Questions and answers by

Jon

Questions (757)

Find the exact solutions to 6x^2+x+4=0 by using the quadratic formula.x=-b+-sqrtb^2-4ac/2a -1+-sqrt1^2-4(6)(4)/2(6)
1. 6 answers
2. 819 views
Write a quadratic equation with -3/4 and 4 as its roots. Write the equation in form ax^2+bx+c=0, where a,b,and c are integers.(x
1. 2 answers
2. 2,371 views
Solve x^2-2x=24 by factoring.x^2-2x=24 x^2-2x-24=0 (x-2)^2 (x+6)=0 x=2 or x=-6 [-6,2](answer)
1. 5 answers
2. 619 views
Solve 2x^2=3x+2 by graphing. If excat roots cannot be found, state the consecutive integers between which the roots are located.
1. 2 answers
2. 566 views
The shape of a supporting arch can be modeled by h(x)= -0.03^2+3x, where h(x) represents the height of the arch and x represents
1. 1 answer
2. 1,281 views
Solve: sqrt3x+6 + 4 =< 7sqrt3x+6 + 4 =< 7 subtract 4 from both sides sqrt3x+6 =< 3 subtract 6 from both sides 3x/3x =< -3x/3x x
1. 1 answer
2. 499 views
Write the expression m^7/9 in radical form.9sqrt m^7 (answer)
1. 3 answers
2. 870 views
Use synthetic division to find (2x^3 - 5x^2 + 7x - 1)._1|2 -5 7 -1 2 -3 _____________ 2 -3 4|-1 2x^2 - 3x + 4(answer)
1. 4 answers
2. 476 views
Assume that no denominator equals 0.2+i/1-3i = 2+i/1-3i = (2+i/1-3i) * (1+3i/1+3i) = (2+3i^2)/(1-9i^2) = (2/1) - (1/3i) =
1. 1 answer
2. 413 views
Assume that no denominator equals 0.sqrt12 - sqrt18 + 3sqrt50 + sqrt75 = (sqrt2^2*3) - (sqrt2*3^2) + (3sqrt2*5^2) + (sqrt3*5^2)
1. 1 answer
2. 754 views
Assume that no denominator equals 0.sqrt 16x^2y^4 = sqrt (4x)y^2 = 4xy^2(answer)
1. 1 answer
2. 630 views
Assume that no denominator equals 0.(8y^3+27)/(2xy-10y+3x-15) I don't know how to solve this one.
1. 1 answer
2. 542 views
Assume that no denominator equals 0.(2x-3)^2 = 2x * 2x -3 * -3 = 4x-9(answer)
1. 4 answers
2. 604 views
Assume that no denominator equals 0.5x^3(7x)^2 = 5*7*7+x^3+x^2 = 245x^5(answer)
1. 1 answer
2. 478 views
Assume that no denomenator equals 0.(7x^2+3x-9)-(-x^2+8x-3) = 7x^2+3x-9+x^2-8x+3 = (7x^2+x^2)+(3x-8x)+(-9+3) = 8x^2+-5x+-6 =
1. 4 answers
2. 401 views
My book doesn't solve it like a linear equation, they solve it by using inverse matrices.Solve the matrix equation: |4
1. 1 answer
2. 824 views
what are Gregor Mednel's two greatest impacts on modern times.
