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faltersainse [42]
2 years ago
15

А

Mathematics
1 answer:
notsponge [240]2 years ago
3 0

Answer:

∠1=140

Step-by-step explanation:

∠1=∠3 ( corresponding angles)

20x+60=30x+20

-20x+30x=60-20

10x=40

x=4

∠1=20x+60=20(4)+60=140

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6) z = (te^{6t}+e^{5t})^7

Differentiating w. r. t. t,

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