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Marina86 [1]
4 years ago
10

justine has two jobs. she earns $25 a week from her paper route and $30 a week from babysitting. how much money did she earn fro

m babysitting if she earned $220 last month?
Mathematics
2 answers:
Lady bird [3.3K]4 years ago
8 0
Since she earns 25 a week from her paper route and there 4 week in a month we subtract 100 from 220 which leaves us with $120
Fofino [41]4 years ago
7 0
To solve this problem all we need to do is find 6/11 (30/55) of 220. The reason for this is because 30+25 is her total weekly income. Therefore, 30/55 will the amount for babysitting. The answer you will get is $120. We get this by multiplying 120 by 6/11.
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Answer:

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Step-by-step explanation:

Given:

The expression is given as:

2^{x-6}+2^{x}

The equivalent expression to the above expression is given as:

A\cdot 2^{x}

Now, simplifying the original expression using the law of indices:

a^{m-n}=\frac{a^m}{a^n}

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Now, 2^x is a common factor to both the terms, so we factor it out. This gives,

=2^x(\dfrac{1}{2^6}+1)\\\\=2^x(\frac{1}{64}+1)\\\\=2^x(\frac{1}{64}+\frac{64}{64})\\\\=2^x(\frac{1+64}{64})\\\\=2^x(\frac{65}{64})\\\\=(\frac{65}{64})\cdot 2^x

Now, on comparing the simplified form with the equivalent expression, we conclude:

A\cdot2^x=(\frac{65}{64})\cdot 2^x\\\\A=\frac{65}{64}\ or\ 1.015625

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irga5000 [103]

Answer:

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Step-by-step explanation:

Let d = price of one DVD, and let v = price of 1 video game.

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v + 2d = 49.5

We have two equations in two unknowns, so we can solve them as a system of 2 equations.

2v + 3d = 89

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Rewrite the first equation.

Multiply both sides of the second equation by -2 and write it below the first equation.

Add the equations.

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Now we substitute 10 for d in the second original equation and solve for v.

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