Ответ:
90.
[tex] {2}^{x} \times {5}^{x} = 0.01[/tex]
[tex] {(2 \times 5)}^{x} = {10}^{ - 2} [/tex]
[tex] {10}^{x} = {10}^{ - 2} [/tex]
[tex] x = - 2[/tex]
91.
вектор AB={B_x-A_x;B_y-A_y;B_z-A_z}={15-(-7);-3-(-9);-9-13}={22;6;-22}
ответ:вектор AB={22;6;-22}
AB(22;6;-22)
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Answers & Comments
Ответ:
90.
[tex] {2}^{x} \times {5}^{x} = 0.01[/tex]
[tex] {(2 \times 5)}^{x} = {10}^{ - 2} [/tex]
[tex] {10}^{x} = {10}^{ - 2} [/tex]
[tex] x = - 2[/tex]
91.
вектор AB={B_x-A_x;B_y-A_y;B_z-A_z}={15-(-7);-3-(-9);-9-13}={22;6;-22}
ответ:вектор AB={22;6;-22}
AB(22;6;-22)