Questions on Algebra: Equations answered by real tutors!

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Algebra: Equations

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Question 41890: Find the equation of the line containing the point (-1,3) and perpendicular to hte line 2x+4y=-1
Click here to see answer by fractalier(1804)

Question 41977: (a^3/b^2)^4=
Click here to see answer by fractalier(1804)

Question 41994This question is from textbook

: please help me asap
3. a. Using the formula C=5/9 (F-32), find the Celsius reading corresponding to 32 degrees F, the freezing point of water.
b. Normal body temp. is 98.6 degrees F. What is this in the Celsius scale?

This question is from textbook

Click here to see answer by checkley71(8405)

Question 42033: Determine which two equations represent parallel lines.
(a) y = x + 4
(b) y =x – 7
(c) y = 2x + 8
(d) y = 2x – 4

A) (c) and (d) B) (a) and (b) C) (b) and (c) D) (a) and (d)

Click here to see answer by checkley71(8405)

Question 42029: An employee who produces x units per hour earns an hourly wage of y = 0.35x + 11 (in dollars). Find the hourly wage for an employee who produces 2 units per hour.

A) $11.40 B) $12.10 C) $12.20 D) $11.70

Click here to see answer by checkley71(8405)

Question 42035: Find all real or imaginary solutions to the equation.

49x^2+9 = 42x
Click here to see answer by rapaljer(3620)

Question 42027: Find the slope of the line passing through the points (–8, –3) and (–2, 2).

A) -5/6 B) -6/5 C) 5/6 D) 6/5

Click here to see answer by rapaljer(3620)

Question 42028: Which of the ordered pairs
(3, 1), (0, –4), (–4, 0), (–3, –7)
are solutions for the equation x – y = 4?

A)
(3, 1) and (–4, 0)
C)
(0, –4), (–4, 0), and (–3, –7)

B)
(0, –4) and (–3, –7)
D)
(–4, 0) and (–3, –7)

Click here to see answer by rapaljer(3620)

Question 42043: One day, the temperature at 8:00 A.M. was 41°F, and by 1:00 P.M. the temperature was 61°F. What was the hourly rate of temperature change?

A) 6°F/h B) 3°F/h C) 4°F/h D) 5°F/h

Click here to see answer by rapaljer(3620)

Question 42041: Find the slope and y-intercept.
x = –8

A)
Slope: undefined; y-intercept: (0, –8)
C)
Slope: undefined; y-intercept: none

B)
Slope: 0; y-intercept: none
D)
Slope: 0; y-intercept: (0, –8)

Click here to see answer by rapaljer(3620)

Question 42042: A roof rises 9.75 ft over a horizontal distance of 17.24 ft. What is the slope of the roof to the nearest hundredth?

A) 1.91 B) 1.77 C) 0.65 D) 0.57

Click here to see answer by rapaljer(3620)

Question 42044: Find the slope of the line passing through the points (–9, –4) and (0, –4).

A) Undefined B) 0 C) 1 D) 9

Click here to see answer by nik_consult(24)

Question 42001: Please help me solve this equation.
-2x = 8?
a.x = 4
b.2x = -8
c.3x + 5 = 6x - 17
d.3x + = 12x + 17
Thank you
Click here to see answer by nik_consult(24)

Question 42061: X^1/m=Y^1/n=Z^1/p, xyz=1 then m+n+p=?
Click here to see answer by Fermat(127)

Question 42065: Write all the factors of 10.
Thanks from Precious.
Click here to see answer by Fermat(127)

Question 42059: 2x^3-10x^2=0
show work
Click here to see answer by Fermat(127)

Question 42010: please help me solve this problem asap
The cost of a long-distance telephone call is 80 cents for the first three minutes and 20 cents for each additional minute.
a. Write a formula for the total cost,T, of a phone call lasting m minutes.
b. Using the formula,find the total cost of an 8-minute call?
when you solve this can you make sure you explain how you get the answer because i really need to know how to do it when i take my test
Click here to see answer by josmiceli(3003)

Question 42058: 8x(4.7-x)=0
show work
Click here to see answer by fractalier(1804)

Question 42129This question is from textbook

: please help me solve this equation, i know this is an easy problem but i have to make sure its right.
.2r=68
i divided 68 by 2 and got 340 and that dosent seem right to meThis question is from textbook

Click here to see answer by fractalier(1804)

Question 42131: Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible.
(-1,3) and (4,-2)
Click here to see answer by tennislver116(2)

Question 42140: Compute the radius of a circle that has an area of 125cm2. Express your answer to the
nearest 10th of a cm (centimeter). You may use 3.14 as an approximation for P (pi). Do NOT enter the units.
THE ANSWER I GOT WAS 6.3 CM. BUT ASKS FOR ANSWER IN NEAREST 10TH OF A CM. IS MY ANSWER CORRECT, OR WOULD IT BE 63.0 CM.
Click here to see answer by abcdefg(37)

