VA 3.9 Hmwk- Modeling Using Varia X *Homework Help - Q&A from Onl x + X -) C A webassign.net/web/Student/Assignment-Responses/last?dep=27051544 2. [0/1 Points] DETAILS PREVIOUS ANSWERS OSPRECALC1 3.9.615. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Write an equation describing the relationship of the given variables. y varies directly as the cube of x and when x = 2, y = 96. X Recall the general form for direct variation, y = kxo. What value of n does the relationship require? How can the values of x and y be used to solve for the constant of variation k? Additional Materials eBook Direct Variation Direct and Inverse Variation 3. [0/1 Points] DETAILS PREVIOUS ANSWERS OSPRECALC1 3.9.622. MY NOTES ASK YOUR TEACHER PRA calcPad + Operations Write an equation describing the relationship of the given variables. Functions X y varies inversely as the square root of x and when x = 16, y = 6. Symbols Relations X Sets Recall the general form for inverse variation, y = - What value of n does the relationship require? How can the values of x and y be used to solve for the constant VO I! Vectors Trig Additional Materials Greek eBook Help O 4:45 PM Type here to search m 78"F Partly sunny ^ DO (7 () 10/10/2021VA 3.9 Hmwk- Modeling Using Varia X Homework Help - Q&LA from Onl x + X C A webassign.net/web/Student/Assignment-Responses/last?dep=27051544 4. [-/1 Points] DETAILS OSPRECALC1 3.9.623. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Write an equation describing the relationship of the given variables. y varies inversely as the cube root of x and when x = 27, y = 5. Additional Materials eBook Inverse Variation Direct and Inverse Variation 5. [-/1 Points] DETAILS OSPRECALC1 3.9.627. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Write an equation describing the relationship of the given variables. y varies jointly as x and the square root of z and when x = 2 and z = 16, then y = 40. Additional Materials eBook 4:45 PM Type here to search O 78"F Partly sunny ~ 9 0 3 /() 10/10/2021 FAVA 3.9 Hmwk- Modeling Using Varia X Homework Help - Q&LA from Onl x + X > C A webassign.net/web/Student/Assignment-Responses/last?dep=27051544 . . . 6. [-/1 Points] DETAILS OSPRECALC1 3.9.628. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Write an equation describing the relationship of the given variables. y varies jointly as the square of x, the cube of z, and the square root of w. When x = 1, z = 2, and w = 9, then y = 120. Additional Materials eBook 7. [-/1 Points] DETAILS OSPRECALC1 3.9.633. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the given information to find the unknown value. y varies directly as the square of x. When x = 4, then y = 96. Find y when x = 7. y = Additional Materials eBook Direct Variation Direct and Inverse Variation Example Video O 4:45 PM Type here to search 78F Partly sunny ^ D ( $3(7() 10/10/2021VA 3.9 Hmwk- Modeling Using Varia X Homework Help - Q&A from Onl x + X -> C A webassign.net/web/Student/Assignment-Responses/last?dep=27051544 . . . 8. [-/1 Points] DETAILS OSPRECALC1 3.9.636. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the given information to find the unknown value. y varies directly as the cube root of x. When x = 64, then y = 12. Find y when x = 1,000. y = Additional Materials eBook Direct Variation Direct and Inverse Variation Learn by Example Example Video 9. [-/1 Points] DETAILS OSPRECALC1 3.9.637. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the given information to find the unknown value. y varies inversely with x. When x = 4, then y = 9. Find y when x = 1. y = Additional Materials eBook El Invarea Variation 4:45 PM Type here to search O 78F Partly sunny ~ 9 0 (7() 10/10/2021VA 3.9 Hmwk- Modeling Using Varia X *Homework Help - Q&A from Onl x + X C A webassign.net/web/Student/Assignment-Responses/last?dep=27051544 10. [-/1 Points] DETAILS OSPRECALC1 3.9.640. