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Reiny

@Reiny

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Ms. Sue was a kind, gentle, and good person that I had the privilege of knowing through this webpage. I have been a tutor for
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changing your numbers to fractions .... 0.125, 0.25, 0.5, 1, ... = 1/8, 1/4/, 1/2, 1, it looks like a GS with a = 1/8 and r = 2 so term(8) = ar^7 = (1/8)(2^7) = 16
Triangles with an angle greater than 90º are called obtuse, triangles with 3 different angles, thus 3 different sides, are called scalene. Some triangles, such as yours, can be both obtuse and scalene, but a triangle with angles of 120°, 30°, 30° would
Going with ooblecks idea of finding a common denominator of 8, we get {3/4, 1/8, -1/2, -9/8...} = {6/8, 1/8, -4/8, -9/8...} , which is an arithmetic sequence, with common difference of -5/8 What do you know about convergence and divergence of arithmetic
It is totally inappropriate to impersonate a very respected teacher, Ms Sue, who unfortunately passed away last year. We all deeply mourn her loss. You will be banned from this site and your posts should be removed.
geeessshhh guys https://www.jiskha.com/questions/1835043/debra-had-50-bill-when-she-went-to-the-movie-she-bougtt-two-tickets-for-8-75-each-a
40 ft : 8 sec = 110 ft : x sec 40/8 = 110/x 40x = 880 x = 880/40 = 22
Already answered, look back
I want you to find $50 - cost of 2 tickets - cost of one popcorn - cost of 2 drinks I gave you the steps to do that.
By the cosine law: 7.5^2 = 7^2 + 8^2 - 2(7)(8)cos Q cosQ = .50669... angle Q = 59.556° In any cyclic quad, opposite angles are supplementary, so angle S = 120.444° If Ja, genau die selbe, nur ein wenig verlaengert If SR=SP, then you have an isosceles
for your AP, 5 - (x-1) = x+2 - 5 solve for x
8x ≥ -2
Incomplete
What is 50 - 2(8.75) - 6.95 - 2(2.5) ??
What is 12 ÷ 1.5 ??
Is this in response to some sort of trig equation?
Ja, genau die selbe, nur ein wenig verlaengert d = √(∆x^2 + ∆y^2 + ∆z^2)
s(t)= -16t^2+64t v(t) = -32t + 64 a(t) = -32 a) find v(2) b) clearly a constant for the domain of t c) set v(t) = 0 and solve for t then sub that into s(t) to find the corresponding height
half-life ----> so I will use 1/2 as the base in my exponential equation half-life is 5830, so I will use t/5830 as my exponent amount = (1/2)^(t/5830) = .5^(t/5830) 20% has decayed ---> I have 80% or .8 left .8 = .5^(t/5830) take log of both sides and use
Argggh,, I did minutes per page, go with oobleck
5/6 pages in 2/3 minutes ----> 1 page in (2/3) ÷ (5/6) minutes = (2/3)(6/5) minutes = 4/5 minutes or 5/6 pages in 2/3 minutes = 5 pages in (2/3)(6) or 4 minutes = 1 page in 4/5 minutes or 1/(5/6) = x/(2/3) (5/6)x = 2/3 x = (2/3)(6/5) = 12/15 = 4/5
a^2 - 2ax + a^2 = (x - a)^2 so x^3 + 3px + q = (x-a)(x-a)(x-k) the last term of (x-a)(x-a)(x-k) is -ka^2, so -ka^2 = q ----> k = -q/a^2 and x^3 + 3px + q = (x-a)(x-a)(x+q/a^2) = (x+q/a^2)(x^2 - 2ax + a^2) = x^3 - 2ax^2 + a^2 x + (q/a^2)x^2 - (2q/a)x + q =
so in c = g + 14, you are given the value of c to be 20 , but g is still unknown, so ... 20 = g + 14 you want g all by itself in your equation, so let's get rid of the +14 by doing the invers, that is, let's subtract 14 from both sides 20 - 14 = g + 14 -
Translate your data into ordered pairs in the form (time, temperature) : (2,19), (6,27), (10,35), (14,43) taking the slope between consecutive points shows that it is a constant 2, so the relation is linear and can be expressed in the form y = mx + b or
NUMBER HAS 5 TEN THOUSANDS ---- 5X,XXX 2 MORE THOUSANDS THAN TEN THOUSANDS --- 57,XXX NO HUNDREDS ---- 57,0XX 1FEWER TENS THAN TEN THOUSANDS ---- 57,04X 3 MORE ONES THAN TENS ---- 57,047 Now what was so difficult to just follow the English description?
the product of four and a number x ----> 4x now what is 6 less than that?
