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Lemur [1.5K]
3 years ago
14

If h(x) = 5x – 3 and j(x) = -2x, solve h[j(2)]

Mathematics
1 answer:
Yuki888 [10]3 years ago
5 0

Answer:

-23

Step-by-step explanation:

j(2) = -2(2)

j(2) = -4

h(-4) = 5(-4) -3

h(-4) =-23

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If 0.9x-1.3=-3.1, what is the value of x-0.8?
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−<span>2.8
</span>Okay so "0.9x-1.3=-3.1" x=-2
 
<span><span><span>0.9x</span>−1.3</span>=<span>−3.1

</span></span>add 1.3 to both sides

<span><span><span><span>0.9x</span>−1.3</span>+1.3</span>=<span><span>−3.1</span>+1.3

</span></span><span><span>0.9x</span>=<span>−1.8

</span></span>divide both sides by 0.9

<span><span><span>0.9x/</span>0.9</span>=<span><span>−1.8/</span><span>0.9

</span></span></span>x=<span>−2</span>

So if you plug in -2 into "x-0.8" you get −2.8

<span>=<span><span>−2</span>−0.8

</span></span><span>=<span><span>−2-</span><span>0.8

</span></span></span><span>=<span>−2.8

</span></span>Hope this helps. 
3 0
3 years ago
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