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LekaFEV [45]
3 years ago
8

!!!!!!!!!!!!!!!!!!!WHEN DO YOU FLIP SIGNS IN INEQUALITIES????????????

Mathematics
2 answers:
RSB [31]3 years ago
8 0
Here is some rules that can help: if a >= b then
a - b >= 0 (subtracting b from both sides)
and -b >= -a (subtracting a from both sides) so that
 -a <= -b (rewriting the inequality in reverse)
 This shows that when you multiply an inequality by -1 (which is part of what you do when you divide by a negative number), you reverse the inequality. <span>
</span>
Oksanka [162]3 years ago
4 0
Whenever u multiply or divide an inequality by a negative number u must flip the inequality sign <span />
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If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
Leokris [45]

Answer: The value of y is 39.6 when x = 11 and the required expression is y(11) = 39.6

Step-by-step explanation:

Since we have given that

y varies directly as x.

If y = 18, when x = 5.

So, we need to find the value of y when x is 11.

According to question, we get that

\dfrac{y}{x}=\dfrac{18}{5}=\dfrac{y}{11}\\\\18\times 11=5y\\\\198=5y\\\\\dfrac{198}{5}=y\\\\y=39.6

Hence, the value of y is 39.6 when x = 11 and the required expression is y(11) = 39.6

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3 years ago
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3 years ago
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a school district requires all graduating seniors to take a mathematics test. This year, the rest scores were approximately norm
Klio2033 [76]
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