Since you claim that the depreciation is linear, (not realistic), let's express the given data as ordered pairs in the form (years, value), that is, (0,140050) and (25,12550) slope = (12550-140050)/(25-0) = -5100 and since the point (0,140050) behaves like
Looks to be that oobleck showed you HOW to do it just fine.
amount of the pizza left over as a fraction = 1 - 1/4 -2/3 = ...
Your question makes no sense. Did you mean: By what number must (√2)(x√x)(4√(10x)) be multiplied to make it rational ? (√2)(x√x)(4√(10x)) = 4√20 x^2 = 8√5 x^2 If I multiply this by √5, I get 40x^2 Let me know if that was not your
For a sequence to be arithmetic the difference between consecutive terms must be the same ... 7-4 = 3 9-7 = 2 12-9 = 3 , mmmhhhh?
Your post makes no sense, but let me take a stab at what you are trying to say and conjure this .... " A spider has eight legs and an ant has six legs. There are a group of spiders and a group of ants. The groups have equal numbers of legs. What is the
From Damon's 3 x y - 5 x = y + 4 3xy - y = 4 + 5x y(3x - 1) = 4+5x y = (5x + 4)/(3x - 1)
On a number line, make marks of 1/2 units apart. Place 1/9 on your number line, which of of marks is closest to 1/9 ?
Your correct choice should have looked like this 25 ≤ x ≤ 30
So you want to go the other way around 360-250 = 110 so the coterminal angle with 265° is -110°
No such property, the statement is false
area of trap = (1/2)(sum of parallel sides)(d), where d is the distance between them 2 = (1/2)(6+8)(d) d = 2*2/14 = 2/7 cm
For "greater than or equal to" you need ≥ so.... x < –3 or x ≥ 5 Btw, Ms Sue is no longer with us, unfortunately she passed away late last year. We all miss her
False, all I need is one counter-example let n = 11 then n^2 + n + 11 = 11^2 + 11 + 11 = 11(11 + 1 + 1) = 11(13)
2x + 6/3 = 20 "quotient of six and three" , isn't that just 2 ????
based on a rather little used identity: tan(A/2) = (1 - cosA)/sinA and noting that 22.5= 45/2, 37.5 = 72/2, and 82.5 = 165/2 I will skip writing the degree symbol, let it be understood that these are in degrees we have: tan 22.5 = (1 - cos45)/sin 45
I think the wording is rather ambiguous, oobleck interpreted it as P is directly east of Q. I read it that P is to the right of Q, in a generally eastern direction.
I made a sketch and in my triangle PQR , I have angle P = 60°, and PR = 10 That is not enough information, you need 3 bits of independent info. Perhaps another angle or a side ?
Use either long algebraic division or synthetic divsion by x+2 to show 3x^4 + 4x^3 - x^2 + 4x - 4 = (x+2)(3x^3 - 2x^2 + 3x - 2) = (x+2)(x^2(3x - 2) + (3x-2)) , grouping =(x+2)(3x-2)(x^2 + 1)
Your question makes no sense If a+bi is your complex number, then its conjugate is a - bi, but they are NOT equal. However, if you want to trivialize it .... the conjugate of a + 0i is a - 0i, and they would be equal since a = a
.9 = 9/10 .09 = 9/100 .009 = 9/1000 etc.
the numerator and the denominator are both divisible by 2, so 6/16 = ...
0.1x + 3 = 1.7 subtract 3 from both sides 0.1x + 3 -3 = 1.7-3 .1x = -1.3 divide both sides by .1 .1x /.1 = -1.3/.1 x = -13 You establish where her error was.
w = km, where w is weight, m is mass and k is a constant given: when w = 54 , m = 6 54 = k(6) k = 9 so w = 9m, so if m = 8, w = ... or, just use a proportion: x/54 = 8/6 x = 54(4/3) = ... same as above
Number accepte = .6(30000) - .. number who actually show up = (.35)(.6)(30000) = ....
- 5 > 4x + 15 -4x > 20 x < -5 , I divided both sides by -4, resulting in the reversal of the inequality sign.
