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Tutors Answer Your Questions about Systems-of-equations (FREE)
Question 45147: -find the mass and radius of three of the nine planets in our solar system. Be sure that the masses are expressed in kilograms and the radii are expressed in meters.
-Using your data, calculate the gravitational acceleration on each of the three planets you selected. Note: With the masses measured in kilograms and the radii in meters, the units of gravitational acceleration would turn out to be meters per squared seconds.
-Use the gravitational accelerations that you calculated in Step 2 to find the period of a 2 meter long simple pendulum on each of the three planets. Note: The length of a simple pendulum is normally expressed in meters, so it is sufficient to replace L with the number 2 in the period expression
Click here to see answer by adamchapman(301)   |
Question 45989: How do you solve 5x^3+54x^2-72x for x? I would like you to show each step and explain why you did each step. And I would like you to use factoring to solve the equation. Thank you so much.
Click here to see answer by Nate(3495) |
Question 46811This question is from textbook 
: I hope this is the right place for this: Translate the following statement into an algebraic equation. Let x represent the number.
1 more than a number is 7
Thanx!This question is from textbook
Click here to see answer by tutorcecilia(2042) |
Question 46930This question is from textbook College Algebra
: Question #80: The altitude of an isosceles triangle drawn to its base is 3 centimeters, and its perimeter is 18 centimeters. Find the length of its base.
I wrote down the equation for the area of a triangle, but I don't recall from College Math how to find a triangle's perimeter. Area of a triangle: A=1/2(B)(H). I'm not sure how to solve this problem. Please help!This question is from textbook College Algebra
Click here to see answer by checkley71(8405) |
Question 46992This question is from textbook CLEP Official Study Guide
: 1. What is the determinant of the matrix [-1 2][1 3]. The [1 3] is directly under the [-1 2] in the problem. I have no idea where to begin to solve this problem.
2. The below table gives some of the values of a 5th degree polynominal p(x). Based on the values shown, what it the minimum number of real roots fot the equation p(x)=0
x 0 1 2 3 4 5 6 7
p(x) -30 22 110 150 34 -130 222 2,350
I have no idea how to begin to solve this problem. This question is from textbook CLEP Official Study Guide
Click here to see answer by venugopalramana(3286)  |
Question 47190: Hello,
How do I solve this by the system by addition. I'm not sure how to go about it.
This is what I get,but my friend says it's wrong. I'm loss fro this point on.
5x – 3y = 13
4x – 3y = 11
+_______________
9x - 6y= 11
Click here to see answer by adamchapman(301) |
Question 48916: The product of twice a number increased by 5 and the number squared is 18.
This has to be written out in an equation and then solved. So far I have...
(2n+5)[(n)(n)]=18
then I can get it as simplified as
2(n)(n)(n)+5(n)(n)=18
is this right? (sorry I can't get my computer to type powers)
PLEASE HELP ME!
Click here to see answer by checkley71(8405) |
Question 51989This question is from textbook Agebra
: A factory hired 130 new workers during a year in which 27 workers retired and 59 left for other reasons. If there were 498 workers at the end of the year, how many were there at the beginning of the year?This question is from textbook Agebra
Click here to see answer by checkley71(8405) |
Question 52511: Please help!!!, I don't understand what the instructor is asking for.
What is the formula for measuring sound.
Pick a specific sound, give the decibels of the sound, and explain what this measurement means
Click here to see answer by Nate(3495) |
Question 52878This question is from textbook College Algebra
: An open-top box is to be constructed from a 6 by 8 foot rectangular cardboard by cutting out equal squares at each corner and then folding up the flaps. Let x denote the length of each side of the square to be cut out. Find the function V that represents the volume of the box in terms of x. Graph this function and show the graph over the valid range of the variable x. Using the graph, what is the value of x that will produce the maximum volume?
I need help with this ASAP! Thank you so much!This question is from textbook College Algebra
Click here to see answer by venugopalramana(3286) |
Question 53060: I have a question which states to find all the real solutions. If any of each equation where they appear a,b,m and n are positive constants
square root of x + 1 + square root of x-1 = square root of 2x+1
Click here to see answer by Nate(3495) |
Question 53305: For a fixed rate, a fixed principal amount, and a fixed compounding cycle, the return is an exponential function of time. Using the formula,A= P (1+ r/n)^nt, let r = 10%, P = 1, and n = 1 and give the coordinates (t, A) for the points where t = 0, 1, 2, 3, 4. Round the A value to the tenth's place.
Click here to see answer by Nate(3495) |
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