator to graph this reflection. Whic
labwork [276]

Answer:

<em>(–81, 9), (–36, 6), (–1, 1) </em> are the correct three points.

Step-by-step explanation:

Given the function:

f(x) =\sqrt x

Please refer to the attached image.

The green line shows the graph of actual function.

It is reflected over y axis.

The reflected graph is shown in black color in attached image.

When reflected over y axis, the sign of variable x changes from Positive to Negative.

So, the resultant function becomes:

f(x)=\sqrt{-x}

i.e. we will have to give the values of x as negative now.

so, the options in which value of x is negative are the possible answers only.

The possible answers are:

(–81, 9), (–36, 6), (–1, 1) and

(–49, 7), (–18, 9), (–1, 1)

Now, we will check the square root function condition.

In the 2nd option, (–18, 9) does not satisfy the condition.

So, the correct answer is:

<em>(–81, 9), (–36, 6), (–1, 1)</em>

7 0
2 years ago
Law of sines: StartFraction sine (uppercase A) Over a EndFraction = StartFraction sine (uppercase B) Over b EndFraction = StartF
vladimir2022 [97]

Answer:

30°

Step-by-step explanation:

Law of Sines = \frac{a}{Sin A} = \frac{b}{Sin B} = \frac{c}{Sin C}

\frac{2}{Sin 30} = \frac{2}{Sin B}

\frac{2}{Sin 30} = \frac{2}{Sin 30}

Therefore, m∠B = 30°

Hope that's right and helps

6 0
2 years ago
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