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neonofarm [45]
3 years ago
14

Need help please please someone help me

Mathematics
2 answers:
Elanso [62]3 years ago
6 0
///The answer is -188///
Helen [10]3 years ago
3 0

Answer: 11.4


Step-by-step explanation:

Okay so we are going to use PEMDAS,

So first we multiply 2 times 5 first and get 10

(9-84 divided by 10 + 5+6)+2

(9-8.4+5+6)+2

( 9- 8.4 + 11) +2

( -1.6 + 11) +2

9.4 + 2

11.4



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What is the equivalent of π/6 radians in degrees. Question and answers are in photo above
Karolina [17]

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radians degrees

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3 0
4 years ago
What’s the answer for number 7????????????
kodGreya [7K]

Choice C, because

\frac{3}{4}  =  \frac{6}{8}

So it's less than what she originally had (which isn't possible)

6 0
3 years ago
A chemist wants to make 100 liters of a 44% acid solution. She has solutions that are 20% acid and 60% acid.
alexgriva [62]

the first solution is 20% acid, and say we'll be using "x" liters, so how many liters of just acid are in it?  well 20% of "x" or namely 0.2x.  Likewise for the 60% acid solution, if we had "y" liters of it, the amount of only acid in it is 0.6y.

\begin{array}{lcccl} &\stackrel{solution}{quantity}&\stackrel{\textit{\% of }}{amount}&\stackrel{\textit{liters of }}{amount}\\ \cline{2-4}&\\ \textit{1st solution}&x&0.20&0.2x\\ \textit{2nd solution}&y&0.60&0.6y\\ \cline{2-4}&\\ mixture&100&0.44&44 \end{array}~\hfill \begin{cases} x+y=100\\\\ 0.2x+0.6y=44 \end{cases}

x+y=100\implies y=100-x~\hfill \stackrel{\textit{substituting on the 2nd equation}}{0.2x+0.6(100-x)=44} \\\\\\ 0.2x+60-0.6x=44\implies -0.4x+60=44\implies -0.4x=-16 \\\\\\ x=\cfrac{-16}{-0.4}\implies \boxed{x=40}~\hfill \boxed{\stackrel{100-40}{y=60}}

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2 years ago
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Lorico [155]

If the shape on the red image is scaled to the shape on the blue image, the scale factor is 0.2777.

Explanation:

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5 0
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