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Tutors Answer Your Questions about Radicals (FREE)
Question 186855: 1. (/ represents square root of)
Simplify: (/5-3)(/5-1)
2. Also How far above the water would a submarine periscope have to be to locae a ship 3.5 mi away? The equation for the distance in miles that the lookout can see is D=1.4/h, where h is the height in feet above the surface of the water.
Click here to see answer by vleith(1977)   |
Question 187713: f(x)=k2^x/12 can be used to determine the frequency, in cycles per second, of a musical note that is x half-steps above a note with frequency k.
The frequency of concert A for a trumpet is 440 cycles per second. Find the frequency of the A that is two octaves (24 half-steps) above concert A.
I tried to plug in the numbers but it does not seem right:
x=440(2)^24/12
x=440(2)^2
x=440(4)
x=1760
Click here to see answer by Alan3354(6097)  |
Question 188408: I have tried and tried these problems. I am in ninth grade and here is the question: when a skydiver jumped from an airplane, the time it takes to free fall a given distance can be estimated by the formula t= the square root of 2s/9.8, where t is in seconds and s is in meters. If Julie jumps from an airplane, how long will it take her to free fall 750 meters?
Click here to see answer by josmiceli(3013) |
Question 188410: i need help on this one too. to estimate how long a thunderstorm will last, meteorologists can use the formula: t=the square root of d to the third power divided by 216, where t is the time in hours and d is the diameter of the storm in miles
Click here to see answer by feliz1965(151) |
Question 188648: . Rationalize the denominator:
2____
√[6] – √[5]
It came out fuzzy I will retype it
2/sqrt[6]-[5]
. Simplify the rational expression:
x2 – 3x – 10 find the gcf of the polynomial
x2 – x – 20
. Simplify:
√[144x10y12z18]
Click here to see answer by Alan3354(6097) |
Question 188921: Find all real number solutions of the equation algebraically:
 -  = 2
Can someone show me how to solve the problem by first isolating on the left side of the equation and then squaring each side?
So the first step gives us...
= 2+
Now how do I square each side of this equation and find all solutions of x?
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 188921: Find all real number solutions of the equation algebraically:
- = 2
Can someone show me how to solve the problem by first isolating on the left side of the equation and then squaring each side?
So the first step gives us...
= 2+
Now how do I square each side of this equation and find all solutions of x?
Click here to see answer by Alan3354(6097) |
Question 189931: To determine the width of a pond, a surveyor locates two stakes at either end of the pond and uses instrumentation to place a third stake so that the distance across the pond is the length of a hypotenuse. If the third stake is 90m from one stake and 70m from the other, what is the distance across the pond?
Click here to see answer by stanbon(26297) |
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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, 3916..3960
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