Posts by STEVE

Total # Posts: 54,364

english
Identify the sentence that is punctuated correctly. a. She wore an unusual, attractive dress. b. She wore an unusual, and attractive dress. c. She wore an unusual attractive dress.

english
. Identify the sentence that is punctuated correctly. a. “Come back here”! screamed the boy’s mother as he ran into the street. b. “Come back here!” screamed the boy’s mother. As he ran into the street. c. “Come back here” screamed the ...

english
Thank you very much for all your help.

english
Identify the correct sentence. a. Daniel’s science class starts at 7:30 am in the morning. b. Daniel’s science class starts at 7:30 a.m. c. Daniel’s Science class starts at 7:30 in the morning.

english
Not sure if my second answer went through. I think it's A

english
Would it be a

english
Identify the sentence that is correctly punctuated. a. Our goal is simple: we aim to be the best in the industry. b. Our goal is simple, we aim to be the best in the industry. c. Our goal is simple—we aim to be the best in the industry. d. Our goal is simple: we aim to be...

english
Identify the sentence that is punctuated correctly. a. Boston, Massachusetts played an important role in American history and politics. b. Boston, Massachusetts played an important role, in American history and politics. c. Boston, Massachusetts, played an important role in ...

english
his or her are singular, correct? Or are they looking for b?

english
Nobody on the Tri Rail seems to know ________ way around Miami. A) their B) his C) there D) his or her

english
. Choose the correct sentence. a. Us kids are to blame for the mess in the kitchen. b. Don’t talk to we teenagers about curfews. c. Cheryl, Doug, and myself went to the beach on Independence Day. d. He corrected himself immediately. e. The manager and myself will attend ...

geometry
since BD bisects ABC, the two halves are equal. So, 2(2x+22) = 8x solve for x, and then use that to find DBC = ABD.

Algebra 2
Still no ideas at all? What about the formula confuses you? D = rt, so r = D/t ...

Calculus
shift right 4: (x-4)^3 shrink vertically by a factor of 2: 1/2 (x-4)^3 shift up 5: 1/2 (x-4)^3 + 5 Better review your algebra 2 ...

Plzzz help
A: future perfect B: past perfect C: present perfect D: past time to review the verb forms ...

Math
(- 3 1/5) + (-6 1/2) = -16/5 - 13/2 = -32/10 - 65/10 ...

Math
good, but make that 7.2 hours ...

Math
half the perimeter is 500 one side is x, so the other is 500-x

Maths
The speed difference is 100 The first plane has a 1/2 hour head start, during which it went 150 miles. so, it will take 1.5 hours to catch up. ...

math
(2*3^2, 3^3, 2*3*5) = 3 3 is the only factor common to all three numbers.

math
If you really don't understand anything about the properties, I suggest google. If you search for "distributive property" you will find many explanations and examples. If it's still unclear, you really need to sit down with your teacher and get some in-person...

math
I'd guess distributive. Why?

Algebra and Geometey
it is the transformation needed to return to the original state. Just as an inverse function is what you need to get x. sqrt(x) and x^2 are inverses because (sqrt(x))^2 = sqrt(x^2) = x similarly, stretch by 2 and shift 8 up has the inverse transformation shift down 8 and ...

english
Choose the correct sentence. a. Him and I went through a lot together. b. My boss asked my coworker and I to stay late. c. Jennifer stormed out of the house and slammed the door because she and her mother got into an argument. d. Who should I send this email to?

english
c

english
Carolyn was thrilled when she found out her new employer offers two ________ vacation time. a. week’s b. weeks c. weeks’ d. week

english
Mr. ________ profit-and-loss report is due tomorrow. a. Jones’s b. Jones’ c. Joneses’ d. Jones

english
d

english
. Identify the sentence that is correctly punctuated. a. Word Processing and Excel: those are the technology job requirements. b. Word Processing, PowerPoint, and Excel, those are the technology job requirements. c. Word Processing and Excel; those are the technology job ...

Math
the amount of acid in the parts must add up to the amount in the final mix. If x ml of water (0% acid) are added, then you need .60*50 + 0x = .40(50+x) Now just solve for x. This assume you know what "%" means ...

