Simplify the expression -24+2 (y-9)

Mathematics

2 answers:

Gnoma [55]3 years ago

5 0

-42+2y
-24+2(y-9)
-24+2y -18
-24+(-18)=-42
-42+2y

lesya [120]3 years ago

3 0

<span>2(y-9)-24<span>

</span></span><span>2y-18-24</span>
<span><span>2y+(-18-24)</span><span>
</span></span>2y-42 <------Answer or 2(y-21)

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If R= {(1,2), (3,4), (5,6), (8,9)} find the domain and range of R a. Find value of X and Y.

podryga [215]

<h2>The Domain and Range of a Set of Ordered Pairs</h2><h3>Answer:</h3>

Domain: $x \in \{ 1, 3, 5, 8 \}$

Range: $y \in \{ 2, 4, 6, 9 \}$

<h3>Step-by-step explanation:</h3>

We are given the set of ordered pairs: $R$ . The Domain is just the set containing all the $x$ values of each ordered pair of $R$ . Recall that in the ordered pair $(a,b)$ , $a$ is the $x$ value. In set $R$ , we can see that the $x$ values are $\{ 1, 3, 5, 8 \}$ .

For the Range, it is just the set containing all the $y$ values of each ordered pair of $R$ . Recall that in the ordered pair $(a,b)$ , $b$ is the $y$ value. In set $R$ , we can see that the $y$ values are $\{ 2, 4, 6, 9 \}$ .