Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

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Question 224098: Simplify [–4 + (–3)] + [–(–5 + 2)] = ?
A) 4
B) 10
C) –4
D) –10
= -4-3+3 so i got C
is it right ?
Thanks

Click here to see answer by rapaljer(4667)

Question 224097: Simplify 4 – (5 + p) = ?
A) 1 – p
B) –1 – p
C) 9 + p
D) 9 – p
= Distribute the negative (one) into the parentheses, changing it to:
4-5-p
which will equal:
-1-p so i got B .
is it correct ?
Thank you very much !

Click here to see answer by rapaljer(4667)

Question 224096: Simplify x + 5 + [–(x) + (–14)].
A. –9 + 2x
B. 19
C. –9 – x
D. –9
= X + 5 - X - 14 so I got D.
is it correct ?
Thank you
Click here to see answer by rapaljer(4667)

Question 224100: 1 . Which of the following sets is not closed under addition?
A. odd numbers
B. real numbers
C. whole numbers
D. negative integers
= i got A
2 . Which property is illustrated in the following?
5 + 6 + 7 = 6 + 5 + 7
A. commutative
B. associative
C. reflexive
D. transitive
= i got A
3 . Which property is illustrated in the following?
4 + (3 + x) = (4 + 3) + x
A. commutative
B. reflexive
C. associative
D. transitive
= i got C
4 . Is subtraction of real numbers commutative?
A. Yes
B. No
= i got B
5 . When using a number line to simplify 3 + (–6), you start at which point on the number line?
A. origin
B. –6
C. 3
D. –3
= i got A
6 . Simplify (–4 + 6) – 2.
A. 8
B. 4
C. –4
D. 0
= i got D
7 . Simplify –9 + (–3t) + (–21).
A. –12 + (–3t)
B. –33t
C. –30 + (–3t)
D. 12 + (–3t)
= i got B
8 . Simplify [–7 + 3] + (–4 + (–2)).
A. –2
B. –10
C. –6
D. 2
= i got B
9 . Given x = –3, y = 6, and z = –4, evaluate –z + x – y.
A. –7
B. –13
C. –5
D. –1
= i got C
10 . Simplify x + 5 + [–(x) + (–14)].
A. –9 + 2x
B. 19
C. –9 – x
D. –9
= i got A
Is it all correct ?
Thanks ! :)

Click here to see answer by rapaljer(4667)

Question 224261: Which of the following numbers has no reciprocal?
A. 1
B. 0
C. 1
D. 3
Simplify 24(–1/4)(1/2).
A. 72
B. –3
C. –72
D. 3
Simplify 5 + 6(x – 4).
A. –19 + 6x
B. 1 + 6x
C. 11x – 44
D. 6x – 9
Simplify 4(x – 5y) – 3(2x + 6y).
A. –2x – 2y
B. –2x + y
C. 3x + y
D. –2x – 38y
Simplify (1/10)(5x + 2).
A. 2x + 1/5
B. 7x / 10
C. 1/2x + 1/5
D. 2x + 5
Simplify (1/y)(4yx).
A. x / 4
B. 4xy / y
C. 4x
D. 4 / x
= I got B,B,B,A,B and C.
is it all correct ?
Thank you !
Click here to see answer by stanbon(57347)

Question 224255: 1 . Simplify (63 • 45) – (33 • 45).
A. 1340
B. 1350
C. 1300
D. 1400
2 . Simplify 5 + 8(x – 6).
A. –43 + 8x
B. –1+ 8x
C. 13x – 78
D. –53 + 8x
3 . Simplify (–1)(5)(–2)(3).
A. –3
B. –30
C. 30
D. 21
4 . Simplify 2(3x – 5y) – 3(x – 2y).
A. –9x – 12y
B. 3x – 3y
C. 3x – 7y
D. 3x – 4y
5 . Choose the equation that best represents the following: The sum of three consecutive integers is 24.
A. x(x + 1)(x + 2) = 24
B. x + (x + 2) + (x + 4) = 24
C. (x + 1)(x + 2) = 24
D. x + (x + 1) + (x + 2) = 24
6 . Choose the equation that best represents the following: The greater of two consecutive even integers is six less than twice the smaller.
A. x + 1 = 2x – 6
B. x + 2 = 6 – 2x
C. x + 2 = 2x – 6
D. x + 1 = 6 – 2x
7 . Simplify (–49yx)(–1/7).
A. 7xy
B. 7x + 1
C. –7xy
D. 7y – x
8 . Simplify 12(3/4x + 2/3) – 1/4(8x – 16).
A. x
B. 7x + 12
C. 7x + 4
D. 7x – 12
9 . Simplify 63x / –7.
A. –9
B. 9
C. 9x
D. –9x
= I got B,A,C,D,D,C,A,D and A.
is it all correct ?
Thank you so much
Click here to see answer by rfer(12660)

