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3 years ago

An extra-large pizza weighs 2 kilograms. How many grams does it weigh?

Mathematics

1 answer:

zepelin [54]3 years ago

4 0

2000 grams because 1 kilogram is equal to 1000 grams. Therefore 2 kilograms is equal to 2000 grams

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Answer -7 x (-9) = ? Thank You!

artcher [175]

-7 x (-9) = +63

because if we multiply negative by negative we obtain +

5 0

4 years ago

A new test to detect TB has been designed. It is estimated that 88% of people taking this test have the disease. The test detect

Elodia [21]

Answer:

Correct option: (a) 0.1452

Step-by-step explanation:

The new test designed for detecting TB is being analysed.

Denote the events as follows:

D = a person has the disease

X = the test is positive.

The information provided is:

$P(D)=0.88\\P(X|D)=0.97\\P(X^{c}|D^{c})=0.99$

Compute the probability that a person does not have the disease as follows:

$P(D^{c})=1-P(D)=1-0.88=0.12$

The probability of a person not having the disease is 0.12.

Compute the probability that a randomly selected person is tested negative but does have the disease as follows:

$P(X^{c}\cap D)=P(X^{c}|D)P(D)\\=[1-P(X|D)]\times P(D)\\=[1-0.97]\times 0.88\\=0.03\times 0.88\\=0.0264$

Compute the probability that a randomly selected person is tested negative but does not have the disease as follows:

$P(X^{c}\cap D^{c})=P(X^{c}|D^{c})P(D^{c})\\=[1-P(X|D)]\times{1- P(D)]\\=0.99\times 0.12\\=0.1188$

Compute the probability that a randomly selected person is tested negative as follows:

$P(X^{c})=P(X^{c}\cap D)+P(X^{c}\cap D^{c})$

$=0.0264+0.1188\\=0.1452$

Thus, the probability of the test indicating that the person does not have the disease is 0.1452.

4 0

3 years ago

What is slope between the points (-5,7) and (4,-8)?

WINSTONCH [101]

The slope can sometimes be called the gradient, and the equation for the gradient is (y2 - y1)/(x2 - x1). So therefore, you'd do: (-8 - 7)/(4 - -5) which is (-15)/9) which is -1 2/3 or -1.6 (recurring), which is your answer. I hope this helps! Let me know if I've confused you :)

3 0

4 years ago

All the number sets that apply to -4/5

Sophie [7]

-8/10,-12/15,-16/20,-20/25,-24/30,etc.

4 0

3 years ago

The first number is 4. A rule is multiply by 2 and then subtract 3. What are the fist 6 numbers in the pattern?

Komok [63]

I believe the answer would be: 4.7.9.11.13.15.17

3 0

3 years ago