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Anna71 [15]
4 years ago
12

Solve the inequality

Mathematics
1 answer:
Lana71 [14]4 years ago
7 0
3x-12>15
3x>15+12
3x÷3>27÷3
x>9
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Sec s = 1.6948
Anastaziya [24]
That'd be true only if the value of "s" is the exact same one for both
namely  if sec(s) = cos(s)
then solving for "s"
thus

\bf sec(s)=cos(s)\qquad but\implies sec(\theta)=\cfrac{1}{cos(\theta)}
\\\\\\
thus\cfrac{1}{cos(s)}=cos(s)\implies 1=cos^2(s)\implies \pm \sqrt{1}=cos(s)
\\\\\\
\pm 1=cos(s)\impliedby \textit{now taking }cos^{-1}\textit{ to both sides}
\\\\\\
cos^{-1}(\pm 1)=cos^{-1}[cos(s)]\implies cos^{-1}(\pm 1)=\measuredangle s
5 0
3 years ago
Please help me with this question!
gavmur [86]
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on

now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%

anyway   thus

\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{first sol'n}&11&x&11x\\
\textit{second sol'n}&4&0.55&2.20\\
------&-----&-------&-------\\
mixture&y&0.77&0.77y
\end{array}\\\\
-------------------------------\\\\
\begin{cases}
11+4=y\implies 15=\boxed{y}\\
11x+2.2=0.77y\\
----------\\
11x+2.2=0.77\cdot \boxed{15}
\end{cases}

solve for "x"
6 0
4 years ago
Please help. I need to get too 80%
anyanavicka [17]

Answer:

\frac{3}{500}

Step-by-step explanation:

Start by converting 5 meters to centimeters. Note 1 meter = 100 centimeters.

We can set up a unit converter:

5m(\frac{100cm}{1m})

The meters cancel out leaving us with:

5*100cm=500cm

The scale factor is:

\frac{drawing}{real\ life}=\frac{3cm}{500cm}=\frac{3}{500}

3 0
2 years ago
Identify the slope and y-intercept of the line with the given equation:
miv72 [106K]
1) (solve for Y 1st)
-4y=16
y=-4
slope=0        y-inter= -4

2)(solve for X 1st)
6x=12
x=2
slope=undefined     y-inter= none
3 0
3 years ago
Read 2 more answers
Simplify the problem 2/3 * 3/5
Yakvenalex [24]
The answer the this problem can be either 6/15 or 2/5
3 0
3 years ago
Read 2 more answers
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