You MUST know the basic shapes of y = sinx and y = cosx You also must know the effects of a and k for y = asin(kx) and y = acos(kx) e.g. y = sin(2x) would have 2 complete periods from 0 to 360°, or a period of 360°/2 = 180° y = 3cosx would have an
Making a sketch will certainly help you to understand the question I will use point B(-7,10) to illustrate reflection over the x-axis: (-7,10) ----> (-7,-10) reflection of this new point over the y-axis: (-7,-10) ----> (7,-10) So in effect the two
Let's put all that information on the x-y grid with the vertex at (0,40) then the top of the towers are at (-300,200) and (300,200) then h = a(x-0)^2 + 40 = ax^2 + 40 but (300,200) also lies on it, so 200 = a(300)^2 + 40 a = 160/90000 = 2/1125 height =
could be 4 green and one red , or, 4 red and 1 green prob(the stated event) = ( C(10,4)*C(10,1) + C(10,4)*C(10,1) )/C(20,5) = .....
exactly 4 students --- 4 students from 24 and then 4 teachers from 16 = C(24,4)*C(16,4) = 10626*1820 = .... at least 2 students = all cases - (exactly no student + exactly 1 student) = C( 40,8) - C(16,8)*C(24,0) - C(16,7)*C(24,1) = ....
in m=yx to "make x the subject" means to solve for x so in yx, the x is multiplied by y, the inverse operation of multiplication is division, so ... I will divide both sides of the equation by y m = yx -----> m/y = yx/y m/y = x
371 ??
I bet that your fingers on a calculator would be more nimble than my 80 years old fingers.
None that I can see
#1, correct #2, your first answer is correct "why wouldn' it be ....." ?? It is, but it would be the long way: √7/√49 = √7/(√7*√7) = 1/√7 , not your √1/7 or 1/7 but 1/√7 = 1/√7 * (√7/√7) = √7/7 , (since √x*√x = x )
umhhh, did you try replacing x with the given numbers? e.g. when x = 1, we get f(1)=-1-6 = -7 mmmhhh, how many of your choices start with -7 ?
volume of wood = (4/3)π(18^3) - (4/3)π(15^3) = ..... The question would be more interesting if there was an opening with some dimension so that you can something in the bowl.
After making your sketch, ..... Let the shadow's length at 60° be x m, let the tower height be h Given: the length of the shadow at 30° = x+20 m so ... tan60 = h/x h = xtan60 and tan 30 = h/(x+20) h = tan30(x+20) then xtan60 = tan30(x+20) xtan60 = xtan30
For each bouquet: Number of lilies --- x number of tulips --- y number of roses --- 2x + 2y , where both x and y are whole numbers then x+y + 2x+2y = 20 3x + 3y = 20 x + y = 20/3
I totally disagree with the previous post. amount still outstanding = 1750 i = .055/12 = .00458333... n = 9 paym = ? paym(1 - 1.00458333...^-9)/.00458333... = 1750 ... paym = $198.93
What is 5 ÷ 4 ??
time between 3:00 pm and 11:00 pm is 8 hours drop in temp =8(2°) = 16° So what is 15° - 16° ??
1 question can be answered in 5 ways 2 questions can be answered in 5*5 or 5^2 ways 3 questions can be answered in 5*5*5 or 5^3 ways .... 10 questions can be answered in ......
If 3 of 12 are defective ----> 9 of the 12 are good Prob(2 drawn are defective) = (3/12)(2/11) = 1/22
mean: add them up, then divide that sum by 11 median: list them from smallest to largest, the number in the middle is the median and more .... ??
They already did all the work for you by giving you the equation, all you have to do it replace the x with 5
Well, the area of a 18 inch by 24 inch paper = 432 square inches, so ....
she has to borrow .8(229000) or $183,200 for Credit Union: i = .034/12 = .0028333... n = 20(12) = 240 paym(1 - 1.0028333..^-240)/.00283333.. = 183200 I get a paym of $1053.10 per month balance after 5 years = 183200(1.00283333)^60 - 1053.10(1.0028333..^60
As long as there is any interest at all involved the interest contained in the 40th payment would be greater than in the 90th payment
Assuming the normally for monthly payments the interest would be compounded monthly i = .052/12 = .0043333... n = 5*12 = 60 200( 1 - 1.0043333...^-60)/.0043333.. = PV PV = $10,546.85
explain what you mean by an "3.75% interest-only loan" Interest loans on mortgages are usually stated as annual rates, compounded monthly, since the common time for the payment period is the month.
