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tamaranim1 [39]
2 years ago
8

Please help me [Below is the graph of equation y=|x+2|-1. Use this graph to find all values of x such that y<0] IF YOU PUT A

LINK OR UNHELPFUL ANSWER I WILL REPORT YOU, I GIVE BRAINLIEST

Mathematics
1 answer:
Alchen [17]2 years ago
3 0

Answer:

x ∈ (-3, -1)

Step-by-step explanation:

In the graph, the vertical axis represents the y-value, while the horizontal axis represents the x-value.

y < 0 (y smaller than zero) happens in the region where the graph is below the horizontal axis.

Only by looking at the graph, we can see that y < 0 (the graph is below the horizontal axis) for the values of x in the interval (-3, -1)

Then all the values of x such that y < 0 are:

x ∈ (-3, -1)

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By law of cosines,

{a}^{2}  =  {b}^{2}  +  {c}^{2}   - 2 \times b \times c \times cos(100) \\  {x}^{2}  =  {13}^{2}  +  {10}^{2}  - (2 \times 13 \times 10 \times cos100) \\  = 169 + 100 - 260 \times 0.862 \\  = 269 - 260 \times 0.862 \\  = 7.758 \\x =  \sqrt{7.758 }  \\  = 2.785 \\  = approx \: 2.8

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