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3 years ago

If the test for a disease is accurate 45% of the time, How often will it come back negative if a patient has the disease?

Mathematics

1 answer:

Dafna1 [17]3 years ago

7 0

D. 55% of the time

45% of the time it will say positive

The other 55% of the time will come back negative.

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In 1970 there were 160 African American women in elected public office in the United States. By 1993 the number had increased to

timama [110]

Answer:

Average rate of change for the number of African American women who held office at any given time between 1970 & 1993 is 94.43.

Step-by-step explanation:

Here, according to the question:

Number of African American women in elected public office in the United States in the year 1970 = 160

Number of African American women in elected public office in the United States in the year 1993 = 2332

Now, the change in the number of elected women between 1970 & 1993

= Women elected in the year 1993 - Women elected in the year 1970

= 2332 - 160 = 2,172

or, the change in the number of elected women candidates between 1970 & 1993 is 2,172

Now, the difference in the time period is 1993 - 1970 = 23 years

So, $\textrm{The average rate of change} = \frac{\textrm{Total change in the quantity}}{\textrm{Time Interval}} \\=\frac{2172}{23} = 94.43$

Hence, the average rate of change for the number of African American women who held office at any given time between 1970 & 1993 is 94.43.

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3 years ago

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2. permeter = 8 and area = 4

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