Q3. Prove or disprove: If A is invertible, then A'A is positive definite.

Q: 7- 7b <-42 or 4 + b < 10

A: Given : 7 - 7b ≤ -42 or 4 + b ≤ 10    To find : Solution of given expression and graph on number…

Q: The cost CC (in dollars) of making a square window with a side length of nn inches is represented by…

A:

Q: The area of a rectangle with the length of 12 cm and a height of 17 cm is _cm^2 enter a number…

A:

Q: solve 5x^3-12x^2\le 11x-6 use interval chart

A: To solve the inequality using interval chart, rewrite the inequality of the form fx≤0. Factorize the…

Q: Which equation has two real solutions? X^2=-100 5x^2=1 6x^2+17=11 7(x^2+6)=4

A: The given equation is x2=-100. The square root of any negative number is an imaginary number.…

Q: What is the solution to: -2x^3+7=135

A:

Q: -3x <-15 or x-9 <-12

A:

Q: 3+3区

A: Use substitution

Q: FACTOPRISE x^2+15x+54

A: Factorize  x2+15x+54

Q: Solve quadratic expression by factoring x^2+9x=-8

A:

Q: Write all solutions to x^2 = -100

A: x^2=-100 x=+-sqrt(-100) x=+-10sqrt(-1) we know that i=sqrt(-1) then value of x given by- x=10i and…

Q: Solve 6x^2+7x=20

A:

Q: Solve by completing the square  100x^2+50x+3=0

A:

Q: What is the solution set for a^2+9a+18=0?

A:

Q: solve         4x^2=-10x-1

A: Add 10x and 1.Compare with ax^2+bx+c=0 to find a,b,c

Q: A video cassette tape has a running time of 2 hours while at standard speed, 5 hours while at…

A: At standard speed, the running time is 2 hours. At long-play speed, the running time is 5 hours. At…

Q: Can you please solve number 73

A: Given value is,