$MathMaster logo$

MathMaster

Home
general
in a market the number of people buying product a is 18 the number of people buying product b is 20 if the number of peopl

Question

In a market, the number of people buying product A is 18, the number of people buying product B is 20. If the number of people buying product A and B is 9, how many people buy only product B?

155

likes

775 views

Answer to a math question In a market, the number of people buying product A is 18, the number of people buying product B is 20. If the number of people buying product A and B is 9, how many people buy only product B?

$Expert avatar$

4.9

84 Answers

Subtract the numbers: $ 20-9=11$

$=11$

Frequently asked questions (FAQs)

What are the coordinates of the center of a circle given its equation is (x-3)^2 + (y+2)^2 = 16?

+

What is the value of f(x) = 2x^2 - 5x + 1 when x = 3?

+

What is the graph of the logarithmic function f(x) = log(base 2) (x+3)?

+

New questions in Mathematics

a to the power of 2 minus 16 over a plus 4, what is the result?

two particles start at the origin and move along the x axis. for 0 <= t <= 10, their respective position functions are given by x1 = cos(t) and x2 = (e^-3t) + 1. for how many values of t do the particles have the same velocity?

Find the equation of the normal to the curve y=x²+4x-3 at point(1,2)

Determine the correct value: A company knows that invoices pending collection have a normal distribution with a mean of $1.65 million, with a standard deviation of $0.2 million, then: The probability that an invoice pending collection has an amount that is within more than 2 deviations below the mean, is:

I) Find the directional derivative of 𝑓(𝑥, 𝑦) = 𝑥 sin 𝑦 at (1,0) in the direction of the unit vector that make an angle of 𝜋/4 with positive 𝑥-axis.

Determine the equations of the lines that pass through the following points P1 (2;-1) and p2 (4;-1)

Find the root of x^4-10x^ 5=0 using Newton's method, with a precision of the smallest positive root.

Suppose 50% of the doctors and hospital are surgeons if a sample of 576 doctors is selected what is the probability that the sample proportion of surgeons will be greater than 55% round your answer to four decimal places

Task 1 angel has 3 quarters 3/8 of a tank of gasoline and Miguel 7/8, who has more gasoline? number line on number line

Suppose you have a sample of 100 values from a population with mean mu = 500 and standard deviation sigma = 80. Given that P(z < −1.25) = 0.10565 and P(z < 1.25) = 0.89435, the probability that the sample mean is in the interval (490, 510) is: A)78.87% B)89.44% C)10.57% D)68.27%

A person decides to invest money in fixed income securities to redeem it at the end of 3 years. In this way, you make monthly deposits of R$300.00 in the 1st year, R$400.00 in the 2nd year and R$500.00 in the 3rd year. Calculate the amount, knowing that compound interest is 0.6% per month for the entire period. The answer is 15,828.60

If A and B are any events, the property that is not always true is: a) 0 ≤ 𝑃(𝐴 ∩ 𝐵) ≤ 1 b) 𝑃(Ω) = 1 c) 𝑃(𝐵) = 1 − 𝑃(𝐵𝑐) d) 𝑃(∅) = 0 e) 𝑃(𝐴 ∪ 𝐵) = 𝑃(𝐴) + 𝑃(𝐵)

cube root of 56

7- A printing company found in its investigations that there were an average of 6 errors in 150-page prints. Based on this information, what is the probability of there being 48 errors in a 1200-page job?

The perimeter of a rectangular rug is 42 feet. The width is 9 feet. What is the length?

97,210 ➗ 82 division