Math
see related questions below.

math
well, you can start out by defining a and b. a = AB + BC/2 = AB - CB/2 b = AD + DC/2 = AD - CD/2 See what you can do with that, and AC = AB+BC BD = AD-BC

Math
first, list the scores in ascending order...

Math
yes.

Math
Clearly the center is at (-4,3) That means you have an ellipse with a = 6/2 = 3 b = 4/2 = 2, so its equation is (x+4)^2/3^2 + (y-3)^2/2^2 = 1

PreCalc
Draw a diagram, with the center of the base at (0,0) It is easy to see that the equation of the ellipse is x^2/55^2 + y^2/40^2 = 1 Now just find y when x=33

Math
If x cc are 40%, then the rest (25-x) is 10%. So, adding up the nutrient content, .40x + .10(25-x) = .16(25)

math
just take the average of the coordinates.. For x, that means (3 + -1)/2 = 2/2 = 1 Note that 1 is halfway from 3 to -1.

math
?y/?x = (3-3)/(2+6) = 0/8 = 0 Note that both points have the same y-coordinate, so the line is horizontal. Sometimes it pays to do a sanity check before diving into calculations,

Algebra (Please help!)
I assume you want to solve these inequalities. Just do them the way you would work with equations. x - 7 > 10 add 7 to both sides: x > 17 3x <= 20 divide by 3: x <= 20/3 5a - 2 < 8 add 2, then divide by 5: 5a < 10 a < 2 2t + 8 >= 4(t + 1) 2t + 8 >= ...

Maths
cost: 990/1.10 and 990/0.90 so his income:cost ratio is (2*990)/(990/1.10 + 990/0.90) = 0.99 That is, a loss of 1%

Algebra, Trig
clearly the axle is 8m above the ground, and the radius is 4m. So, you can start out with a function that describes the distance to the ground. It will look something like h(t) = 4+4sin(t) See where you can go from there. I assume the platform is at the wheel's lowest point.

Math
well, 7^2 = 49 8^2 = 64 9^2 = 81 ...

Maths
angle B is 180-67-73 = 40° Now, using the law of sines 250/sin40° = PB/sin67°

Algebra
Try typing in your expression at wolframalpha.com and keep adding parentheses until it interprets your text correctly! I suspect you mean b - 2b/(b+3) ----------------- 1/(b+3) + 1/(b-3) If not, maybe you can clear things up a bit. Online text formatting requires a bit more ...

Math
What, you didn't try dividing 72440 by 9 to see whether it had no remainder? Geez! If a number is divisible by 9, so is the sum of its digits. 2+4+4=10, 1+0=1, so the missing digit is 8. 82440 = 9*9160

math / science
well, 512 = 2^9, so it has doubled 9 times...

Math
33+99+44 + 33*99 + 33*44 + 99*44 + 33*99*44 = 152999

Math
assuming the interest is posted at the end of the year, she will have 90*12 * 1.03 No idea about leftover money. How much does the computer cost?

geometry
using the law of sines, you can find the other sides, since 12/sin60° = KM/sin75° = KL/sin45° Then just add up the sides. Your idea will work, but you will need to note that (12-x)/x = sin15° you can then solve for x using the half-angle formula, but the ...

Math
25/5 - 14/5 = 11/5 = 2 1/5

algebra 1
same problem. Just add up the three values 3x+2 6x-1 -x+7 ------ 8x+8

algebra 1
just add them up

Algebra
9-0.5625-7.75 = ?

Intro to linear algebra
They are dependent if the determinant is zero

Math
because sin x < x Just graph it - the curve lies below the line

intro to Linear Algebra
for each coordinate, add 1/4 of the difference between P and Q. For example, using the x coordinate, Q-P = 1-2 = -1 So, add -1/4 to P, and the new x-coordinate is 1.75 similarly for y and z.

college algebra
clearly, (0,0) and no others

Advanced Algebra
I agree with you and went back to add in the down payment and got $6599.48

Advanced Algebra
Camille purchased a motorcycle for $5,723. She made a down payment of $1,775. She applied for a four-year installment loan with an interest rate of 10.2%. What is the total cost of the motorcycle after four years? $6599.48 $6993.60 $4824.48 $8768.60 My answer is c

Math
So, the mysterious 2 crops again. However, for an indefinite integral, the extra constant does not matter, since ln((x+...)/2) = -ln2 + ln(x+...) which disappears into the arbitrary constant C.

