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https://web2.0calc.com/questions/i-need-help-with-this-question_18

Ok I did not see your answer. Your answer is wrong. I used bartlebly instead. They got 855.

i got 2sqrt2/8 cis 31pi/18

What answer did you get?

Or better still, show me your working and I will tell you if it is correct.

extracting coeffieceints? 

I really do not know what you are after.  Maybe some info is missing?

but...

\(x^2+bx+(\frac{b}{2})^2=(x+\frac{b}{2})^2\)

What is the greatest possible sum x + y?

Hello Guest!

I only find 8 ordered pairs of integers that satisfy x ^ 2 + y ^ 2 = 6500.

These are:

(10,80) (32,74) (40,70) (56,58) (58,56) (70,40) (74,32) (80,10)

The greatest possible sum x + y is: x + y = 56 + 58 = 114 

or                                                 x + y = 58 + 56 = 114

  !

Ernie paints 1/2 a house per hour

Lizzie paints 1/5 of a house per hour

Together they paint  1/5  +  1/2   =  7/10 of a house in an hour

So that is 10/7   hours per house, and that's 20/7 hours for two houses

1024 is 1 more than 512+256+128+64+32+16+8+4+2+1.

It's helpful to notice that every term is 1 more than all the previous terms combined.

Simplify, and get pq^2

OK, so I would set all the money he has at first as X, our variable.

X - 1/3X - 120 = 2/3X - 120 is what he has after sentence 1

1/3(2/3X-120)-120 = 2/9X - 160 is what he has after sentence 2

1/3(2/9X - 160) -120 = 2/27X - 520/3 is what he has after sentence 3, but since by this time he doesn't have any money left, we can infer than

2/27X - 520/3 = 0, thus 2/27X = 520/3.

Find X to get the answer.

We set all the marbles Fred has as X.

We can infer from the first sentence that: X - (1/4X+34) = 3/4X - 34 marbles is what Fred has after the first sentence

Now, 3/4X - 3/8(3/4x - 34) = 3/4X-9/32X+51/4 = 15/32X+51/4 is what he has after the second sentence

That suggests that 15/32X + 51/4 = 580, which means 15/32X = 2551/4, and find X to get the answer to the question.

Area of rhombus: 6*8 / 2 = 24

side = 5

The smallest common multiples are: 60, 120, 180

Their sum is 360

We can start by seeing Randy + Raul = 177 and Firmino + Raul = 131. Firmino = \(\frac{1}{3}\text{Randy.}\) Raul = 177 - Randy and Raul = 131 - Firmino. Now we have 177 - Randy = 131 - Firmino. Now we can substitute to get 177 - 3(Firmino) = 131 - Firmino, and now 46 = 2 Firmino. Firmino = 23. We can take this and find Raul = 131 - 23 and then Raul = 108. 177 - 108 = 69 cards. Now that Raul = 108 and Randy = 69, we just subtract 69 from 108 to get 39 cards more than Randy.

Hope this helped!

CPhill can help!

https://web2.0calc.com/questions/algebra-problem_44

This is easy if you use coordinates.

Question: the sytem of equations

xy/(x + y) = 1

xz/(x + z) = 2

yz/(y + z) = 3

has exactly one solution. What is x in this solution?

Answer: x = -8.

32% of the students chose Basketball.

Wait how did you get b and c?

(a) See the graph below.

(b) g(x) = 1/3*f(2x + 2).

(c) We stretch the graph horiztonally by a factor of 2, then stretch the graph vertically by a factor of 3, then shift down 2 units.

Lets say Anson spends x dollars each day:

4x = 1/4 of initial amount

16x = initial amount

4x + 6x = 16x - 72

6x = 72

x = 12

so 16x = 16 x 12 = $\boxed{192}$

Lets say she rows x miles in each direction.

When she rows against the current, she travels for $\frac{x}7$ hours.

When she rows with the current, she travels for $\frac{x}{11}$ hours.

In total, she rows $\frac{11x+7x}{77}=\frac{18x}{77}$ hours.

She rows 2x miles in $\frac{18x}{77}$ hours, so the average speed Judy rows is $2x\cdot\frac{77}{18x}=\boxed{\frac{77}{9}}$

14 - 6 = 8

1/2(8) = 4

1/4(8) = 2

Polka dots roofs = 8 - 6  

Hope this helped :)