|
Tutors Answer Your Questions about Evaluation Word Problems (FREE)
Question 1075695: Need some help solving this word problem! --
Forces with magnitudes of 250 lbs and 130 lbs act as an object at angles of 45° and -60°, with the positive x-axis. What is the direction & magnitude of the resultant from these two forces? Thanks a lot.
Click here to see answer by Fombitz(32388)   |
Question 1075983: Can somebody fill me in a bit on Euler’s formula?
e^(a + bi) = e^a*(cos b + i sin b) -- Euler's Formula.
His equation gives rise to e^(πi) + 1 = 0.
'0, 1,π , e, and i' Are all in one equation.
Could you explain how Euler’s formula could be applied to derive this equation? Thank you very much.
Click here to see answer by Edwin McCravy(20054)  |
Question 1075983: Can somebody fill me in a bit on Euler’s formula?
e^(a + bi) = e^a*(cos b + i sin b) -- Euler's Formula.
His equation gives rise to e^(πi) + 1 = 0.
'0, 1,π , e, and i' Are all in one equation.
Could you explain how Euler’s formula could be applied to derive this equation? Thank you very much.
Click here to see answer by Fombitz(32388) |
Question 1075983: Can somebody fill me in a bit on Euler’s formula?
e^(a + bi) = e^a*(cos b + i sin b) -- Euler's Formula.
His equation gives rise to e^(πi) + 1 = 0.
'0, 1,π , e, and i' Are all in one equation.
Could you explain how Euler’s formula could be applied to derive this equation? Thank you very much.
Click here to see answer by math_helper(2461)  |
Question 1077685: Recall that two angles are complementary if the sum of their measures is 90°. Find the measures of two complementary angles if one angle is twice the other.
All I have been able to come up with is: x+y=90. And x=2y. However it doesn't make sense. Please help!
Click here to see answer by Alan3354(69443)  |
Question 1077750: The perimeter of a rectangle is 84 feet. If the length was increased by 3 feet and the width was doubled, the perimeter would be 120 feet. What are the dimensions of the rectangle?
I spent hours on this problem please help!
Click here to see answer by Boreal(15235)  |
Question 1077750: The perimeter of a rectangle is 84 feet. If the length was increased by 3 feet and the width was doubled, the perimeter would be 120 feet. What are the dimensions of the rectangle?
I spent hours on this problem please help!
Click here to see answer by amfagge92(93)  |
Question 1077485: A furniture shop refinishes tables. Employees use two methods to refinish tables. Method I takes
0.5
hours and the material costs
$9
.
Method II takes
2.0 hours, and the material costs
$7
.
Next week, they plan to spend
99 hours in labor and
$564 in material for refinishing tables. How many tables should they plan to refinish with each method? (Round to two decimal places if necessary
Click here to see answer by jorel1380(3719)  |
Question 1077806: Juan had $21400 and chose to split the money into two different mutual funds. During the first year, Fund A earned 7% interest and Fund B earned 4% interest. If he received a total of $1216 in interest, how much had he invested into each account?
Juan invested $ into Fund A.
Juan invested $ into Fund B.
Click here to see answer by Boreal(15235) |
Question 1079024: In a factory there are three
independently operating machines, each with a
probability of 0.6 of being working, find the probability that:
a. All the machines are working
b. None of the machines are working
c. Only one machine is working
Click here to see answer by rothauserc(4718)  |
Question 1079422: An initial amount of £6000 is your savings account. The bank is giving you interest at the rate of 10% per year (annum). After n years the amount of money stored in your bank account will be £6000*(1.10)^n, where n is the
number of years. Evaluate after how many years you will
have £22000 deposited in your bank account?
Click here to see answer by Boreal(15235) |
Question 1080281: Jessica is making rice crispy squares. The mixture will have 4.5 times as many kilograms of rice crispies as of marshmallows. The marshmallows cost $5/kg and rice crispies $10/kg. If Jessica has $100 to spend, what mass of marshmallows and rice crispies should she buy?
Note: Please include a "Let's statement(s)", and equations. Thank you :)
Click here to see answer by josmiceli(19441)  |
Question 1084267: A store has 39 qt of milk, some in pint cartons and some in quart cartons. There are six times as many quart cartons as pint cartons. How many quart cartons are there? (Hint:
1 qt 2 pt)
My solution is:
pint cartons = X
Quart cartons = 6x
x+6x=78
7x = 78 and i got lost... Could you please help me with a step-by-step algorithm? Thank you
Click here to see answer by ikleyn(52771)  |
Question 1085509: A new computer can complete a complex biochemistry calculation in 7 hours less than an older-model computer. Working together, the new computer and the old computer can complete the calculation in 17 hours. How long would it take the new computer to complete the calculation by itself? Round to the nearest tenth of an hour.
Click here to see answer by jorel1380(3719) |
Question 1087648: Can you please help me solve this word problem..below..
The measure of hardest angle of a triangle is 12% less than the sum of the measure of the other two .The smallest angle angle measure of the angles?
Thank you!..
Click here to see answer by ikleyn(52771) |
Question 1087650: Can you please help me solve this word problem..below..
The measure of hardest angle of a triangle is 12% less than the sum of the measure of the other two .The smallest angle angle measure 58 less than the largest.Find the measure of the angles??
Thank you!..
Click here to see answer by ikleyn(52771) |
Question 1089139: In your own words, define a growth mindset. Reflect on your experiences and list one or two examples of when you have approached a topic (like math) with a fixed mindset. How did that mindset affect your performance?
Click here to see answer by ikleyn(52771) |
Question 1089145: A piggy bank contains 36 coins that consists of dimes and quarters totaling $5.85. How many quarters are in the piggy bank? In your final answer, include all necessary calculations.
Let x be dimes, and y be quarters. Then:
x + y =36
.1x + .25y = 5.86
I can not figure what to do next What ever I tried diies not work out
Click here to see answer by ikleyn(52771) |
Question 1089390: Skidding Car: The force needed to keep a car from skidding on a curve varies inversely as the radius r of the curve and jointly as the weight of the car and the square of the speed. It takes 3000 lb of force to keep a 200 lb car from skidding on a curve of radius 500 ft at 30 mph. What force will keep the same car from skidding on a curve of radius 800 ft at 60 mph?
Click here to see answer by KMST(5328)  |
Question 1089393: Solve the modeling problem. Cell Phone Charges: A cell phone service provides communication between two cities. If x represents the number of minutes for the call, where x > 0 , then the function f(x) = 0.75[x] + 1.50 gives the total cost of the call in dollars. Find the cost of a 7.5 minute call.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1089532: The measure of malnutrition called pelisi differs directly as cube root a person's weight in grams and inversely as person's sitting height in centimeters. The person with the pelidisi below 100 is considered to be undernourished while the pelidisi greater than100 indicates overfeeding. The person who weights 48.200g with a sitting height of 78.7 cm has the pelidisi of 100. Determine pelidisi(to nearest whole number) of the person whose weight is given as 54,688 g and whose sitting height is given 72.6 cm. is this individual undernourished or overfed?
The pelidsi is _____
Round to the nearest integer as needed.
Click here to see answer by jorel1380(3719) |
Question 1090059: Dr. Aberli recently found 400 pounds of the rare substance, stutzium, in the tunnels under Atherton. He knows that this rare material has a half life of 60 years. Once there is only 10 pounds left, it will be safe for students to work with. How long will Dr. Aberli have to wait to use this material in the classroom? (round to the nearest year)
Click here to see answer by jorel1380(3719) |
|
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915
|
| |