Question 42150: Solve the equation
(y - 7) - (y + 6) =9y
Click here to see answer by checkley71(8405)

Question 42150: Solve the equation
(y - 7) - (y + 6) =9y
Click here to see answer by fractalier(1804)

Question 42135: Write the equation of the line with given slope and y-intercept. Then graph each line using the slope and y-intercept.
slpoe: 3/4;y-intercept;(0,8)
Click here to see answer by checkley71(8405)

Question 42133: Floor plans for a building have the four corners of a room located at the points (2,3),(11,6),(-3,18) and (8,21). Determine whether the side through the points (2,3) and (11,6) is perpendicular to the side through the points (2,3) and (-2,18)
Click here to see answer by checkley71(8405)

Question 42154: Glenn can row 7 mph in still water. If it takes him the same time to row 6 miles downstream as it takes to row 4 miles upstream, what is the rate of the crrent?
Click here to see answer by Paul(988)

Question 42164: Write the equation of the line with given slope and y-intercept. Then graph each the line using the slope and y-intercept.
Click here to see answer by fractalier(1804)

Question 42163: Write the equation of the line with given slope and y-intercept. Then graph each the line using the slope and y-intercept.
Click here to see answer by fractalier(1804)

Question 42156This question is from textbook

: PLEASE HELP ME SOLVE THIS PROBLEM

WHAT IS 5 x 1/5n equal to?
can you explain to me how you get the answer This question is from textbook

Click here to see answer by fractalier(1804)

Question 42132: Rewrite into standard form (0,5), m=-3/5
Click here to see answer by fractalier(1804)

Question 42191: Driving down a moutain, Tom finds that he has descended 1800 ft. in elevation by the time he is 3.25 mi. horizontally away from the top of the mountain, find the slop of his descent to the nearest hundreth.
Click here to see answer by psbhowmick(456)

Question 42192: write the equation of the line with given slop and y-intercept. slope:-2 and y-intercept (0,4) is it y=-2x+4?
Click here to see answer by psbhowmick(456)

Question 42188: Are the pairs of lines parallel, perpendicular or neither.
Line 1 through (8,5) and (3,-2)
Line 2 through (-2,4) and (4,-1)
Click here to see answer by psbhowmick(456)

Question 42182: Explain in complete sentences why these two equations are equivalent.
a) x + 3 = 9
b) x - 3 = 3
Thank you for the help Precious
Click here to see answer by psbhowmick(456)

Question 42175: problem 24 in our self practice i need help

complete the ordered pairs so that each is a solution for the given equation
3x +4y =12 (0, ) , ( ,3 over 4) , ( ,0) , (8 over 3, )
Click here to see answer by psbhowmick(456)

Question 42134: Driving down a moutain, Tom finds that he has descended 1800 ft. in elevation by the time he is 3.25 mi. horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundreth.
Click here to see answer by fractalier(1804)

Question 42176: problem 24 in our self practice i need help

complete the ordered pairs so that each is a solution for the given equation
3x +4y =12 (0,) , (3 over 4) , (,0) , (8 over 3 , )
Click here to see answer by psbhowmick(456)

Question 42151: Solve the equation
-0.5(30,000) + 0.15p = 0.02(30,000 + p)
Click here to see answer by nik_consult(24)

Question 42278: please can you help me with this questions:
1.5y =30
y=
2.4c =20
c=
3. 2x+4=10
x=
4.5a-15=10
a=
5.3x-5=13
x=
6.18-3y=3
y=
7.4c+1=9
c=
8.5+2a=11
a=
Click here to see answer by psbhowmick(456)

Question 41709: Q- how many milligrams of ibuprofen remain in the blood 1 hour after 400mg has been swallowed n= milligrams t= hours

could someone pleas help me solve this
thanks mike
Click here to see answer by PaulAllen65270(19)

Question 42297: graph the following equation and give the points
y=-3x-2
Click here to see answer by Nate(3495)

Question 42153This question is from textbook

: please help me
n
-=8 i have the answer but how do i check it, i know this is easy but i need
4 help

This question is from textbook

Click here to see answer by Nate(3495)

Question 42298: In planning for a new item, a manufacturer assumes that the number of items produced x and the cost in dollrs c of producing these items are related by a linear equation. Projections are that 100 items will cost $10,000 to produce and that 300 items will cost $22,000 to produce. Find the equation that relates c and x.
Click here to see answer by fractalier(1804)

Question 42284:
Click here to see answer by PaulAllen65270(19)

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, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285