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iren2701 [21]
3 years ago
9

Y=1−2x;x=9 can you please help

Mathematics
2 answers:
olchik [2.2K]3 years ago
8 0
Y = 1 - 2x
y = 1 - 2(9)
y = 1 - 18
y = -17

The answer is -17
Anit [1.1K]3 years ago
7 0

Answer:

17

Step-by-step explanation:

since you are given that x is 9 all you have to do is plug it in. So 1-2(9) 2 times 9 is 18 so 1-18=17

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How much of a spice that is 30% salt should be added to 175 ounces of a spice that is 65% salt in order to make a spice that is
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\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{30\% spice}&x&0.30&0.30x\\
\textit{65\% spice}&175&0.65&(175)(0.65)\\
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\end{array}

so.. as you can see, we use the decimal notation for the percentages... 65% is just 65/100 and 50% is just 50/100 and so on

so.. whatever the salted amounts are, we know they'll add up to (x+175)(0.50)

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3 years ago
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Nookie1986 [14]

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3 years ago
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4 0
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x ∉ R

3 0
3 years ago
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