Math
The question is, where did you get the 1/2 factor anyway? You have declined to show just what you did. You know that x^2+2x+5 = (x+1)^2 + 2^2 and that ?1/?(x^2+a^2) dx = ln(x+?(x^2+a^2)) since if x = a*tan? x^2+a^2 = a^2 sec^2? dx = a sec^2? d? ?1/?(x^2+a^2) dx = ?1/(a sec?) (...

Science
If this is just a way of saying that the population doubles every 6 hours, then in 4 hours, the population will be 2^(4/6) = 1.587 times the initial population. If you started with a single cell, of course, after 4 hours it will not yet have divided, so there will still be a ...

maths
well, 15 minutes is 1/4 of an hour, so ...

Math
(2 3/4)/10 = 11/40 11/40 * 70 = 77/4 = 19 3/4 or about 20 words Unless you wanted hours, not minutes... "2 whole number 3/4" ?? Who ever wrote a number like that?

Maths
At height 48, we have 64t-16t^2 = 48 t=1 or 3 Since the body is rising (not falling), t=1 v(1) = 64-32*1 = 32 32 = 1/2 * 64 so, k = 1/2

math
Huh? I assume you are just showing an example, since none of the numbers matches. In fact, the distance x is found via x/(2.3-1.2) = cot 39.8°

Math
1/?(x^2+2x+5) = 1/?((x+1)^2 + 3) Now, ?1/?(u^2+a^2) du = ln(x+?(u^2+a^2)) let u = x+2 and a^2=3, and you have a result of ln(u+?(u^2+a^2)) = ln((x+1)+?((x+1)^2+3) = ln(x+1+?(x^2+2x+5))

Math
(a/b) / (c/d) = a/b * d/c = (ad)/(bc) which is a rational number.

Advanced Algebra
you need to determine which deductions are ignored if he takes the standard deduction...

Advanced Algebra
Jeffrey earned a gross income of $51,280 last year. He made $1,746.83 in student loan interest deductions, donated $2,914 to his favorite charities and paid $3,941.47 in home mortgage interest. Jeffrey claims a standard deduction of $11,400 for himself and his non-working ...

Advanced Algebra
Carmela works at a department store and earns $10.45 per hour. She has $33 removed from every paycheck for medical insurance. If her goal is to earn a gross income of $468.60 in one week, which equation will help Carmela determine the number of hours (h) she must work? My ...

Advanced Algebra
Jeffrey earned a gross income of $51,280 last year. He made $1,746.83 in student loan interest deductions, donated $2,914 to his favorite charities and paid $3,941.47 in home mortgage interest. Jeffrey claims a standard deduction of $11,400 for himself and his non-working ...

Advanced Algebra
thank you

Advanced Algebra
Manuel pays a flat rate of $105 for his cell phone. He is also charged $0.12 for every text that he sends. His cell phone bill can be no more than the amount he has budgeted for it each month. If x represents the number of texts and y represents his budgeted amount, which ...

Advanced Algebra
Manuel pays a flat rate of $105 for his cell phone. He is also charged $0.12 for every text that he sends. His cell phone bill can be no more than the amount he has budgeted for it each month. If x represents the number of texts and y represents his budgeted amount, which ...

Advanced Algebra
Carmela works at a department store and earns $10.45 per hour. She has $33 removed from every paycheck for medical insurance. If her goal is to earn a gross income of $468.60 in one week, which equation will help Carmela determine the number of hours (h) she must work? My ...

Geometry
what is the diameter of a table tennis ball: what is the 40 mm diameter of a tennis ball: 6.8 cm

Math (Planes)
P is parallel to the y-axis, perpendicular to the x-z plane. The plane x=3 is perpendicular to the x-axis, parallel to y-z plane.

