im not exactly sure how to set up an equation for this. i'm not sure where to put x and how to write the equation.

im not exactly sure how to set up an equation for this. i'm not sure where to put x and how to write the equation.

If we have a linear equations n by m matrix A and a vector b ∈ R^m, to determine whether the set {x ∈ R^m : Ax = b} is empty or not.?

The Centers for Disease Control (CDC) estimates that 0.6% of Americans have AIDS. The HIV-1 tests correctly diagnose the presence of HIV in 95% of the persons who have it and correctly diagnose its...

pure acid is to be added to a 5% acid solution to obtain 95L of 60% solution what amount of each solution should be used? how many lit of 100% pure acid should be used to make the...

An unfair coin with Pr[H]=0.2 is flipped. If the flip results in heads, a student is selected at random from a class of 12 boys and 10 girls. Otherwise, a student from a different class containing...

The question is based on the binomial theorem. I understand how it works, but I don't know how to apply it like this.

a. Write and solve an equation to find how much you spend on each CD. Let pp represent the price you pay for each CD. b. The next day, the CDs are no longer one sale. You have $25....

I need help please I need this done soon. Thank you.

If A is directly proportional to C and B is directly proportional to C, prove that each of the following is directly proportional to C. a) A+B b) A–B c)√AB

David wishes to deposit $2000 in a bank for 5 years. Two banks caught his interests. SBD BANK -8% simple interest for 1st year -4% simple interest for subsequent years CBCO...

A fabric remant from a burial site has a Carbon-14 / Carbon 12 ratio of .721 of the original value. How old is the fabric in years?

a) Solve 3x2 + 7x – 6= 0 (I can do this) b) Hence state the positive value of y for which 3/y2 + 7/y – 6= 0. (I can't understand this...

Can you list examples using the unit circle thanks!

A cylindrical can has a base radius of 3.4 cm. It contains a certain amount of water such that when a sphere is placed inside the can, the water just covers the sphere. If the sphere fits...

The perimeter of a triangle is 10 (that is, a+x+(x+1)=10). Use this and the cosine law to solve for x. Round answers to 2 decimal places. Triangle: <BAC: 60degrees line...

triangle DEF and triangle QRS are right triangles. If Δ DEF is simular to Δ QRS, and m<EFD= 65°, which of the following angles also has a mesure of 65°?

The point P (1,-√3) is on the terminal side of an angle (theta) θ in standard position. P lies on a circle with center at the origin

ABC is a triangular plot of land in which ACB is a right angle. The length of AB is (2x+1)m, the length of AC is (x–1)m and the length of BC is (2x–5)m. a) Using Pythagoras...

A school conducted a survey to find out which games students enjoy watching the most. The table below contains the results of the survey. Grade Basketball Baseball Football Soccer Tennis...

In this unit, you looked at numerical measures for statistics, including measures of central tendency and distribution for one-dimensional data and correlations for two-dimensional data. You also...