Tutors Answer Your Questions about Equations (FREE)
Question 905048: I was given this problem:
(x+3)
----- = 21, y=3
y
Can you show me the steps to solve this, I thought I knew however my answers did not match the multiply choice options, so I must be doing something wrong.
These are the steps I took:
Plug 3 into the y denominator
Multiply both sides by three: this leads to the y denominator being eliminated the numerator becoming 3x+9, and the 21 becoming 63. 3x+9=63
Subtract the 9 from both sides: 3x=54
Divide both sides by 3: x=18.
18 wasn't an option so where am I going wrong in this problem?
Thanks for you help!
Click here to see answer by richwmiller(17219)  |
Question 905086: Select the correct reasons for statements 1 and 3 to complete the proof.
Prove: 3x + 2 x 11 = 25x.
1. 3x + 2 x 11 = 3x + 2 11 x 1. ?
2. 3x + 2 x 11 = 3x + 22x 2. Multiplication
3. 3x + 2 x 11 = 25x 3. ?
A.
Commutative Property of Addition, Addition
B.
Commutative Property of Multiplication, Addition
C.
Associative Property of Multiplication, Addition
D.
Commutative Property of Multiplication, Multiplication
Click here to see answer by jim_thompson5910(35256) |
Question 905279: 'Paula mixed two cups of sunflower seeds and three cups of raisins to make a snack for a hike. She figured that the mixture would provide her with 2,900 calories of food energy. Find the number of calories per cup of raisins if it is 400 less than the number of calories per cup of sun flower seeds.'
Click here to see answer by josgarithmetic(39617) |
Question 905279: 'Paula mixed two cups of sunflower seeds and three cups of raisins to make a snack for a hike. She figured that the mixture would provide her with 2,900 calories of food energy. Find the number of calories per cup of raisins if it is 400 less than the number of calories per cup of sun flower seeds.'
Click here to see answer by richwmiller(17219)  |
Question 905639: Kate has some dimes and $15.75 in quarters. If she has $27.95 total, how many dimes does she have?
Would you take x+15.75=27.95. Then, subtract 15.75 from both sides then you get 12.35 and that would be your answer?
Click here to see answer by Alan3354(69443)  |
Question 905664: Biologists have noticed that the chirping of crickets of a certain species is related to temperature, and the relationship appears to be very nearly linear. A cricket produces 113 chirps per minute at 73 degrees Fahrenheit and 172 chirps per minute at 87 degrees Fahrenheit.
Find a linear equation that models the temperature T as a function of the number of chirps per minute N.
T(N)= ?
Click here to see answer by josmiceli(19441)  |
Question 906308: I am having trouble figuring out the steps of this equation. The question is,Find all real solutions of the equation. Check your solutions in the original equation.
49t^4 + 44t^2 − 5 = 0
I try to solve for t^2 and substitute it for x
49x^2+44x-5=0
(49x-5)(x+1)=0
49x-5=0-->x=5/49
x+1=0--> x=-1
Here is where I get lost
Click here to see answer by ewatrrr(24785)  |
Question 906325: I'm having trouble with this equation
Find all solutions of the equation algebraically. Check your solutions. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)
8x-4sqrt(x)-12=0
I have no idea what to do
Click here to see answer by Alan3354(69443)  |
Question 907343: a. Find all (real) solutions for x: x − √(6 − x) = 4. If you eliminate a solution, show or explain why.
b. Jill wants to make a substitution in the equation x^(1/3) 36 = 9x^(1/6)
in order to convert it to a quadratic
equation. Give the substitution (in the form t =
) and the resulting quadratic equation. Do not
solve.
c. After making the substitution u = x^4 in an equation, Jaime found the solutions u = 16 and
u = -4. Find the solution(s) for x.
Click here to see answer by Fombitz(32388)  |
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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, 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