1. 3 answers
2. 407 views
Solve the matrix equation:|4 -5||m|=|32| |1 2||n|=|-5| I don't get it
1. 3 answers
2. 443 views
Use Cramer's Rule to solve: 3x-5y=21 and 4x+2y=2.a=3, b=-5, c=4, d=2, e=21, f=2 21(2)-(-5)(2) divided by 3(2)-(-5)(4) =52/26=
1. 1 answer
2. 1,060 views
Evaluate:|12 5 -2||-3 0 1| |-5 4 2| It's going to be really confusing if I post my work. I got -127 from all the confusing
1. 1 answer
2. 548 views
Triangle DEF with vertices D(2,5),E(1,-6), and F(-5,3) is translated 3 units right and 2 units down. Find the coordinates of
1. 1 answer
2. 2,318 views
For questions 1 and 2, use the matrices below:A=[17 2 3] [11 4 -9] B=[10 6 -7] [-4 3 0] C=[1] [2] [-2] 1)Find A-B [17-10] [2-6]
1. 0 answers
2. 333 views
Describe the system 6x-2y=10 and 9x-3y=8 as consistent and independent, consistent and dependent, or inconsistent. Explain.Answe
1. 0 answers
2. 1,177 views
(This is the info for the question NOT the actual question)A furniture company displays bedroom sets which require 21 square
1. 2 answers
2. 1,156 views
Solve the system of equations:First:x+3y=5 Second:3x-y=5 multiply the second equation by 3 then add both equations(I know I have
1. 1 answer
2. 647 views
Solve the system of equations:First:4x-2y=2 Second:y=-4x-7 4x-2(-4x-7)=2 4x+8x+14=2 12x+14=2 subtract 14 from both sides x=-1
1. 1 answer
2. 402 views
Describe the system 6x-2y=10 and 9x-3y=8 as consistent and independent, consistent and dependent, or inconsistent. Explain.When
1. 0 answers
2. 867 views
Evaluate h(-2/3)if h(x)=[[x-2]].[[-2/3-2]] [[-2.67]] 2.67(answer)
1. 2 answers
2. 399 views
Write an equation for the line that passes through (0,7) and is perpendicular to the line whose equation is y=1/2x-1.y-y1=m(x-x1
1. 3 answers
2. 2,697 views
Write an equation in slope-intercept form for the line that passes through (3,5) and (-2,1).y2-y1/x2-x1 1-5/-2-3 -4/-5= slope
1. 3 answers
2. 684 views
If f(x)= 5x^2-4/x, findf(4)5(4)^2-4/4 5(16)-4/4 80-4/4 76/4 19(answer)
1. 1 answer
2. 902 views
( / means absolute value)Solve: 3+/2y-1/>=1. Graph the solution set on a number line. The number line I have is: -5 -4 -3 -2 -1
1. 3 answers
2. 671 views
( / means absolute value)Solve: 3+/2y-1/>=1. Graph the solution set on a number line. The number line I have is: -5 -4 -3 -2 -1
1. 1 answer
2. 702 views
1)Solve 3+2(1-x)>6 or 2x+14<=8. Graph the solution set on a number line.The number line I'm working with is: -4 -3 -2 -1 0 1
1. 2 answers
2. 662 views
Define a variable and write an inequality. Then solve. A local summer baseball team plays 20 games each season. So far, they
1. 2 answers
2. 1,096 views
2)Name the sets of numbers to which 457 belongs.(answer)natural,whole,integers,rational,reals My book says that every REAL
1. 2 answers
2. 1,555 views
1)The sum of a number and 17 more than twice the same number is 101. Find the number.17+2n=101 17-17 101-17 2n=84 n=42(answer)
1. 8 answers
2. 1,613 views
1)Find the value of 7+2(5-2*3^2)7+2(5-2*9) 7+2(5-18) 7+2(-13) 7+-26 (answer)-19 2)Name the sets of numbers to which 457 belongs.
1. 1 answer
2. 600 views
1)Find the standard deviation of the data set to the nearest tenth. (21,13,18,16,13,35,12,8,15)A)16.8 B)7.8 C)7.3 D)5.7 I chose
1. 1 answer
2. 860 views
1)A bookshelf holds 4 mysteries, 3 biograpghies, 1 book of poetry, and 2 reference books. If a book is selected at random from
1. 3 answers
2. 966 views
1)Find the sum of the infinite geometric series: 1 + 3/5 + 9/25 + ..., if it exists.A)5/3 B)5/2 C)3/5 D)does not exist I chose B
1. 2 answers
2. 1,189 views
1)If y varies inversely as x and y = 3, when x = 6. Find y when x = 36.A)72 B)2 C)1/2 D)18 I chose C y1/x2 = y2/x1 3/36 = y2/6
1. 1 answer
2. 625 views
Find the exact solution(s) of the system: x^2/4-y^2=1 and x=y^2+1A)(4,sqrt3),(4,-sqrt3),(-4,sqrt3),(-4,-sqrt3)
1. 0 answers
2. 660 views
Simplify: (4m/5n^2)-(n/2m)A)(8m^2-5n^3)/10n^2m B)(8m^2+5n^3)/10n^2m C)(4m-n)/(5n^2-2m) D)2/5n^2 I chose C 4m/5n^2 - n/2m
1. 1 answer
2. 604 views
Find the exact solution(s) of the system: x^2/4-y^2=1 and x=y^2+1A)(4,sqrt3),(4,-sqrt3),(-4,sqrt3),(-4,-sqrt3)
1. 3 answers
2. 765 views
Write an equation for an ellipse if the endpoints of the major axis are at (-8,1) and (8,1) and the endpoints of the minor axis
1. 1 answer
2. 491 views
If g(x)= 3x-8, find g[g(-4)].A)-68 B)4 C)-20 D)52 I got C 3x-8[3x-8(-4)] 3x-8+3x+32 thats all I have
1. 3 answers
2. 493 views
Which describes the number and type of roots of the equation x^2-625=0?A)1 real root, 1 imaginary root B)2 real roots, 2
1. 3 answers
2. 975 views
Find the exact solution to 6x^2+1=-8x by using the Quadratic Formula.A)-4+-(sqrt10) B)-4+-(sqrt22)/6 C)-2+-2(sqrt10)/3
1. 9 answers
2. 510 views
Solve 3x^2-8x+4=0 by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are
1. 4 answers
2. 685 views
Simplify: (1+i)/(2-i)A)(1/3)+(2/3i) B)(1/5)+(2/5i) C)(1/3)+(i) D)(1/5)+(3/5i) I have no clue please explain
1. 2 answers
2. 429 views
Solve 3x^2-8x+4=0 by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are
1. 0 answers
2. 566 views
Simplify: (1+i)/(2-i)A)(1/3)+(2/3i) B)(1/5)+(2/5i) C)(1/3)+(i) D)(1/5)+(3/5i) I have no clue
1. 0 answers
2. 370 views
Simplify y^2 + y - 20/y^2 - 2y - 8A)y - 5/y - 2 B)y + 5/y + 2 C)5/2 D)y - 10/y - 4 I chose A. I don't know how to do it.