Question 224257:
A. –12
B. –88
C. 12
D. 88
= I got A.
is it right ?
Click here to see answer by rfer(12660)

Question 224264:
A. 1
B. –1
C. –3
D. 3

When multiplying several real numbers together, how can you quickly determine if the answer will be positive or negative?
A. The answer is positive if the largest number is positive.
B. The answer is positive if there is an even number of negative numbers.
C. The answer is positive if there is an even number of numbers.
D. The answer is positive if there is an even number of positive numbers.

Simplify 16 • 16 + 4 • 16.
A. 4160
B. 310
C. 330
D. 320
= I got A,B and D
is it all right ?
Thanks !
Click here to see answer by mnamaky(1)

Question 224260:
A. 4
B. –4
C. –2
D. 2
= I got C
is it right ?
thanks
Click here to see answer by rfer(12660)

Question 224409:
if 2x^2 - 14x + 29 = p(x+q)^2 +r holds for all real values of x, find the values of p,q and r. Hence, state the minimum value of the function and the corresponding value of x..
im stuck.. plz help :(
Click here to see answer by stanbon(57347)

Question 224201: please help me with word problem: the function H described by H(x)=2.75x + 71.48 can be used to predict the height in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long. The predicted height of a woman whose humerus is 38 cm long is ? cm
Click here to see answer by ankor@dixie-net.com(15652)

Question 224245: Find and equation for the table below?
S 1 2 3 4 5 6
T 1 4 7 10 13 16
Click here to see answer by ankor@dixie-net.com(15652)

Question 224508: f(x) = 1/x-2
g(x) = 4/x
Find (GoF) (x)
Click here to see answer by rapaljer(4667)

Question 224507: f(x) = 1/x-2
g(x) = 4/x
Find (FoG)(x)
Click here to see answer by rapaljer(4667)

Question 224785:
A. –12
B. –88
C. 12
D. 88

Click here to see answer by checkley77(12569)

Question 224784: .
A. 4
B. –4
C. –2
D. 2

Click here to see answer by checkley77(12569)

Question 224783: .
A. 1
B. –1
C. –3
D. 3

Click here to see answer by checkley77(12569)

Question 224840: directions; use inductive reasoning to describe each pattern. then find the next two numbers in each pattern.
problem;
4, 6, 9, 13.5....
what are the next two numbers and how did you get it?
Click here to see answer by LtAurora(115)

Question 225060: Rewrite the equation so that y is a function of x
13=12x-2y
The answer is in the back of my book but I don't know how to solve it?!
Click here to see answer by scott8148(6628)

Question 225073: rewrite the equation so that y is a function of x
y/5-7=-2x
How do you solve this?
Click here to see answer by drj(1380)

Question 224985: A rectangle that is x feet wide is inscribed in a circle of radius 37 feet. Express the area of the rectangle as a function of x.
Click here to see answer by ankor@dixie-net.com(15652)

Question 225092: Rewrite the expression so that y is a function of x
1/3(y+2)+3x=7y
How do you solve this?
Click here to see answer by jim_thompson5910(28595)

Question 225105: rewrite so that y is a function of x
1/5(25-5y)=4x-9y+13
Click here to see answer by jim_thompson5910(28595)

Question 225539: I need help on this word/function problem please.
A meteologist is inflating a spherical balloon with helium gas. If the radius of the balloon is changing at a rate of 1.5 cm per second, the function for the radius is r(t)=1.5t. The volume of a sphere is given by the function
V(r)=4/3(pie)r^3. Find (V o r)(t).
Wasn't sure where pie key was.
Click here to see answer by solver91311(16885)

Question 225607: Rewrite the equation so that y is a funtion of x.
2x+y=5
can you please show me step by step how to do problems like this? i have been having alot of difficulty with problems like this.
Click here to see answer by checkley77(12569)

