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son4ous [18]
3 years ago
8

Solving the systems of equations by elimination-solo team teach x+y=-7 3x+y=-9

Mathematics
1 answer:
maria [59]3 years ago
7 0

Answer: x= -1, y= -6

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you made a batch of 24 cookies for school your brother ate 7 of them without asking you. What fraction of your cookies are left?
polet [3.4K]
17/24.

Explanation:
24/24 is your original amount.
24 - 7 = 17.
So now you have 17/24! :D
4 0
3 years ago
Correct answer get the BRAINLIEST ANSWER!
OLga [1]
Here is how I completed the problem:

I started by creating a ratio:

\frac{x}{0.18} + \frac{360}{0.10} = \frac{x+360}{0.15}

<em>Where 'x' is the desired amount of the 18% solution of sulfuric acid. 

</em>From here, I solved for 'x':
<em>
</em>\frac{0.10x}{0.018} + \frac{360(0.18)}{0.018} = \frac{x+360}{0.15}
\frac{0.10x}{0.018} + \frac{64.8}{0.018} = \frac{x+360}{0.15}
\frac{0.10x+64.8}{0.018} = \frac{x+360}{0.15}
0.15(0.10x+64.8) = 0.018(x+360)
0.015x+9.72 = 0.018x+6.48
0.003x = 3.24
x = 1080

∴You will need to add 1080ml of 18% Sulfuric Acid in order to obtain a 15% solution.
8 0
3 years ago
Which function represents the cost of a pizza with n Toppings
alukav5142 [94]

Correct answer is B... You can plug in values for n.  Plug in 1 for n and the out put is 12.  Plug in 2 for n and the output is 13.5

7 0
3 years ago
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Mariah was playing a game where she gets a point if her spinner lands on a multiple of 3. What is the probability that she will
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Answer:

She has a 67% chance of getting anything other than a multiple of 3.

Step-by-step explanation:

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3 years ago
How many variables are in this equation:<br> 2y + 5 = 5n
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There are 2 variables in the equation. The variables are y and n

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3 years ago
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