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3 years ago

Please help: The solution to which inequality is shown? A. y + 5 > –2 B. y + 5 ≥ –2 C. y + 5 < –2 D. y + 5 ≤ –2

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

8 0

You see that the first circle is between -10 and -5. This means that part of the inequality must be between these two values. In addition, the open circle means that the inequality is either less than or greater than, but not equal to. This rules out both B and D. Since the arrow is pointing to the right, this means that the inequality is greater than. Now let's look for the inequality with a value greater than a value between -10 and -5.

A.
y+5>-2
y>-7

C.
y+5<-2
y<-7

The one with greater than is A so that is your answer.

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sergiy2304 [10]

This is an exercise on Thermometric scales.

We have as data:

T = 220 °C
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We apply the following formula:

$\large\displaystyle\text{$\begin{gathered}\sf ^{\circ}F=\frac{9}{5}\ ^{\circ}C+32 \end{gathered}$}$

We substitute data in the formula:

$\large\displaystyle\text{$\begin{gathered}\sf ^{\circ}F=\frac{9}{5}\times220+32 \end{gathered}$}$

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$\large\displaystyle\text{$\begin{gathered}\sf =396+32 \ \ \to \ \ [Add] \end{gathered}$}$

$\boxed{\large\displaystyle\text{$\begin{gathered}\sf =428 \ ^{\circ}F \end{gathered}$}}$

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2 years ago

What are all the potential rational roots of f(x)=15x^11 -6x^8 +x^3-4x+3

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So, our choices for $p$ are $\pm 1, \pm 3$ , while our choices for $q$ are $\pm 1, \pm 3, \pm 5, \pm 15$ .

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4 years ago