Question 225702: how do i make this a function of x??
-2x+5y-6=-11
Click here to see answer by checkley77(12569)

Question 226329: find the domain of f(x) =7-8x/5x-9
Click here to see answer by edjones(7569)

Question 226324: find the domain of f(x) =7-8x/5x-9
Click here to see answer by edjones(7569)

Question 226513: 4. Use the following to answer questions a-d:
f(x) = x2 + x and g(x) = x – 5
a. Find h(x) = (f ◦ g)(x).
b. State the domain of h(x) = (f ◦ g)(x).
c. Find h(x) = (g ◦ f)(x).
d. State the domain of h(x) = (g ◦ f)(x).

Click here to see answer by user_dude2008(1861)

Question 226510: Determine whether the equation defines a function with independent variable x. If it does, find the domain. If it does not, find a value of x to which there corresponds more than one value of y.
x|y| = x + 9
Click here to see answer by user_dude2008(1861)

Question 226660: what is 3x^2 = 10x
let us solve for x :
3x^2 -10x = 0
x(3x-10)
x = 0 or 3x-10=0
solve for x : 3x= 10
x = 10/3

Click here to see answer by 3788(5)

Question 226760: How do you make Y a function of X
Q: 7X + Y = 13
Click here to see answer by rfer(12660)

Question 227127: y2=7-x2 is this an function
Click here to see answer by RAY100(1637)

Question 227132: trouble here!! help please
find the indicated outputs for f(x) = 5x^2-4x. Can you explain this to me step by step, much appreciated
Click here to see answer by RAY100(1637)

Question 227263: rewrite the equation so that y is a function of x
3x+5y=7
Click here to see answer by solver91311(16885)

Question 227263: rewrite the equation so that y is a function of x
3x+5y=7
Click here to see answer by checkley77(12569)

Question 227222: Hey! Ok So i need some help. And i would appricate it alot. i have a major test tommorrow and i need help with this problem
Evaluate the function rule for x=2
y=3x+9
I am confused of what to do/ do you divide 9 into 3 or what?
Thanks so much if you can help me on how to do this project.
A millon thankss!!!!
Click here to see answer by rfer(12660)

Question 227298: Hi, I have a question about how to go about this function word problem, can someone help me pleasee?
A student holds a ball of string attached to a kite. The string is held 1 m above ground and rises at a 30 degree angle to the horizontal. If the student lets the string out at a rate of 2 m per second, express the kite's height h(in meters) as a function of the time (in seconds) after the kite begins to fly.
Click here to see answer by ankor@dixie-net.com(15652)

Question 227455: Please help find the inverse of f(x)= -3/(x+1)
Thanks Alot!!
Click here to see answer by nerdybill(6959)

Question 227547: Which equation could be used to solve the following?
A pizza is divided into 8 slices. Matt ate 3 of the 8 pizza slices. He paid $3.75 for his share of the cost. How much did the whole pizza cost?
A.
B.
C.
D.
* I got A
Which equation could be used to solve the following?
Find three consecutive integers such that 3 times the smallest is 15 more than the sum of the largest and next to largest.
A. 3x = 15 + x + x + 1 + x + 2
B. 3(x + 1) = 15 + x + x + 2
C. 3x = 15 + x + 1 + x + 2
D. 3x = 15 + x + x + 1
* I got D
Which equation could be used to solve the following?
The length of a rectangle is 3 more than twice the width. What are the dimensions if the perimeter is 36?
A. w + 2w + 3 = 36
B. 2w + 2w + 3 = 36
C. 2w + 2(w + 3) = 36
D. 2w + 2(2w + 3) = 36

When solving an equation, what is the ultimate goal?
A. to isolate the variable
B. to remove fractions
C. to remove negative signs
D. to get all numbers on the right side of the equal sign

Click here to see answer by Alan3354(30993)

Question 227674: f(x)= __6___
x-2
Click here to see answer by user_dude2008(1861)

Question 227937: 1. Take a look at the following table:
x -2 -1 0 1 2

f(x)-5 -2 1 4 7

a. Write out an equation for f(x). Assume the function is linear
b. What is the slope? Is it negative or positive? What information do we get from the slope?

Click here to see answer by stanbon(57347)

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