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a_sh-v [17]
2 years ago
12

How do I graph an inequality in one variable?

Mathematics
1 answer:
Masja [62]2 years ago
7 0
It depends on the variable.

If it's something like x < 2, your graph would be a vertical line at x = 2, and everything to left of that line shaded in (because of the less than).

Similarly for y, except it would be a horizontal line with either everything above or below shaded.

You can have other equations like 0<x<4 where everything between x = 0 and x = 4 would be shaded
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The difference of two number is 3. Their sum is 13.<br> Find the numbers.
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8 and 5

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Jackie's restaurant bill was $23. 50, and the tax was 8%. Jackie left a 20% tip on the post-tax bill. How much was the tip Jacki
Ksju [112]

well, the subtotal or pre-tax bill is $23.50, now let's add the 8% tax and

\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{8\% of 23.50}}{\left( \cfrac{8}{100} \right)23.50}\implies 1.88

so the post-tax bill is 23.50 + 1.88 = 25.38, and Jackie's tip is 20% of that

\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{20\% of 25.38}}{\left( \cfrac{20}{100} \right)25.38}\implies 5.076\qquad \approx 5.08

6 0
1 year ago
Use mental math to find a solution for 2/8= 3/x+2
asambeis [7]

Answer:

2/3 + 3/5 = 19

15

= 14

15

≅ 1.266667

Step-by-step explanation:

Add: 2

3

+ 3

5

= 2 · 5

3 · 5

+ 3 · 3

5 · 3

= 10

15

+ 9

15

= 10 + 9

15

= 19

15


8 0
3 years ago
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