ceciliaaa95
ceciliaaa95
14-06-2022
Mathematics
contestada
Evaluate -1/2 x² + 3/4 x for x = 4.
Respuesta :
LeviElijah
LeviElijah
14-06-2022
ANSWER:
-5
Solution:
1.Substitute
Substitute x = 4 into [tex] \sf{ - \frac{1}{2} {x}^{2} + \frac{3}{4} \times }[/tex]
[tex] \sf{ - \frac{ {4}^{2} }{2} + 4 \times \frac{3}{4} }[/tex]
2.Calculate
[tex] \sf{ - \frac{16}{2} + 4 \times \frac{3}{4} }[/tex]
Cross out the common factor
[tex] \sf{ - 8 + 4 \times \frac{3}{4} }[/tex]
Cross out common factor
[tex] \sf{ - 8 + 3}[/tex]
Calculate the sum or difference
-5
Hope it helps
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