Even after doing A, you would not "cross-multiply" numerators and denominators when multiplying two fractions. e.g. (4/7)(3/8) = 12/56 = 3/14 , I multiplied the numerators and the denominators, then reduced to lowest terms Once you become more comfortable
"bisect" means to cut into two equal parts, so 2x-15 = x+8 just solve this trivial equation for x
the way you typed it .... v = 1/3bh then: 3v = bh
The "sliding" down means that you are moving the triangle vertically only So simply subtract 2 from each of the y components of the points. What do you get ?
I consider 4x - 2y = -10 as standard form, of course why not reduce it to 2x - y = -5 slope-yintercept form: y = 2x+5
let x be the larger and y be the smaller (x-y)(x+y) = 212 212 = 2*106 = 4*53 there are no other factors, since 53 is prime 212 = 2* 106 , so the two numbers are 2 apart and have a sum of 106 dividing 106/2 = 53 so how about 54 and 52 x = 54 , y = 52 and
I just googled "Venn Diagrams" and got hundred of pages. Here is one of them: https://www.youtube.com/watch?v=MassxXy8iko
You clearly state that 5000 of the 10,000 have tried both. The you ask what proportion have tried both sandwiches obviously that would be 5000/10000 or 1/2 as a percentage it would be 50%, as a decimal .5 The rest of the data in your question appears to be
A, B, and C are clearly rational numbers In D, if you had somehow showed that the decimals do not end and do not continue in some obvious pattern, then I could tell It is also rational the way you showed it. e.g. 1.73205080757.... I would classify as
The only correct answer is #5 All the others are incorrect, were you just guessing??? Looks like somebody has quite a bit of studying to do.
Let the total amount of juice be x litres. .4x = 2 x = 2/.4 = 5 So of that 5 litres, .6(5) or 3 litres is grape juice and .4(5) or 2 litres is lemon juice. I will let you sort out how to answers your parts of the question
Use this format to write powers: 5^3 to mean 5 raised to the third, etc 5*9 to mean 5 times 9 –3 • (7 + (–3)^2) ÷ 3 follow the order of operations: = –3 • (7 + 9) ÷ 3 = -3*16 ÷ 3 = -48 ÷ 3 = -16
2x + 5 = 41 solve for x
each rotation is 360° 7077/360 = 19.65833... so we have 19 full rotations and .658333.... of a rotation 2197/360 = 6.102.... , not the same decimal 4377/360 = 15.158... , no 4917/360 = 13.658333.. , ahhh, the same decimal 5537/360 = 15.38... , no So it
What is the total number of jellybeans? How many of those are red? reduce that fraction to lowest terms
I couldn't get any larger than 952 x 76 by trial and error
Assuming E lies on DC area of ABCE = (1/2)(15+7)(15) = .....
Start with R = {x|7 ≤ x < 24, x ∊ N} R = {7,8,9,10,....,23} Q = {3,6,9,12,.....} so Q∩R = {9,12,15,18,21} 2 of those are even, so P∩Q∩R = {12,18} now, what is their sum?
Clearly your function is a straight line with a slope of 3 So it has one zero. solve 3x+18 = 0 , etc
2h = 34 divide both sides by 2 to get h
f(x)=x^3/3-4/x = (1/3)x^3 - 4x^-1 f ' (x) = x^2 + 4x^-2 f '' (x) = 2x - 8x^-3 = 2x - 8/x^3 at the point of inflection, f ''(x) = 0 2x - 8/x^3 = 0 2x^4 = 8 x^4 = 4 x = ± √2 if x = √2 , then y = (2√2)/3 - 4/√2 = (-4√2) / 3 two inflections points :
#1. Since the latus rectum is a vertical line, the parabola has a horizontal axis of symmetry and takes the general form y^2 = 4ax, where 4a is the length of the latus rectum. 4a = √((2-2)^2 + (5+3)^2) = 8 a = 2 Also we know that the focus is (2,1) , the
Assuming you meant: (9^log3)logx = log x - 2log^2 x + 4 let logx = k , then you have (9^log3)k = k - 2k^2 + 4 2k^2 + k(9^log3 - 1) - 4 = 0 looks like some calculator work ahead use the quadratic formula where a = 2 , b = 9^log3, and c = -4 to find k

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