1. 4 answers
2. 403 views
The vertices of ABC are A(-3,-4),B(-1,3),C(3,-2). The triangle is rotated 90 degrees counterclockwise. Use the rotation matrix
1. 1 answer
2. 719 views
Solve the matrix equation 2x + 5y = 1x + 3y = 0 for y. A)1 B)3 C)-3 D)-1 I chose D 2x + 5y = 1 y = 5 - 2x x + 3(5 - 2x)= 0 x +
1. 3 answers
2. 556 views
Find the coordinates of the vertices of the figures formed by y -< x + 2, x + 2 -< 6, and y >- -2A)(0,0),(2,4),(8,-2)
1. 3 answers
2. 607 views
if the average speed of ALL 5 coasters is no more than 91 mph then that last coaster has to be 100 mph to reach a speed of 91 on
1. 1 answer
2. 412 views
1)Find x in the solution of the system 3x+y=2 and 2x-3y=16A)2 B)-4 C)18/11 D)10/11 I chose A 3x+y=2 times 3 = 9x+3y=6 2x-3y=16
1. 3 answers
2. 1,836 views
Write an equation of the line that passes through (9,6) and is perpendicular to the line whose equation is y = -1/3x +7y-y1=m(x-
1. 3 answers
2. 1,442 views
The five fastest roller coasters in the world Fujiyama(Japan), Goliath(CA), Millenium Force(OH), Steel Dragon 2000(Japan), and
1. 3 answers
2. 700 views
Find the exact value of sinx/2 if cosx = 2/3 and 270 < x < 360.A)1/3 B)-1/3 C)sqrt 6/6 D)-sqrt 6/6 C, since I KNOW cosx is
1. 4 answers
2. 1,005 views
Find the exact value of sin2(theta) if cos(theta) = -sqrt 5/3 and 180 < theta < 270.A)-1/9 B)-4 sqrt 5/9 C)1/9 D)4 sqrt 5/9 B?
1. 5 answers
2. 2,098 views
Which expression equivalent to: cos(theta + pi/2).A)cos theta B)-cos theta C)sin theta D)-sin theta my book doesnt give examples
1. 3 answers
2. 2,102 views
2)Find the solution of sin2 theta = cos theta if 0 -< theta < 180A)30 degrees and 90 degrees B)30 degrees and 150 degrees C)30
1. 5 answers
2. 2,420 views
1)Find the exact value of cos 105 by using a half-angle formula.A)sqrt 2 - sqrt 3 /2 B)-sqrt 2 - sqrt 3 /2 C)-sqrt 2 + sqrt 3 /2
1. 7 answers
2. 3,655 views
Which expression is equivalent to tan theta-sec theta/sin theta?A)-cot theta B)cot theta C)tan theta-cot theta D)tan
1. 4 answers
2. 760 views
There are no typos and no work b/c I don't know how to do them. Thanks.1)Find cos theta if sin theta=3/5 and 90
1. 8 answers
2. 700 views
There are no typos and no work b/c I don't know how to do them. Thanks.1)Find cos theta if sin theta=3/5 and 90
1. 6 answers
2. 693 views
First of all I would like to thank everyone for helping me. The reason that I post my questions like I do is b/c they are
1. 2 answers
2. 644 views
1)Find cos theta if sin theta=3/5 and 90 degrees<theta<180 degrees.A)4/5 B)-4/5 C)square root of 34/5 D)-square root of 34/5 I
1. 5 answers
2. 1,013 views
1)Find the amplitude of y=6cos4thetaA)3/2 B)6 C)4 D)pi/2 I chose B 2)Find the period of y=tan5theta A)10pi B)2pi/5 C)5pi D)pi/5
1. 3 answers
2. 534 views
1)Write the equation sin y= x in the form of an inverse function.A)y=Sin-1x B)x=Sin-1y C)y=sin-1x D)y=Sinx I chose A 2)Solve
1. 4 answers
2. 700 views
1)In triangle ABC, C=60 degrees, a=12, and b=5. Find c.A)109.0 B)10.4 C)11.8 D)15.1 I chose B 2)Which triangle should be solved
1. 5 answers
2. 2,571 views
1)Find the exact value of cot(-315)A)1 B)square root of 2 C)square root of 2 over 2 D)2 I chose C 2)Find the exact value of
1. 2 answers
2. 789 views
1)Which angle is coterminal with a -400 degree angle in standard postion?A)40 B)80 C)320 D)400 I chose A (for the next one I
1. 3 answers
2. 1,561 views
1)I have a right triangle. the hypotenuse is 7 the opposite leg is x and an angle is 32.Which equation can be used to find x?
