3 years ago

Pls help it’s solve the expression it’s in the attatchmenr

Mathematics

1 answer:

kondor19780726 [428]3 years ago

3 0

Answer:

$-16+\sqrt{31}$

Step-by-step explanation:

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A new medical test has been designed to detect the presence of the mysterious brainlesserian disease. among those who have the d

Mumz [18]

Introduce the following notations of events:
A "The person has the disease"
B "The test is positive", C "the test is erroneous"
Our formula will be then:
$P(A)=P(A!B)P(B)+P(A!C)P(C)\\\text{Using the given value we get the formula:}\\0.18=P(A!B)0.9+0.06\times0.1\\\text{Solving the above equation for P(A!B) we get:}\\P(AB):0.19$
So the probability we are looking for is 0.19

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3 years ago

Bill spent a total of $35 at the grocery store. Of this amount, he spent $28 on fruit. What percentage of the total did he spend

Alenkinab [10]

Answer:

80%

Step-by-step explanation:

28/35 as a percent =

First, simplify the fraction.

28/35 = 4/5

Next, turn the simplified fraction into a denominator of 100.

4/5 = 80/100

80/100 = 80%

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3 years ago

What is the opposite of the opposite of -3/8

Komok [63]

The opposite of -3/8 is 3/8 and the opposite of that is -3/8.

The answer is -3/8

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3 years ago

HELP 1x3 divided by 56 then multiply that by 9

Sloan [31]

Answer:

0.48

Step-by-step explanation:

1x3/56 then multiply it by 9

1x3 is 3

3 x 9 = 27

27/56 this fraction cant be reduced so if you count it or put it in a calculator you'll get 0.482143

8 0

3 years ago

Can y’all please help?

alex41 [277]

Answer:

Step-by-step explanation:

You subtract 220 - 129 = 91 then divide by 13

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3 years ago