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Graham
Questions (15)
Find how many digits the base seven number 7^(7^7) has when written in base seven.
1 answer
492 views
How many Sq metres is there in a area of 200cm x195cm x10cm deep?
1 answer
446 views
If the absolute temperature ooh 6 inches cubed of a gas decreases by a factor of 2, what will be the new volume? How do set up
1 answer
416 views
the length of a rectangle L metres and the width of the rectangle is W metres. Each measurement is correct to the nearest cm.
3 answers
520 views
A 2.41 kg ball is attached to a ceiling by a
1.86 m long string. The height of the room is 3.38 m. The acceleration of gravity is
2 answers
701 views
Find the number b such that the line y = b divides the region bounded by the curves y = 4x2 and y = 1 into two regions with
1 answer
1,269 views
A satellite moves in a circular orbit around
the Earth at a speed of 5.3 km/s. Determine the satellite’s altitude above the
1 answer
809 views
I'd like to do a titration test, I've got a sulphuric acid solution @ 1M (2N) but I need one @ 0.12N. How many ml of the 1M (2N)
9 answers
622 views
I had a 1.094g of mystery Alum. "AB(SO4)c. dH2O" (I assume that that the Alum is KAl(SO4)2-12H2O but we don't know A B c or d,
1 answer
634 views
Write the polynomial in simplest form with roots 4, 5i and -5i(multiply it out so no parentheses remain
(x-4)(x+5i)(x-5i)(NOT
1 answer
946 views
I have a question concerning this problem:I just want to make sure my formulas are correct before I do problem
It is a hyperbola
5 answers
1,114 views
Can you tell me how you arrive at the answer to this question: if you multiply meby2, I become a number greater than 20and less
1 answer
506 views
Predict the products and then write the complete balanced chemical equation with states of matter:
1. Sulfuric Acid and sodium
1 answer
662 views
dara spent 25% of his money in one shop , he spent 33 1/3 of the remainder and had £6.80 left , how much had he at first
3 answers
525 views
Hi, I have been asked to simplify the square root of 28 by writing it as a product of an integer and a surd. By practising other
2 answers
528 views
Answers (414)
How do you get x-5y = -20
First, calculate the Mechanical Advantage by using MA = effort / load where effort is 200N (using 200N of effort to pull the cart) and load is 1000N (the cart exerts a force of 1000N on the ramp - the ramps load). 200N / 1000N = 5. Then use the ideal
its a fire poem i couldn't find a better one o
shoutout (: you are my god
It's B
Let's start here: "Write an equation to determine how far she can drive based on the gallons of gas in her car." So when we write an equation, there's usually an independent and dependent variable. In this case, how far she can drive DEPENDS ON the gallons
No, you didn't waste my time, understanding is an important part of learning.
So, J = 4, and we have the equation: s + j = 17 You can solve this by substituting 4 for j in that equation.
So, she has 5.5 pounds and wants to split it into 50 bags. This is a division problem. She wants to divide 5.5 pound into 50 bag: 5.5 / 50 Since this is a fraction as well, she could divide both 5.5 and 50 by 5 (same thing as multiplying by (1/5)/(1/5) or
Do what two recipes? You'll have to be more specific.
First of all, don't start a new post every time you ask, reply to the same original one. I assume you're referring to the problem where I answered: "Sam's age is five years more than twice Jessica's age." So, Sam's age, which I will designate a "s" is 5
Yeah, if it's coefficient, it's definitely "of". Crossword puzzles are really not the best way to understand math concepts anyway.
Well, do you know what a function is? A function is an equation where every input has only one output. In notation, x is the input. So the question is really asking: "Can x equal anything in following equation which will result in multiple y-values?" The
Ok, so we've got: _ _ E _ _ _ _ _ _ T My best guess is "Coefficient", given the context, although that is 11 letters.
No, that is not correct. If you want better help, show whatever work you've done on the problem. That will help me understand where you aren't understanding. And I've already answered this question twice.
If that is the case: Refactor the denominator (bottomm), and you'll get the right answer.
I'm assuming the original equation is: (Z^2 - 8Z + 12) / (Z^2 + Z -6) So, that 8 is actually an 8Z, right?
Ok, so first, n + 2 > 8 can be simplified: n + 2 > 8 n + 2 - 2 > 8 -2 n > 6 and the replacement set for the variable is all one-digit prime numbers To answer that, we have to know the 1 digit prime numbers, which are {2, 3, 5, 7}. So n can equal any of
I already answered this in the previous question, but here it is again: "Sam's age is five years more than twice Jessica's age." So, Sam's age, which I will designate a "s" is 5 years more than twice Jessica's age, which I will designate as "j". From this
"Sam's age is five years more than twice Jessica's age." So, Sam's age, which I will designate a "s" is 5 years more than twice Jessica's age, which I will designate as "j". From this we can realize that twice Jessica's age (2j) plus 5 is equal to Sam's
"8 less than y" What is would you do to y to get 8 less than y? "is 2" Is means equal in this context. So, 8 less than y = 2
The assignment sounds like two stories: the headline article, which would be on the front page in a real newspaper, and the international article, which could fill up other space that the headline article doesn't fill up, and perhaps continue onto another
So, you know the values of a, b, and c. You have an expression with the variables a, b, and c. Because you know what each variable equals, you can substitute each number for its respective variable. The expression is: a - b + c = And, a = -2 (-2) - b + c =
That should be right, as long as the first term is "2st^2" and not "(2st)^2".
