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zhannawk [14.2K]

3 years ago

7

A computer store sells 4 laptops for every 5 tablets that are sold. How many tablets should they expect to sell if they sell 200

laptops?

1 answer:

STatiana [176]3 years ago

4 0

Answer:

250 tablets

Step-by-step explanation:

just divide 200 by 4 and then multiply it by 5

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baye's theorem certain test for cholera gives 5% false positives, and 12% false negatives. If the test gives correct results 93%

jekas [21]

Answer:

The percentage of people having cholera is 89.19%.

Step-by-step explanation:

According to the Bayes' theorem the total probability of <em>A</em> is:

$P(A)=P(A|B)P(B)+P(A|B^{c})P(B^{c})$

Let <em>X</em> = a person has chorea and <em>Y</em> = the test is positive.

Given:

$P(X^{c}|Y)=0.05\\P(X|Y^{c})=0.12\\P(Y)=0.93$

The value of $P(X|Y)$ is:

$P(X|Y)=1-P(X^{c}|Y)=1-0.05=0.95$

Compute the value of P (X) as follows:

$P(X)=P(X|Y)P(Y)+P(X|Y^{c})P(Y^{c})\\=(0.95\times0.93)+(0.12\times(1-0.93))\\=0.8835+0.0084\\=0.8919$

The percentage of people suffering form cholera is, 0.8919 × 100 = 89.19%.

Thus, the percentage of people having cholera is 89.19%.

3 0

3 years ago

Which of the following is equivalent to (5 /k) + ((k + 3) /(k + 5)) ?

Mars2501 [29]

$\frac{5}{k}+\frac{k+3}{k+5}=\frac{5(k+5)}{k(k+5)}+\frac{k(k+3)}{k(k+5)}=\frac{5k+25+k^2+3k}{k(k+5)}=\frac{k^2+8k+25}{k(k+5)}\\\\Answer:E$

4 0

4 years ago

Read 2 more answers

suppose a figure is located in Quadrant l. which of the following sequences will result in an image that is located in Quadrant

Volgvan

Answer:

Step-by-step explanation:

A will.

Suppose the object is placed on (5,4)

If you rotate it 180o counterclockwise, the point will become (-5,-4) (both x and y will change signs.)

Moving one unit down will still leave you in quadrant III.

If you start in another quadrant, this answer will not be correct. If the point started out in quadrant 2, rotating it 180o counterclockwise will put you in quad 4. For example

Object Start: (-2,3) Starts in quad 2

Image found: (- -2, - 3) = (2, - 3) which is in quad 4.

4 0

3 years ago

If cos 67° is close to 25, which is closest to the length of NO?

marishachu [46]

60 centimeters your welcome

7 0

3 years ago

What is the rate of change

natima [27]

Answer:

$m=-4$

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Algebra I</u>

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from table.</em>

Point (-1, -1)

Point (0, -5)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>. Rate of change and slope are identical.

Substitute [SF]: $m=\frac{-5+1}{0+1}$
Add: $m=\frac{-4}{1}$
Divide: $m=-4$

6 0

3 years ago