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tekilochka [14]
3 years ago
9

Hayley has $155 in savings, and her brother Hank has $230. Hayley is saving $10 each week, and her brother is spending $15 each

week. After how many weeks will their savings accounts have the same amount of money in them?
What is the best way to set up this word problem to solve?


15x+155=230+10x
15 x plus 155 is equal to 230 plus 10 x

155−15x=10x+230
155 minus 15 x is equal to 10 x plus 230

155+10x=230−15x
155 plus 10 x is equal to 230 minus 15 x

155−10x=230+15x

Please I need I will Brainliest!!!
Mathematics
2 answers:
Afina-wow [57]3 years ago
7 0

Answer:

The Correct Answer is The 3rd one, Or C

Step-by-step explanation:

It will take 3 weeks

If its right mark me brainliest if its wrong report me.

iris [78.8K]3 years ago
5 0

Answer:

$155+$10x=$230-$15x

Step-by-step explanation:

weeks= x

$155+$10x=$230-$15x is the correct answer because hayley currently has $155 in her saving and you have to add the 10 dollars she saves each week which is 10x. On the other hand, her brother has $230 and spends $15 dollars every week so that is 15x.

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Answer:

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8 0
3 years ago
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An inlet pipe on a swimming pool can be used to fill the pool in 40 hours. The drain pipe can be used to empty the pool in 42 ho
statuscvo [17]

Answer:

Pool will be filled in 280 hours

Step-by-step explanation:

Inlet pipe fills in  40 hours = 1 pool

Inlet pipe fills in 1 hours = \frac{1}{40}

Drain pipe empty in 42 hours = 1 pool

Drain pipe empty in 1 hour =  \frac{1}{42}

If both pipes are opened together

 then in pool fills in 1 hour =  \frac{1}{40} -  \frac{1}{42}

      on simplifying the right side ,we get  \frac{42-40}{(40)(42)}

                                                                 =      \frac{2}{(40)(42)}

                                                                 =     \frac{1}{840}

      \frac{1}{840}  pool fills in 1 hour

                       1 pool will be filled in 840 hours

    \frac{2}{3}     pool is filled

empty pool =  1 - \frac{2}{3} =  \frac{1}{3}

therfore  \frac{1}{3} pool will be filled in     \frac{1}{3}X 840 =

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6 0
3 years ago
A. 20*<br><br> B. 25*<br><br> C. 45*<br><br> D.30*
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D. 30* Because This is definitely smaller than a 45 degree angle. If it was a bit wider it would be.

6 0
4 years ago
what is the difference in the areas of a circle with radius 14 ft and a circle wit radius 10 ft? round your answer to the neares
Delicious77 [7]
A = pi * r^2

radius 14 ft
A = 3.14 * 14^2
A = 3.14 * 196
A = 615.44...rounds to 615

radius 10 ft
A = 3.14 * 10^2
A = 3.14 * 100
A = 314

difference is : 615 - 314 = 301...I guess it is C...because of the rounding
3 0
3 years ago
Using the Elimination method Solve the system:x+y-z=143x+2y+4z=17-x+5y+z=8
lilavasa [31]

Given the system of equations:

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Add the equations 1 and 3

so,

x + y - z + ( -x + 5y + z ) = 4 + 8

x + y - z - x + 5y + z = 12

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Substitute with y at eq. (1)

So,

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Add the last two equations

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So,

x = 3 , y = 2 and z = 1

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