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postnew [5]
3 years ago
6

Ana has $500 to spend on shopping for her trip. She spends her money on the following: $120 on swimsuits$50 on towels$100 on clo

thes$25 on sunblocky on other expensesEnter an equation to represent the amount of money Ana has left, based on how much she spends on other expenses. Let x represent the amount of money Ana has left, and let y represent how much Ana spends on other expenses.
Mathematics
1 answer:
shtirl [24]3 years ago
4 0
295 she spent
y dollars she can spend on other expanses
then 295+x+y=500
implies x+y=205

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Elanso [62]

Answer:

n=10

Step-by-step explanation:

- 4(2 + 8) = ( - 4 \times n) \\  \frac{ - 4(10)}{ - 4}  =  \frac{ - 4n}{ - 4}  \\ 10 = n

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lisabon 2012 [21]

the q3 is just above the median so

Step-by-step explanation:

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Transform x2 + 6x + 8 = 0 into the form (x − p)2 = q?
liraira [26]
So hmmm x²+6x+8=0

alrite.. let's do some grouping now
( x² + 6x + [?]²) + 8 = 0

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let's take a peek at the middle guy of the trinomial.. 6x.. hmmm let's factor it, 2*3*x, wait a minute!  2 * 3 * x... we already have x² on the left-side, since the middle term is just 2 * the square root of the other two terms, that means that the guy on the right, our missing guy must be "3"

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3 years ago
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3 years ago
Working alone, Henry takes 3 hours less than Mary to clean the carpets in the entire office. Working together, they can clean th
Sati [7]

Answer:

It would take Henry 3 hours to clean the office carpets if Mary were not there to help

Step-by-step explanation:

Assume that it takes Henry t hours to clean the carpets

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∵ Henry takes t hours

- That means add 3 to t to find Mary time

∴ Mary takes t + 3 hours

∵ The rate of Henry is \frac{1}{t}

∵ The rate of Mary is \frac{1}{t+3}

∵ Working together, they can clean the carpets in 2 hours

- Add the two rates and equate the answer by \frac{1}{2} (their rate together)

∴ \frac{1}{t}+\frac{1}{t+3}=\frac{1}{2}

Multiply the two denominators and multiply each numerator by the other denominator to add the two fractions of the left hand side

∵ \frac{(1)(t+3)}{t(t+3)}+\frac{(1)t}{t(t+3)}=\frac{1}{2}

∴  \frac{(t+3)}{t(t+3)}+\frac{t}{t(t+3)}=\frac{1}{2}

- Add the two fractions in the left hand side

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OR

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∴ t = 3

∴ Henry would take 3 hours to clean the carpets alone

It would take Henry 3 hours to clean the office carpets if Mary were not there to help

8 0
3 years ago
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