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the given information to find the unknown value. y varies inversely with the square root of x. When x = 49, then y = 8. Find y when x = 16. y = Additional Materials eBook Inverse Variation Direct and Inverse Variation Example Video 11. [-/1 Points] DETAILS OSPRECALC1 3.9.645. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the given information to find the unknown value. y varies jointly as the square of x and the square root of z. When x = 2 and z = 9, then y = 36. Find y when x = 6 and z = 16. y = Additional Materials deBook Example Video 4:45 PM Type here to search O m 78F Partly sunny ~ 9 0 (() 10/10/2021VA 3.9 Hmwk- Modeling Using Varia X Homework Help - Q&A from Onl x + X > C A webassign.net/web/Student/Assignment-Responses/last?dep=27051544 FA . . . 12. [-/1 Points] DETAILS OSPRECALC1 3.9.648. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the given information to find the unknown value. y varies jointly as z and the square of x and inversely as t and the square root of w. When z = 7, x = 3, t = 7, and w = 81, then y = 1. Find y when z = 3, x = 4, t = 7, and w = 144. y = Additional Materials eBook Learn by Example Example Video 13. [-/1 Points] DETAILS OSPRECALC1 3.9.650. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use a calculator to graph the equation implied by the given variation. y varies directly as the cube of x and when x = 7, y = 49. y 6 4:45 PM Type here to search O 78OF Partly sunny ~ D ( $3 (7() 10/10/2021VA 3.9 Hmwk- Modeling Using Varia X Homework Help - Q&A from Onl x + X > C A webassign.net/web/Student/Assignment-Responses/submit?dep=27051544&tags=autosave#question3272081_13 . . . 15. [-/1 Points] DETAILS OSPRECALC1 3.9.659-660.WA.TUT. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Hooke's law relates to the motion of a spring. It states that F = -kx, where x is the displacement of the spring's end from equilibrium, F is the force used to displace the spring, and k is the spring constant. Suppose a force of 70 pounds displaces a spring 6 inches. Find the force required to stretch the spring 5 inches. (Round your answer to the nearest tenth of a pound.) F = ( Tutorial 16. [-/1 Points] DETAILS OSPRECALC1 3.9.661-662A.WA.TUT. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The pitch of a musical tone varies inversely as its wavelength. Suppose that one tone has a pitch of 440 vibrations per second and a wavelength of 2.8 feet. Find the wavelength of a second tone that has a pitch of 220 vibrations per second. ft (123 Tutorial 17. [-/1 Points] DETAILS OSPRECALC1 3.9.661-662B.WA.TUT. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The volume of a gas varies inversely as the pressure on it. If the volume is 300 cm under a pressure of 46 units, what is the volume under a pressure of 20 units? cm3 23 Tutorial 4:45 PM Type here to search O 78.F Partly sunny ~ D ( $3 (74) 10/10/2021(- -) e i webassignne'tiwebfsmdenUAssignmentResponsesfsubmit?dep:27051Eddttags:autosaveffquestion3272tltltj3 *- . E ASK YOUR TEACHER PRACTICE ANOTHER The force exerted by tile wind on a plane surface varies jointly with the square of the velocity of the wind and with the am of tine plane surface. If tine area of the surface is 30 square feet surface and the wind velocity is 30 miles per hour, tine resulting force is 10 pounds. Find the force, F, on a surface of 75 square feet with a velocity of 40 miles per hour. (Round your OSPRECALC1 3.9.666. 13. [11 Points] Use the given information to answer the question. answer to two decimal places.) I33 eBook I33 Learn by Example 19. [11 Points] OSPRECALC1 3.9.667. ASK YOURTEACHER PRACTICE ANOTHER Use the given information to answer the question. The horsepower (hp) thata shaft: can safely transmit varies jointly with its speed (in revolutions per minute (rpm)) and the cube of the diameter. If the shaft of a certain material 3 inches in diameter can transmit 45 hp at 120 rpm, what must the diameter, d, be in order to transmit 60 hp at 150 rpm? (Round your answer to two decimal places.)