Algebra 2
No way to tell. Ummm. How do "sides of the perimeter" differ from sides of the triangle?

Science
Check my answers, please. 1. A prion is an infectious, self-reproducing protein structure. (1 point) True X False 2. As one organism eats another, toxins can be spread throughout the food chain. True False X 3. The problem with DDT in the environment is that it decomposes ...

math
(a+8d)/(a+4d) = (a+15d)/(a+8d) (a+8d)(a+8d) = (a+4d)(a+15d) a^2+16ad+64d^2 = a^2+19ad+60d^2 4d^2 = 3ad 4d = 3a d = 3a/4

Math
x - 2 - 4 = 3 x-6 = 3 x = 9

Math
Mixed numbers are pain. They cannot be directly manipulated with any ease, so convert them to fractions first: 17 1/3 + ( -50 1/3) - 5 1/2 = 52/3 + (-151/3) - 5 1/2 = -99/3 - 5 1/2 = -33 - 5 1/2 = -33 - 5 1/2 = -38 1/2 If we had not had an integer quotient (99/3) we'd have...

Environmental Science
1. A prion is an infectious, self-reproducing protein structure. True X False 2. As one organism eats another, toxins can be spread throughout the food chain. True False x 3. The problem with DDT in the environment is that it decomposes quickly. True False x 4. The Bald Eagle...

science
of all possible answers, your choice is the worst. x-rays are just another kind of light. Nothing goes faster than light!

Math
density = mass/volume so, m = vol*density m = 0.250 g/cm^3 * 200cm^3 = 50g = 0.05 kg

Math
so, what's the trouble? You have the formula, so crank it out. h = 2r (diameter = base), so v = ?/3 r^2h = ?/3 (h/2)^2h = ?/12 h^3 dv/dt = ?/4 h^2 dh/dt 50 = ?/4 * 25^2 dh/dt dh/dt = 8/(25?) ft/min

Geometry
Neither do I. You have no equation, and no value for y. What have you left out?

Geometric progression
Clearly a=4 and r=2 S4 = 4(2^4-1)/(2-1) = 4*15 = 60 check: 4+8+16+32 = 60

math
just subtract the inner dimensions from the outer ones. mass = volume * density

Math
For (b) and (c) you ought to know that the sum of the first n squares is [n(n+1)(2n+1)]/6

math
Depends. Division is not associative. (4/9)÷((2/3)÷(5/6)) = (4/9)÷(2/3 * 6/5) = (4/9)÷(12/15) = (4/9)÷(4/5) = 5/9 ((4/9)÷(2/3))÷(5/6) = (4/9 * 3/2)÷(5/6) = (12/18)÷(5/6) = (4/6)÷(5/6) = 4/5

Geometry
E is as far from C as it is from D. So, CE = E-C = (-1-5,0-2) = (-6,-2) So, add that much to E and you get D = E+(E-C) = (-1,0)+(-6,-2) = (-7,-2)

Algebra
Oops. I read ahead. You (and of course, Reiny!) are correct

Algebra
False. Multiplying by negative values reverses the direction. It is really just a shorthand way of swapping sides. -2x-20 >= 75 add 2x to get -20 >= 75+2x subtract 75 -95 >= 2x Now the 2x is on the small side of the inequality, so it's the same as 2x <= -95

algebra1
check the ratio between terms. If it is constant, you have a GP. For example, check the first 3 terms of f(x) = -7x+3 f(1) = -4 f(2) = -11 f(3) = -18 (-11)/(-4) ? (-18)/(-11) so not a GP Use ^ for exponents, as in x^7 and 7^x

math algerbra
I have no idea what all that means. Write fractions with parentheses and virgules, as in (1/5)^9 or 5^5/7

math 2
(x,y) -> (-x,-y) -> (-x-5,-y-3)

Algebra
you have found y=1 You also have 5y+6z=5 so, 5+6z = 5, so z=0 Now you have any of the original equations, such as 2x+3y+3z=5 2x+3+0=5 x=1

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