Let the folders cost f. Let the rulers cost r. Sarah paid: 8f + 3r Lea paid: 8r + 3f Sarah paid 1.25 more than Lea. 8f + 3r = 1.25 + 8r + 3f 5f = 1.25 + 5r f = 0.25 + r The rulers cost: r = 0.45 .: f = 0.70 Each folder costs 70 cents. Check. 8*(0.70) +
f(x) is continuous over the domain. [-3,3] f(x) is differential. f'(x) = 3x2 -9 f(x) has two equal value points on the independent axis. f(-3) = f(3) = 0 Therefore Rolle's Theorem Applies .: Exists c such that f'(c)=0 Solve for c: 0 = 3c2 - 9 ...
Redistribute for like terms. = (8+8)m3+(-3+3)m2+(1-4)m+(-5-2) = ...
Again, use Pythagorus. d2 = 152 + 152 d = 15√2
Use Pythagorus. 122 = 22 + h2
The centre of gravity is the point around which the weighted distribution of mass of the body sums to zero. Its relative placement within the body is independent of the orientation of the whole body; though of course it is affected by redistribution of
Use: E = hc/λ Where: Planck Constant: h = 6.62606957(29)×10−34J∙s Speed of Light: c = 2.99792458×10+9m∙s-1 Wavelength: λ = 0.130m
a) S'(t) = dS(t)/dt S'(t) = ((d5t/dt)(t2+1) - 5t d(t2+1)/dt)/(t2+1)2 S'(t) = (5(t2+1) - 10t2)/(t2+1)2 S'(t) = (5-5t2)/(t4+2t2+1)
m1 × 3.10m/s2 = m2 × 2.00m/s2 m2 = 1.55 × m1
Use V = m / (w c) Where: V : volume m : mass w : molecular mass c : concentration
Don't forget the constants of integration. ------------- A = ∫ √(a2-x2) dx Let x = a sin(θ) dx = a cos(θ) dθ A = ∫ a2cos(θ)√(1-sin2(θ)) dθ A = ∫ a2cos2(θ) dθ A = (a2/2) ∫ (cos(2θ)+1) dθ A = (a2/2)(sin(2θ)/2 + θ) + C1 A =
(B) You have two simultaneous equations in two variables. The original equation, and the derivative for specified values of dy/dx. When dy/dx=1/2 : 1/2 = y/(2y-x) Rearrange: 2y - x = 2y Hence: x = 0 Substitute back into y2 = 2 + xy: Therefore: y = ±√2
I cannot see the diagram, so I am going to assume the new fencing is formed into an 'E' shape, with the opening pressed up against the existing fence line. That is: one long side (l), two short sides and the divider (3w). The fence length is: 800 = 3w + l
The 200m fencing is used for two length-sides (l), two width-sides (w) and the middle divider (w). This: 200 = 2l + 3w
Compare to the tossing two coins. P(Head ∩ Head) = P(Head) × P(Head) = 1/4 P(Head ∩ Tail) = 2 × P(Head) × P(Tail) = 1/2 P(Tail ∩ Tail) = P(Tail) × P(Tail) = 1/4 (Note that there are two ways to toss a head and a tail.) The formation of hydrogen
Which of what following? ... And what do you think is the right one?
Hint: The first sequence is: 1/(1+1), 2/(2+1), 3/(3+1), 4/(4+1)
Three consecutive even integers are: 2n, 2n+2, 2n+4, where n is an integer. The rule is thus: 2(2n+4)/2n = (3/5)(2n+2) - 3 Rearranging gives: 0 = 6 n2 - 19n - 20 Find the integer root(s) of this quadratic. Solve for integer n. Use n to find the three
y = 7x + 21 a = 7*8 + 21
Let N = a.bcd c = d+3 -> 3 ≤ c ≤ 9 b = c-2 -> 1 ≤ b ≤ 7 a = b+c a = 2c-2 -> 4 ≤ a ≤ 8 c = (a+2)/2 -> 3 ≤ c ≤ 5 .: c = 3, N= 4.130... c = 4, N= 6.241... c = 5, N= 8.352... Though of course the rules only fix the first four significant
Hint: the sequence is: 21,22,23,24,25,...
The events are independent. Use: P(Ki ∩ ♥) = P(Ki)×P(♥)
There are 52 cards in the deck; 13 in each of the four suits, and two of the suits are red. The four face cards in each suit are: jack, queen, king, and ace. P(face card) = 4/13 P(red) = 1/4 The events are independent. The probability of an intersection of
No. The probability of the first die rolling a 2 is 1/6. The probability of the second die rolling a 3 is 1/6. The combined probability is 1/36.
Opps. Cut and paste error. 2 Ca + Cr2O72- + 14 H+ = 2 Ca2+ + 2 Cr3+ + 7 H2O
In acidic aqueous solution you use water to balance oxygen and hydrogen cations to balance hydrogen. Ca = Ca{2+} + 2 ē Cr2O7{2-} + 14 H{+} + 6 ē = 2 Cr{3+} + 7 H2O ===================================================== 3 Ca + Cr2O7{2-} + 14 H{+} = 3