1. 3 answers
2. 1,093 views
Find the value of Sec A. and I have a right triangle BC=30 and BA=34A)17/8 B)9/17 C)15/17 D)17/15 I chose D
1. 3 answers
2. 526 views
2)For 2000 patients, a blood-clotting time was normally distributed with a mean of 8 seconds and a standard deviation of 3
1. 2 answers
2. 781 views
Age 0-14 number of people= 206,423Age 15-34 number of people= 265,778 Age 35-54 number of people= 308,946 Age 55-74 number of
1. 2 answers
2. 700 views
Age 0-14 number of people= 206,423Age 15-34 number of people= 265,778 Age 35-54 number of people= 308,946 Age 55-74 number of
1. 1 answer
2. 723 views
1)A coin is tossed 5 times. Find P(at most 4 tails.)A)3/16 B)13/16 C)1/32 D)31/32 I chose D 2)How many different arrangements of
1. 3 answers
2. 3,057 views
1)A coin is tossed 5 times. Find P(at most 4 tails.)A)3/16 B)13/16 C)1/32 D)31/32 I chose D 2)How many different arrangements of
1. 0 answers
2. 459 views
1)Two marbles are chosen at random from a bag containing 3 blue and 2 red marbles. The relative-frequency histogram shows the
1. 2 answers
2. 1,952 views
1)An ice cream store has 31 flavors of ice cream and 10 toppings. A regular sundae has 1 flavor of ice cream, 1 topping, and
1. 6 answers
2. 1,030 views
How would I translate the sentence "it was good that the water was not cold?" into French? Would I need to use the subjunctive?M
1. 4 answers
2. 515 views
Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that,
1. 1 answer
2. 1,158 views
is baked chicken healthier than grilled chicken?
1. 1 answer
2. 455 views
How do you turn 5/16 into a decimal?
1. 2 answers
2. 447 views
What does the word keen mean in australian?
1. 3 answers
2. 2,808 views
A furniture company displays bedroom sets which require 21 square meters of space and living room sets which require 42 square
1. 4 answers
2. 1,995 views
If a bedroom set sells for $10,000 and a living room set sells for $18,000,determine the number of bedroom sets and living room
1. 2 answers
2. 595 views
If a bedroom set sells for $10,000 and a living room set sells for $18,000,determine the number of bedroom sets and living room
1. 0 answers
2. 1,250 views
Describe the system 6x-2y=10 and 9x-3y=8 as consistent and independent, consistent and dependent, or inconsistent. Explain.I
1. 2 answers
2. 636 views
ATTENTION TEACHERS AND HELPERS I Am THE REAL Jon I'm not changing my name to greg,jonathan or anything else whenever you see
1. 2 answers
2. 489 views
an ice cream store has 31 flavors of ice cream and 10 toppings. A regular sundae has one flavor of ice cream, one topping, and
1. 6 answers
2. 1,613 views
In an induction proof of the statement 4+7+10+...+(3n-1)=n(3n+5)/2the first step is to show that the statement is true for some
1. 4 answers
2. 1,545 views
1)Find the third iterate x3 of f(x)=x2-4 for an initial value of x0=2A)-4 B)4 C)12 D)-12 I chose C 2)Use Pascal's triangle to
1. 8 answers
2. 2,010 views
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4A)15 B)15/2 C)-15 D)1/15 I chose A 5)Find the fifth term of the
1. 2 answers
2. 4,676 views
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4A)15 B)15/2 C)-15 D)1/15 I chose A 2)Find the sum of the infinite
1. 2 answers
2. 874 views