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drek231 [11]
2 years ago
12

Whitney needed to earn $400 to buy a ticket to a concert. If she earns $15 an hour babysitting, how many hours does she need to

babysit to earn enough to buy a ticket.
Mathematics
1 answer:
MrMuchimi2 years ago
4 0

Answer:

Shes needs to work 26.67 hours

Step-by-step explanation:

In order to find the amount of time she needs to work, we need to divide the total by the rate that she earns money at. She needs a total of $400 and she gets 15 every hour.

400/15=26.67

Shes needs to work 26.67 hours

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Tatiana [17]
Ok so for starters you want to choose an equation and solve for a variable.
So, I am going to choose x from the first equation.
Add y to both sides and you get x=11+y
Next, substitute 11+y for x in the other equation so you get...
2(11+y) +10y=-6
Next distribute the 2 throug the 11 and the y
22+2y+10y=-6
12y=-28
y=-28/12
reduce this fraction to make this easier.
y=-7/3
Now plug in why to either of the equations to find x
x-(-7/3)=11
x+7/3=11
x=11-(7/3)
x=(33/3)-(7/3)
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so x = 26/3 and y = -7/3
you can also check to see if this is correct by substituting each of these values into the equations.
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2 years ago
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damaskus [11]

Answer: x=3/5

Step-by-step explanation:

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2 years ago
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yKpoI14uk [10]

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Step-by-step explanation:

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2 years ago
What is the length of CD ? In this diagram ABC EDC ?<br> Please help !!!!
n200080 [17]
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Explanation:
We are given that the two triangles are similar. This means that we can set the similarity proportionality as follows:
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W e have:
BC = 20 - x
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Substitute in the above proportionality and solve for x as follows:
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Based on he above:
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Answer:

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